Parts Catalog

0-235 Series 

Parts Catalog

P- 

RARTs CATALGG 

RC-30;R 

AVCO LYCOI\IIINO 

0-935 SERIE8 

AIRCRAFT ENGINES 

9 

e~-´• 

LL 

f 

c- 

IIIII 

r- 

c 

PRICE ~18.00 JUNE 1982 

~AVCO LYCOMING WILLIAMSPORT DIVISIOI\I 

652 Oliver Street, Williamsport, Pennsylvania 17701 

LYCOMING ENGINE GROUP

RECORD OF REVISIONS 

0-235 Series 

MFG REV 

NO DESCRIPTION ISSUEDATE ATPREVDATE INSERTEDBY 

Reissue 6/1 982 12/1211984 ATPNMR 

A IPages 1-5, 1-6 211 984 4/111 987 ATP/AB 

B IPages 2-13, 3-1, 3-2 111987 4/1/1987 ATP/AB 

Change Notice 288 121911991 1/2011992 ATP/GM

RECORD OF TEMPORARY REVISIONS 

ATP REV 1 INSERT II DATE I REV REMOVE 

REV NO DESCRIPTION ISSUE DATE DATE BY II REMOVED I INCOR BY

L~AVCO LYCOMING WILLIAMSPORT DIVISION 

652 Oliver Street, Williamsport, 

~7AVCO LYCOMING ENGINE GROUP 

TECHNICAL 

PUBLICATION REVISION 

;mEYISION No. ENGINE MODEL PUBLICATION No. PUBLICATION DATE 

PC-302B 0-235 SerFes PC-302 June, 1982 

The page(s) furnished herewith are int~nded to replace the corresponding 

pagels) of the publication indicated above. 

Remove I Insert 

June, 1982 January, 1987 

2-13, 3-1, 3-2 2-13, 3-1, 3-2

~7AVCO LYCOMING VVILLIAMSPORT DIVISION 

652 Oliver Street, Williamsport, Pennsylvania 17701 

~AVCO LYCOMING ENGINE GROUP 

TECHNICAL 

PUBLICATION REVISION 

REVISION No. ENGINE MODEL PUBLICATION No. PUBLICATION DATE 

PC1302A 0-235 Seuies PC-302 June, 1982 

The page(s) furnished herewith are intended to replace the corresponding 

page(s) of the publication indicated above. 

Remove 

Insert 

PC-302A February, 1984 

Page 1-5 

Propeller flange bushings 

clarification. 

Page 1-6 

Propeller flange bushings 

added.

nnl~:l Lyromlng 

mtllnnepert Ptemt 

652 Oliver Street 

.Textron LycominglSubsidiary of Textron Inc. Williamspoct, PA 17701 U.S.A. 

717/323-6181 

Parts and Price Change Notification 

CHANGE NOTICE: 288 December 9, 1991 

MODELS AFFECTED: 

0-235 8erias 

CHANGE 

DESCRIPTION: 

When it becomes necessary to replace all of the piston 

p~n/piston pin plugs on all applicable 235 series 

engines. 

INTERCHANGEABILITY: 

Use 

Instead of 

LW-13445 Piston Pin 60827 

LW-11625 Piston Pin Plug 60828 

NOTE: Piston pin and piston pin plugs must be 

installed in complete engine sets. 

NOTE: 60827 piston pin will be maintained for a 

limited time for individual replacement.

~ATVCO LYCONI ING 0-235 SERIES PARTS CATALOG 

INTRODUCTION 

NOTE 

This Parts Catalog supersedes PC-102 dated August, 1973 and PC-202 dated March, 1978. 

This illustrated parts catalog contains a complete parts listing for the Avco Lycoming 0-235 

series aircraft engines. For use in expediting of parts when ordering, the serial number and model 

designation are stamped on the engine nameplate located on the oil sump. 

The Group Assembly Section lists major assemblies and sub-assemblies in general sequence of 

engine build-up. The "Quantity Per Assembly" column indicates the number required at that 

particular location only and is not to be construed to mean quantity for the complete engine. 

When the symbol "un" is listed, it means to use quanitity as necessary. 

The Service Kit Section provides listings for seal and gasket sets and cylinder, piston and ring 

assemblies for use in ordering parts as necessary during overhaul. 

j 

i 

The Numerical Index is provided for convenience in finding parts when only the part number is 

known. 

In the Oversize and Undersize Parts section, procurable oversize and undersize parts are listed 

preceding the main group assembly parts list. 

Parts coverage of Vendor Accessories used on Avco Lycoming engines may be found in the appropriate 

Vendor’s Parts Catalog. A list of the publications appear in the latest edition of Avco 

Lycoming Service Letter No. L114. 

SERVICE BULLETINS, INSTRUCTIONS AND LETTERS 

Although the information contained in this parts catalog is up-to-date at time of publication, 

users are urged to keep abreast of later information through all Avco Lycoming distributors or 

from the factory by subscription. Consult the latest edition of Service Letter No. L114 for 

subscription information. 

NOTE 

The illustrations shown in this publication are typical of the subject matter they portray; in no 

instance are they to be interpreted as examples of any specific engines, equipment or part 

thereof. 

Any reference in this document to a supplierslparts manufacturers’ product, by name, 

trademark, part number or other description is solely for the purposes of identification and does 

not indicate or infer that Avco Lycoming accepts responsibility for quality control andlor airworthiness 

of parts which do not pass through the Avco Lycoming quality control system. 

C

Introduction 

........._____ 

~I/AVCO LYCOMING 

0-235 SERIES PARTS CATALOG 

0-235 SERIES 

TABLE OF CONTENTS 

SECTION 

PAGE 

Table of Contents 

.........____, 

Oversizeand Undersize Parts List. 

........._____ 

.........__ 

.iii 

1. CRANKCASE, CRANKSHAFT AND CAMSHAFT GROUP 

Crankcase .1-1 

Oil Level Gage Assemblies. 

................._ 1.3 

Crankshaft, Camshaftand Related Parts. 

................._ 

CrankcaseRelated Parts. .1-7 

Crankshaft Idler Gears and Tachometer Drive.............. 1.9 

Crankcase Attaching Parts ~1-11 

2. ACCESSORY HOUSING AND RELATED PARTS 

Accessory HousingAssembly. ..2-1 

Oil Pump Assembly and Accessory Housing Attaching Parts............ 2.3 

Propeller Governor Oil Line............... 2.5 

Propeller Governor Drive and Cover ......2-7 

Fuel Pump Assembly and Attaching Parts 2-9 

Vacuum Pump’ Drive and Cover. ~2-11 

Oil Filter Assembly andOil Cooler Bypass Valve. .2-13 

3. CYLINDER, PISTON AND VALVE TRAIN 

Connecting Rod, Piston and Ring Assemblies 

Cylinder Assembly 3-3 

Cylinder Related Parts 

~3.5 

Valve Assembly 

Cylinder Head Drain Tubes and Intercylinder Cooling Baffles 3.9 

4. IGNITION SYSTEM 

Magnetos and Magneto Drives. 

Magnetos and Magneto Drives 

.4-3 

Ignition Harness and Lead Assembly (Slick) 4.5 

Spark Plugs 

4-7 

5. ELECTRICAL COMPONENTS 

Voltage Regulators, Relay, Alternator and Generator Drive Belts...... 5-1 

Generator Mountingand Attaching Parts 

.........___ 

5.3 

Alternator Mounting and Attaching Parts....... 5-5 

Generator and Alternator Assemblies...... 

5~7 

Starter Motorand Attaching Parts........ 1 5~9 

6. OIL SUMP AND INDUCTION SYSTEM 

Oil Sump Assembly and Oil Suction Screen 6-1 

Intake Pipe Assembly.... 6-3 

Carburetor AYsembly..... ..6-5 

Priming System.......... 6~7 

7. SERVICE KIT SECTION 

Seal and Gasket Set........... 

7-1 

Cylinder, Piston and Ring Assembly.... 7-2 

8. NUMERICAL INDEX 

.8-1

~AVCO LYCOMING 

0-235 SERIES PA´•RTS CATALOG 

0-255 SERIES 

Oversize and Undersize Parts Listing 

PART NO. DESCRIPTION OVERSIZE UNDERSIZE 

W5 P10 P15 P20 P30 M03 M06 M10 

61681 GUIDE, Valve intake X X X X 

LW-11626 GUIDE, Valve X X X X 

66796 INSERT, Spark plug X 

69796 DOWEL, Crankshaft bearing X 

60814 BUSHING, Propeller flange X X X X 

73757 BUSHING, Propeller flange X X X X 

61258 SEAT, Intake valve (Alum Bronze) X X X 

LW-11900 SEAT, Intake valve (steel) Allison X X X 

LW-16800 SEAT, Intake valve (solid) X X X 

60337 SEAT, Exhaust valve (solid) X X X 

LW-16699 SEAT, Exhaust valve, Allison X X X 

68763 BEARING, Crankshaft X X X 

LW-1 3884 BEARING, Crankshaft, front X X X 

61533 BEARING, Crankshaft, right front X X X 

61520 BEARING, Crankshaft, left front X X X 

69373 BEARING, Connector rod X X X 

Studs available in P03, P07 and P12 oversize. 

NOTE 

When ordering oversize or undersize parts, be sure to specify the required oversize or undersize dimension 

along with the proper part number. For example: to order bearing LW-13521 in .003 undersize, order part 

number LW-13521-M3. Oversize code is "P" while undersize code letter is "M". These letters are then 

followed by the numbers designating the size in thousandths of an inch.



CRANKCASE, CRANKSHAFT AND CAMSHAFT GROUP 

CRANKCASE ASSEMBLY 

OUANTITY PER ASSEMBLY 

N 

PART 

REF. BESCRIPTION Alcle 

RUMBER c c c F F H J K K K L M N N 

1 2 2 2 2 2 2 2 2 2 2 2 2 

L 

BCACABCAABCAC 

AC 

1 78213* CRANKCASE ASSEMBLY 1 1 1 

78214’" CRANKCASE ASSEMBLY 1 1 t 1 1 

LW-11631’* CRANKCASE ASSEMBLY 1 1 1 1 1 

LW-13257*’ CRANKCASE ASSEMBLY 

LW-13282’* CRANKCASE ASSEMBLY 1 1 1 1 1 

LW-16354*’ CRANKCASE ASSEMBLY 1 

LW-18735*’ CRANKCASE ASSEMBLY 1 

2 61182 STUD, 3/8-24 x 10-15/64 long 2 2 2 2 2 2 

3 74124 STUD, 3/8-16 x 9-11/16 long 4 4 4 4 4 4 

4 38-12 STUD, 3/8-16 x 1-1/2 long 24 124 124 124124 24 

5 31C-12 STUD, 5/16-18 x 1-1/2 long 4 

31C-12 STUD, 5/16-18 x 1-1/2 long 2 

6 LW-11623 STUD, 7/16-20 x 10-7/16 long 2 2 2 2 2 2 2 2 2 2 2 

7 LW-11622 STUD, 7/16-14 x 9-25/32 long 4 4 4 4 4 4 4 4 4 4 4 

8 44-13 STUD, 7/16-14 x 1-5/8 long 8 8 8 8 8 8 8 8 8 8 8 

9 38-13 STUD, 3/8-16 x 1-5/8 long 16116 161161161161161161 16116116 

10 310-13 STUD, 5/16-18 x 1-5/8 long 1 

11 STD-557 DOWEL, 1/2 dia. x 19/32 long, 

hollow 2 

12 ISTD-514 DOWEL, 5/16 dia. x1/2 long 2 

13 169796 DOWEL, Crankshaft bearing 2 

14 1102 PLUG, 1/8-27 NPT, Alien 4 4 4 

1102 PLUG, 1/8-27 NPT, Alien 3 

15 ISTD-1111 ELBOW, 3/4 pipe hose 900 1 1 1 1 1 1 1 1 1 1 1 

16 161584 VALVE, Hydraulic 1 

17 161531 GASKET, Hydraulic valve 1 1 1 

18 161583 COVER ASSY., Hydraulic valve 1 

19 LW-14260 SEAL, Oil 1 

20 61227 LEVER, Hydraulic valve 1 

21 ISTD-131 SCREW, 1/4-28 x 1.00 long, 

hex hd. dr. 1 

22 ISTO-43 NUT, 1/4-28 Slotted shear 1 

23 ISTD-68 PIN, Cotter, 1/16x1/21ong 1 

24 ISTD-160 WASHER, 1/4 lock 2 2 2 

25 STD-8 WASHER, 1/4 plain 2 2 2 

26 STD-1875 BOLT, 1/4-20 x 13/16 long 2 2 2 

27 61555 PLUG, Hydraulic valve hole 1 1 

28 161554 COVER, Hydraulic valve hole plug 1 1 1 

Used with controllable pitch propeller. 

Used with fixed pitch propeller. 

1-1

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~lAVCO I VCOMING 0-235 SERIES PARTS CATALOG 


OIL LEVEL GAGE ASSEMBLIES 

O 

OUANTITV PLR ASSLMRLY 

FIG. 

N 

PART 

RE~. 

DIESCRIPTION Alf´•IC C C C F F H J K K K L M N N 

1 2 2 2 2 2 2 2 2 2 2 2 2 2 

WUMBER 

L Br;ACA9CAABCAC AC 

2 L 

1 75735 TUBE, Oil level gage, short 1 1 1 1 1 1 f 

75767 TUBE, Oil level gage, intermediate 1 1 

75736 TUBE, Oil level gage, long 1 1 1 1 1 1 1 1 1 1 1 1 1 

2 LW-12789 TUBE ASSY., Oil level gage, 12-13/16 

long 

3 75767 TUBE, Oil level gage 

1 

4 77527 EXTENSION, Oil filler 

1 

5 72220 GASKET, Oil level gage 

1 

6 72059 GASKET, Oil level gage 1 

7 74068 RING, Oil level gage seal 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

8 74065 RING, Oil level gage seal 1 1 

9 72312 RING, Oil seal 1.00 ID x 1/8 section 1 

10 162219 GAGE ASSY., Oil level 1 1 1 1 1 1 1 

LW-14752 GAGE ASSY., Oil level 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

LW-14781 GAGE ASSY., Oil level 1 1 

LW-14746 

GAGE ASSY., Oil level 

LW-14792 

GAGE ASSY., Oil level 

11 72842 PLUG, Oil level gage 

72844 PLUG, Oil level gage 

74314 PLUG, Oil level gage 

12 STD-406 DOWEL, 3/16 x 1/2 long 

13 74217 RING, Oil level gage 

1 

1 1 

1 1 1 1 1 1 1 1 1 1 1 1 111 1 

1 1 

1 

2 

1 

1-3

I VCOIVIING 0-235 SERIES PARTS CATALOG 

io;;; 

7-8-9 

i 

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j 

Figure 2. Oil Level Cage Assemblies 

1-4

~IAVCO LYCOMING 



CRANKSHAFT, CAMSHAFT AND RELATED PARTS 

o 

OUARTITV PER ASSEMRLI 

FIG. 

W 

PART 

Rf~. OESCRIPTIOW A C C C C C F F H J K K K L L M N N 

WUMBLR 1 1 1 2 2 2 2 2 2 2 2 2 2 2 1 2 2 

L BCACABCAABCAC AC 

3 

L 

1 LW-12693* CRANKSHAFT ASSY. 1 1 

LW-12699’’ CRANKSHAFT ASSY. 1 1 

LW-12697*’ CRANKSHAFT ASSY. 1 1 1 1 1 1 1 1 1 1 1 1 

LW-18697** CRANKSHAFT ASSY. 1 

LW-12947’’ CRANKSHAFT ASSY. 1 

2 STD-1211 PLUG, 2.00 dia. expansion 1 

3 STD-1065 DOWEL. Stepped, 19/64 x 1/4 dia. 

x 35/64 long 1 

4 60814 BUSHING. Propeller flange 6 6 

60814 BUSHING, Propeller flange 5 

5 73757 BUSHING. Propeller flange 1 

6 61510 PLUG, 1-3/4 OD 1 1 1 

7 75706 CAMSHAFT ASSY. 1 

8 61155 GEAR. Crankshaft 1 

9 61156 LOCKPLATE, Crankshaft gear 1 

10 iSTD-847 SCREW, 5/16-24 x 1.00 long 1 

11 69340 SUPPORT ASSY.. Starter ring gear. 

10/12 pitch, 1.91:1 drive 1 1 

68942 SUPPORT ASSY., Starter ring gear. 

10/12 pitch, 1.91:1 drive 1 1 

76124 SUPPORT ASSY., Starter ring gear, 

10/12 pitch, 1.91:1 drive 1 


10/12 pitch. 3.25:1 drive 1 11 


I~ 

60882 

10/12 pitch, 3.25:1 drive 1 1 1 1 1 1 

LW-13675 

SUPPORT ASSY., Starter ring gear, 

10/12 pitch, 3.25:1 drive 1 1 1 1 1 1 1 

LW-16577 


10/12 pitch, 3.25:1 drive 1 1 

LW-18694 


10/12 pitch. 3.25:1 drive 1 

LW-18736 


12/14 pitch, 3.25:1 drive 1 

GEAR, Starter ring, 10/12 pitch 1 

72566 GEAR, Starter ring. 12/14 pitch 1 

STD-1214 SCREW, Truss head, 10-32 x 3/8 long 2 2 2 



Revised February, 1984 

1-s

2581 

4.5 

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551 

~I o" u,3D 

s 

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LW-12698 

V) 

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’8 

LW-12692 

5 4 

i 

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F C, 

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5 

4P 

LW-I 2696 

4 

LW-1 8692 65 

V) 

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CRANKCASE RELATED PARTS 

o 

OUAISTITI PER ASSEMBLY 

FIO. 

N 

PART 

REF, DESCRIPTION A C C C C C F F H J K K K L L M N N 

WUMBER 

11122222222222 22 

L 

B C P. C 11 8 C A R B C R C A C 

4 

L 

1 1028-8 BALL, 11/16 dia. 1 

2 61084 SPRING, Oil pressure relief valve 1 

3 STD-425 WASHER, No. 10 plain (Max. 9) un 

4 STD-1045 GASKET, 1-1/4 ID x 1-1/2 OD x 3/32 

annular 1 

5 76529 PLUG, Oil relief valve 1 

6 77808 VALVE ASSY., Oil pressure relief, 

adjustable 1 

7 68763~ BEARING, Crankshaft 6 6 6 

68763" BEARING, Crankshaft 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 

68763*’ BEARING, Crankshaft 4 

8 61533’ BEARING, Crankshaft, right front 1 1 1 

61520* BEARING, Crankshaft, left front 1 1 1 

LW-13884*’ BEARING, Crankshaft, front 2 

9 LW-13792 SML, Crankshaft oil 1 

10 72091 RING, Oil seal, 23/64 ID x 7/64 dia. 

section 8 

72091 RING, Oil seal, 23/64 ID x 7/64 dia. 

section 2 2 2 2 2 

11 I LW-11632 RING, Oil seal, 7/16 ID x 5/64 dia. 

section 6 6 6 6 6 

12 171105 BODY, Tappet 8 

13 171032 BUSHING. Engine support (1.00 inch 

diameter mounting hole) 8 8 8 8 8 8 8 8 8 8 

14 ISTD-619 WASHER, 17/32 ID x 1-3/4 OD x 

5/32 inch thick 8 8 8 8 8 8 8 8 8 8 



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Li’l~AVCO I VCONIING 0-235 SERILS PARTS CATALOG 


CRANKSHAFT IDLER GEARS AND TACHOMETER SHAFT 

O 

ODANTITY PER ASSEMRLV 

FIO. 

N 

PART 

REE. DESCRIPTION Ale c c c c F F H J K K K L L M N N 

IUMBER 

1122222222222 22 

L 

B C ii C P. R C A A R C A C A C 

5 

L 

1 74996 GEAR ASSY., Crankshatt idler 2 2 2 2 2 2 2 

2 77309 BUSHING, Crankshaft idler gear 2 2 2 2 2 2 2 

3 74996 GEAR ASSY., Crankshatt idler 1 1 1 1 1 1 1 1 1 1 1 1 11 

4 77309 BUSHING, Crankshaft idler gear 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

5 75072 GEAR ASSY., Crankshaft idler 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

6 77309 BUSHING, Crankshaft idler gear 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

7 61151 SHAFT, Crankshaft idler gear 2 

8 73817 LOCKPLATE, 1/4 bolt, 1-3/4 spacing 2 

9 STD-705 BOLT, 1/4-20 x 11/16 long 4 

10 75708 SHAFT ASSY., Tachometer 1 

11 78368 PIN, 3/16 x 2-5/16 long 1 

12 61544 PLUNGER, Fuel pump, long 1 1 1 1 1 1 i 1 1 1 1 1 1 1 1 1 

13 45530 RING, Oil pump shaft retaining 1 

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~I/AIVCO I VCOIVI I NG 0-235 SERIES PARTS CATALOG 


CRANKCASE ATTACHING PARTS 

o 

OUANTITV PER ~SSEMBLV 

FIG. 

IS 

PART 

K L M N N 

REF. DESCRIPTIOIS A C C C C C F F H J K K 

WUMRER i 1 2 2 2 2 2 2 2 2 2 2 2 2 2 

6 

L 

STD-1414 BOLT, 1/4-20 x 1-1/2 long 8 


2:ISTD-8 WASHER, 1/4 plain 16 

3 60803 STRAP, Lifting 1 

4 STD-2084 BOLT, 1/4-20 x 1-3/4 long 1 

5 AN6-21 BOLT, 3/8-24 x 2-13/64 long 1 

6 STD-160 WASHER, 1/4lock 9 

7 STD-1411 NUT, 1/4-20 plain 9 

8 STD-1416 BOLT, 1/4-20 x1-1/2 long, 

dr. end 3 

9 STD-8 WASHER, 1/4 plain (Max. 9) on 

10 ISTD-1409 NUT, 1/4-20 Slotted shear 3 

11 STD-33 WASHER, 3/8 plain 2 

12 ISTD-872 NUT, 3/8-24 Slotted shear 

13 AN6-34A BOLT, 3/8-24 x 3-19/32 long 2 


15 STD-678 WASHER, 3/8 lock 2 

16 STD-596 NUT. 3/8 plain 2 

17 STD-1414 BOLT, 1/4-20 x 1-1/2 long 1 1 

18 STD-1419 BOLT, 1/4-20 x 1-1/8 long 2 2 

19 ISTD-8 WASHER, 1/4 Dlain 4 4 

20 STD-160 WASHER, 1/4lock 3 3 

21 STD-1411 NUT. 1/4-20 plain 1 1 

1-11

L~CO LYCOMING 


1-2-8-7~ 4-6-)7 3\ 1-2-6-7 

~-5-11-12 

13-14-15-16 

1-2-6-7 

i 

ro 

I:´•j I 

I 

8 

I 

8 

13-14-15-16 

/II____ 

r"0 

18-19-20-21 

Ir -~T 

17-19-20-21 

1-2-6-7" ULB-9 ,10 

Figure 6. Crankcase Attaching Parts 

1-12

~VCO LYCO IVI I NG 0-235 SERIES PARTS CATALOG 

ACCESSORY HOUSING AND RELATED PARTS 

ACCESSORY HOUSING ASSEMBLY 

O 

OUAWTITV PLR A~SEMBLY 

FIG. 

N 

PART 

RLF~. DESCRIPTIOW AICIC C C C F F H J K K K L M N N 

WuMBEn 

12222~22222 22 

L ,e n c R B P. Pl B C 4 A 

7 

C 

L 

1 73818 GASKET, Accessory housing 1 

2 68796 HOUSING ASSY., Accessory 1 1 

68798 HOUSING ASSY., Accessory 1 1 

68800 HOUSING ASSY., Accessory 1 

68802 HOUSING ASSY., Accessory 1 1 1 1 




68790 HOUSING ASSY., Accessory 1 1 1 

68792 HOUSING ASSY., Accessory 1 1 1 1 1 1 1 1 1 1 1 


LW-12044 HOUSING ASSY., Accessory 1 

LW-16011* HOUSING ASSY., Accessory 1 1 1 

3 31C-12 STUD, 5/16-18 x 1-1/2 long 2 2 2 2 2 2 2 2 2 2 2 2 2 2 22 

31C-12 STUD, 5/16-18 x 1-1/2 long 4 

4 316-19 STUD, 5/16-18 x 2-3/8 long 2 2 2 2 2 2 2 2 2 2 2 2 2 2 22 

310-19 STUD, 5/16-18 x 2-3/8 long 4 4 4 

5 31CD-17 STUD, 5/16-18 x 2-1/8 long 3 

6 256-22 STUD, 1/4-20 x 2-3/4 long 4 

7 61400 STUD, 1/4-20 x 1-3/16 long 2 

8 1102 PLUG, 1/8-27 NPT 2 

9 STD-783 PLUG, 1/4-18 NPT f 

10 STD-784 PLUG, 3/8-18 NPT 1 

11 1 61175 ADAPTER, Tachometer 1 

LW-16011 Housing provides for two impulse magnetos. 

2-1

0-235 S~RIES pl(sTs 

~co LYCOMING /I;j 

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aa 

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j r8-9 

4-( \CS 

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II,n i Housing Assembly 

Figure 7´• Accessory

I VCOIVIING 0-235 SLRIES PARTS CATALOG 


OIL PUMP ASSEMBLY AND ACCESSORY HOUSING ATTACHING PARTS 

o 

OUAWTITI PLR ASSEMBLI 

N 

PART 

RLF. DLSCRIPTIOW A C C C C C F F H J K K K i L M N N 

IUMBLR 

i 22222222222 22 

8 

L 

B C A C A B C a B C 4 C a C 

1 78531 BODV ASSY., Oil pump 1 

2 LW-13775 IMPELLER ASSY., Oil pump driven 1 

3 61174 SHAFT, Oil pump drive 1 

4 60746 IMPELLER, Oil pump driving 1 

5 LW-14260 SEAL, Tachometer drive, oil 1 



8 STD-160 WASHER, 1/4lock 12 

9 STD-1646 BOLT, 1/4-20 x 2.00 long 2 2 2 2 2 2 2 2 2 2 2 2 2 22 

10 STD-1885 BOLT, 1/4-20 x 1-41/64 long 2 2 2 

11 STD-1204 BOLT, 1/4-20 x 15/16 long 10 

12 STD-1420 NUT, 5/16-18 Slotted 3 

13 STD-1411 NUT, 1/4-20 plain 2 

L 

2-3

~CO LYCO IV1 I NG 


-8-11 

i 

i i:/i 

ci´•i:´•i’if) 

I 

7-8-9 

a 

i.. 

C~ZW-h 1W 1: 

rir 

7 1 

C’ 

8 

10 Xi 

ir 

i~ P I 

I~-i ii 

ii. 

´•(C’j 

I 

iC 

i 

7-8-11 

IC vi 

(/1 ~9 

11 \I 

I‘ 1’Z 

1. 

Figure 8. Oil Pump Assembly and Accessory Housing Attaching Parts 

2-4

,~iAVCO LYCOMING 



PROPELLER GOVERNOR OIL I_INE 

O 

OOANTITY PER ASSEMRLV 

FIO. 

N 

PART 

REF. DESCRIPTION AICIC C C F F H J K K K L L M N N 

IUMBER 

122222P22222 22 

Q 

L 

B C It C I R C A A A C A C A C 

1 75167 TUBE ASSY., Prop. governor oil line 1 

2 STD-1930 HOSE, 3/810 x 1.00 long 1 

3 75165 CLIP, Prop. gov. oil line support 1 


5 STD-475 WASHER, 5/16 lock, internal teeth 

6 STD-1838 BOLT, 5/16-18 x 15/16 long, hex hd. 1 

8 LW-16266-25-38 CLAMP 1 

8 MS20822-6* ELBOW, 3/8 flared tube 1/4 NPT, 900 1 

9 74070*’ ELBOW, 3/8 flared tube 9/16-18 

str, thd., adj. 45" 

L 

Assemble in right crankcase, front, 

Assemble in prop. governor adapter. 

2-5

~ATVCO LYCn IV1INr~ 

0-235 SLRIES PARTS CATALOG 

J 

i .i~ 

r-’- 

ill 

ii 

s i 

o 

2; 

i 

e, 

i 

.s 5 

3 

Figure 9. Propeller Governor Oil Line 

2-6

II~AVCO LYCOMING 



PROPELLER GOVERNOR DRIVE AND COVER 

FIC. 

OUANTITV PER ASSEMBLY 

N 

PART 

REF. DESCRIPTION Alcle 

NUMBER c c c F F H J K K K L M N N 

2 2 2 2 2 2 2 2 2 2 2 2 2 

L 

BCACARCAABCAC 

10 

68317 SHAFTGEAR, Prop. governor drive 1 

2 71596 WASHER, Accessory driven gear 1 

3 STD-1221 RING, 13/16 dia. x 3/64 thick, 

internal retaining 1 

4 68315 GASKET, Accessory drive adapter 1 

5 75153 ADAPTER ASSY., Prop. governor drive 1 

6 1102 PLUG, 1/8-27 NPT, Alien 1 

7 67556 STUD, 5/16-18 x 2.00 long 4 

8 STD-1774 PIN, 1/8x1/41ong 1 


10 ISTD-475 WASHER, 5/16 internal lock 4 

11 ISTD-1410 NUT, 5/16-18 plain 4 

12 172053 GASKET, Governor 1 

13 172378 COVER, Governor drive 

14 iSTD-35* WASHER, 5/16 plain on 

15 STD-475 WASHER, 5/16 internal lock 4 

16 STD-1410 NUT, 5/16 plain 4 

AC 

32 required for Woodward governor; 4 required for AN governor. 

2-7

o 

O 

2592 

O 

r 

"1~ 

CLLb;l "i 

CI ..I´•: 

i,l 

ii 

~J7 

1;; 

\\I 

O 

O 

Z 

O 

Bm 

´•\o 

on 

d 

3(9 

a 

14 V, 

m 

3P 

D 

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Q 

to 

\Y‘9 1, 

6 

O 

r;ul 

w 

cnm 

´•o 

=IP 

V) 

C) 

r 

O 

G)

L?I/AVCO LYCOMING 0-235 SERIES PARTS CATALOG 


FUEL PUMP ASSEMBLY AND ATTACHING PARTS 

FIC. 

OUANTITV PLR ASSLMRLY 

N 

PART 

RLF. DESCRIPTIOR AIC 

WUMBER C C C C F F H J K K K L L M N N 

t 1 2 2 2 2 2 2 2 2 2 2 2 2 2 

L 

11 

BCACABCAABCAC A C 

L 

1 75246 FUEL PUMP, Low pressure, dual 

diaphragm (6440295) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

2 60096 GASKET, Fuel pump 1 1 1 1 1 1 1 1 1 1 1 1 1 111 

3 STD-33 WASHER, 3/8 plain 2 2 2 2 2 2 2 2 2 2 2 2 2 2 22 

4 STD-1882 SCREW, 3/8-16 x 1-9/32 long, 

socket hd., dr. hd. 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 

5 60096 GASKET, Fuel pump 1 1 1 1 

6 65098 COVER, Fuel pump 1 1 1 1 

7 STD-33 WASHER, 3/8 plain 2 2 2 2 

8 LW-38-.75 BOLT, 3/8-16 x 3/4 long, hex hd. 2 2 2 2 

9 STD-678 WASHER, Lock 2 2 2 2 

2-9

~AVCO LYCOMING 0-235 SERIES PARTS CATALOG 

k 

C) 

Crs 

1\ 

i, 

I~ 

\;ip´•~, 

/Ia", 

2-5 

37 /1 

Figure 11. Fuel Pump Assembly and Attaching Parts 

2-10

O~ LYCr IF~IING 0-235 SLR(LS PARTS CATALOG 


VACUUM PUMP DRIVE AND COVER 

O 

OUBNTITV PER ASSEMBLI 

FIG. 

W 

PART 

REF. DESCRIPTIOW A C C C C C F F H J K K K L M N N 

IUMBER 

1 22222222222 22 

L 

B rJ A C A B r. PI /i 8 C P. C A C 

12 L 

1 61098 ADAPTER ASSY., Vacuum pump 1 1 1 1 1 1 i 1 1 1 1 1 1 

2 STD-1774 PIN, 1/8 dia. x 1/4 long 1 1 1 1 1 1 1 1 1 1 1 1 

3 STD-208 SEAL, Oil, 7/8 ID x 1-1/2 OD 

x 5/16 wide 1 1 1 1 1 1 1 1 1 1 1 1 1 

4 72970 GEAR ASSY., Vacuum pump driven 1 1 1 1 1 1 1 1 1 1 1 1 

5 161183 GASKET, Accessory adapter 1 

6 71596 WASHER, Accessory driven gear 1 1 1 1 1 1 1 1 1 1 1 1 1 

7 8313 GASKET, Vacuum pump 1 1 1 1 1 1 1 1 1 1 1 1 1 

8 60430 COVER, Vacuum pump 1 


10 ISTD-1BO WASHER, 1/4lock 4 

11 I STD-1411 NUT, 1/4-20 plain 4 

12 168593 SPACER, Vacuum pump stud 4 4 4 4 4 4 4 4 4 

2-11

i-~I/AVCO LYCOMING 0-235 SLRIES PARTS CATALOG 

´•~Q´• 

s c~ 

171 

1,j3 iC/ 

CS;,i 

77Y,c: ~I ,I 

r 

d 

D 

’Q 

hS 

87 

i-´•j 

107 ao 

11 

o 

12 -7 o’Sj 

i 

,1/ 

r 

I 

9 Q~ ~L 

~I 

rg 0, 

\v\$ jl/ 

~6 

bjl/( "2 

Figure 12. Vacuum Pump Drive and Cover 

2-12

,´•~AVCO LYCOMING 0-235 SERIES PARTS CATALOG 


OIL FILTER ASSEMBLY AND OIL COOLER BYPASS VALVE 

O 

W 


FIG. 

PART 

REF. OESCRIPTIOW AICIC C C C F F H J K K K L M 

WUMBER N N 

1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 

L BCACARCAABCAC AC 

13 

L 

1 77853 HOUSING ASSY., Oil filter 1 

2 77852 BASE ASSY., Oil filter 1 1 1 1 11 

3 154[)19625 IOIL FILTER, Short, spin-on I I I I 1 I I I I 1 I I 1 111111111 

4 LW-12999 PLATE, Oil filter adapter 1 1 1 1 11 

1(5 ILW-12795 IGASKET, Oil filter adapter i 1121 1 I II I rl i I 1 121212[2[2 

6 75944 VALVE ASSY., Temp. control, oil cooler 

bypass f 1 1 1 1 1 t 1 1 1 1 1 1 1 1 1 

7 62817 SCREEN ASSY., Oil pressure 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

8 68974 HOUSING, Oil pressure screen 1 1 1 1 1 1 

9 69510 HOUSING, Oil pressure screen 1 f i 1 1 1 1 f 1 1 1 1 1 

10 61173 GASKET, Oil pressure housing 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

11 ISTD-294 GASKET, 7/8 x 5/8 ID x 3/32 

annular 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

12 ISTD-111 GASKET, 1.00 ID x 1-1/4 OD x 3/32 1 1 1 

13 25C-10 STUD, 1/4-20 x 1-1/4 1 1 1 1 f 1 

14 ISTD-1350 PLUG, 1.00-14 so. hd. drilled 1 1 1 

15 ISTD-8 WASHER, 1/4 plain 4 

16 ISTD-1BO WASHER, 1/4 lock 1 1 1 1 1 1 

17 ISTD-1856 SCREW, 1/4-20 x 1.00 hex hd., 

slotted 4 4 4 4 4 4 4 4 4 4 4 4 4 4 

STD-1856 SCREW, 1/4-20 x 1.00 hex hd., 

slotted 3 3 3 3 3 3 

18 ISTD-1411 NUT, 1/4-20 plain 1 1 1 1 1 1 

19 69436^ SPRING, Oil cooler bypass 1 1 1 1 

20 162415^ PLUNGER, Oil cooler bypass 1 1 1 1 

21 ISTD-294 GASKET, 7/8 x 5/8 ID x 3/32 

annular 1 1 f 1 1 1 1 1 1 1 1 1 1 1 1 

22 62417 PLUG, Oil cooler bypass 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

23 ISTD-784 PLUG, 3/8 NPT 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 

24 AN816-8 NIPPLE, 1/2 flared tube, 3/8 NPT 2 2 

25 AN777-8D ELBOW, Universal 750 1 1 1 

26 IAN901-8A GASKET, Metal tube connection seal 1 1 1 

27 71620 BOLT, Oil cooler fitting 1 1 1 

28 71623 WASHER, Oil cooler fitting 1 1 1 

Do not use spring and plunger on engines equipped with 75944 oil cooler bypass valve or engines without oil cooler Installotion. 

Revised January, 1987 2-13

-27 

nl 

n95 

19 

25 

OO 

O 

O 

w 

r! 

i- 

7 

D 

Ip \I 

i 

\:c, 

N 

"’7to o 

o 

21 

o"c: 

o 

o 

4 

1J~ 

i 

"u, 

~yYY 1 6 

B 

j 

o ~23 

´•,-;´•;I 

:I 

-Ic’ 

/-24 

O 

r; 

w 

cn 

V) 

m 

cn 

i ~k ~7 

3 

15 

~o, ~12 C) 

~3D 

cn 

P 

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C)

6:~AVI=O LYCOMII\IG 0-235 SERIES PARTS CATALOG 

CYLINDER, PISTON AND VALVE TRAIN 

CONNECTING RODS, PISTONS AND RING ASSEMBLIES 

FIG. 

OUAWTITY PER ASSEMRLY 

N 

PART 

REF. OLSCRIPTIOI Alcle c c c F F H J K K K 

IUMBER 

L M N N 

L 1 ~2222222221 27 

B ii C a O C a a o c a c n C 

14 L 

t 78030 ROD ASSY., Connecting 4 

2 LW-13923 BUSHING, Connecting rod, upper 4 

3 78027 BOLT, Connecting rod 8 

4 LW-12186 NUT, Connecting rod 8 

5 69373 BEARING, Connecting rod 8 

6 73851 PISTON, Low compression 4 4 4 4 4 4 

LW-11621 PISTON, Compression ratio 9.7:1 4 4 4 

LW-13623 PISTON, Compression ratio 8.5:1 4 4 4 4 4 4 4 4 

7 60827 PIN, Piston 4 4 4 4 4 4 

LW-13445* PIN, Piston 4 4114 4 4 4 4 4 4 4 4 4 

8 60828 PLUG, Piston pin 8 8 8 8 8 8 

LW-11625 PLUG, Piston pin (piloted) 8 8 8 8 8 8 8 8 8 8 8 8 

9 68196 RING, Piston, compression 8 8 8 8 8 8 

78862 RING, Piston, compression 8 8 8 8 8 8 8 8 8 8 8 

10 ILW-16867 RING, Piston, oil regulating 4 4 4 4 4 4 

78864 RING, Piston, oil regulating, 

expander type 4 4 4 4 4 4 4 4 4 4 4 

11 60072 RING, Piston, scraper (plain) 4 4 4 4 4 4 

Used with piloted plug P/N LW-11625. 

Revised January, 1987 3-1

25so 

O 

O 

1 O 

-n 

O 

P 

a 

t$Pm-!3 

T.´•h 

Z 

O 

i 

a 

i, 

r 

li/ 

9 O 

3 cn 

C\ lil/ ~1111 m 

33 

8 

~a P 

33 

a V) 

r; 

O 

ul 

m 

V, 

C) 

co 

It 

3+ 

r 

O

LYCOMING 



CYLINDER ASSEMBLY 

FIG. 

QUA~TITY PER ASSEMBLY 

R 

PART 

REF. DESCRIPTIO# Alcle 

WUMBER c c c F F H J K K K M N N 

1 2 2 2 2 2 2 2 2 2 2 2 2 

L 

15 

1 71828 CYLINDER 8 HEAD ASSY.,Plain 4 4 4 4 4 4 

BCACABCAABC C AC 

LW-11633 CYLINDER 8 HEAD ASSY., Nitrided 4 4 4 4 4 4 4 4 4 

LW-12986 CYLINDER 8 HEAD ASSY., Plain 4 4 4 

LW-18290* CYLINDER 8 HEAD ASSY., Nitrided 4 4 

LW-16701* CYLINDER HEAD ASSY., Plain 4 4 4 4 4 4 

LW-16703’ CYLINDER 8 HEAD ASSY., Nitrided 4 4 4 4 4 4 4 4 4 

LW-16704’ CYLINDER HEAD ASSY., Plain 4 4 4 

2 61258 SEAT, Intake valve 4 4 4 4 4 4 

LW-11900 SEAT, Intake valve (steel) 4 

3 60337 SEAT, Exhaust valve 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 

LW-16699" SEAT, Exh;lust valve 4 

4 61681 GUIDE, Valve, intake and exhaust 8 8 8 

5 61681 GUIDE, Valve, intake 4 4 4 4 4 4 4 4 4 4 4 4 4 4 

6 LW-11626 GUIDE, Valve, exhaust 4 4 4 4 4 4 4 4 4 4 4 4 4 4 

7 66796 INSERT, Spark plug, 18-1.5 MM 8 

8 31C-12 STUD, 5/16-18 x 1-1/2 long 8 

9 STD-700 ELBOW, 90", 3/8 flared tube 4 

Incorpontes Allison exhaust valve seats. 

Allison valve seat. 

3-3

LYCOMING 


j/ 

´•´•~´•I 

.e.b 

~45 

Figure 15. Cylinder Assembly

~iAVCO LYCOMING 



CYLINDER RELATED PARTS 

O 

OUA#TITY PLR ASSEMRLV 

N 

PART 

C C C C C F F H J K K K L L M N N 

RE~. DESCRIPTIOI A 

1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 

RUMRLR 


16 L 

1 73806 ROD ASSY., Push 8 

2 60831 ROCKER ASSY., Valve 8 

3 60398 BUSHING, Valve rocker 8 

4 73807 SCREW, Valve adjusting 8 

5 STD-587 NUT, 9/16-18 x 5/32 thick 8 

6 LW-13790 SHAFT, Valve rocker 4 

7 LW-12892 THRUST BUTTON, Rocker shaft 8 

8 75906 GASKET, Rocker box 4 

9 61247 COVER, Rocker box 4 

10 ISTO-1925 SCREW, 1/4-20 x 5/8, self-locking 24 

11 1383-8 NUT, 3/8-24 plain 32132132 32 

383-8 NUT, 3/8-24 plain 16116 16116116116116116116(16116 

12 ISTD-2106 NUT, 7/16-20 plain 16116 16116116116/16116116116116 

13 162869 RING, Oil seal, 3/32 dia. x 4-3/8 4 

14 65321 GASKET. Exhaust flange 4 

77611 GASKET, Exhaust flange 

4 

15 61260 FLANGE, Exhaust, stainless 4 4 4 4 4 4 4 4 4 4 44 4 

61259 FLANGE, Exhaust, carbon 

4 


17 STD-475 WASHER, 5/16 lock, internal teeth 8 

18 STD-1410 NUT, 5/16-18 plain 8 

3-5

I 

2593 

13 

O 

o 

cn 

cP 1 

n 

QI 

w;Ip 

i 

11 

II 

r 

iiiI 1 

I i ,I i I i Iii~l 

j! 

h 

1Ii/ 

i 

Ibu k 

p, 

Iii ii 

7;’1 

I;:i 

i 

o 

1 

Z 

1~7 O 

,il 

Y 

N 

w 

~7 iiJ 

UI 

/14 

I; 

,15 

1 

S 

O 

O 

o 

V) 

m 

3D 

m 

u, 

OY ’yo~ 

P 

9~ ~7h 3P 

111 

cn 

P 

r 

O 

n

~IAVCO LYCO iV1 I 1\1G 0-235 SERIES PARTS CATALOG 


VALVE ASSEMBLY 

o 

OURNTITI PER ASSEMRLI 

FIG. 

N 

PART 

C F F H J K K L M N N 

REE. DESCRIPTION Alcle cc 

NUMBER 

2 2 2 2 2 2 2 2 2 2 2 2 2 


17 L 

1 60037 VALVE, Intake 4 4 4 4 4 4 

LW-11901 VALVE, Intake 4 4 4 4 4 4 4 4 4 44 

2 66531 VALVE, Exhaust 4 4 4 4 4 4 

LW-11634 VALVE, Exhaust 4 4 4 4 4 4 4 4 4 4 4 4 4 

3 61252 SEAT, Valve spring, outer 8 

4 LW-13320 SEAT, Valve spring, inner 8 

5 LW-10077 SEAT, Valve spring 8 

6 LW-11795 SPRING, Valve, auxiliary 8 

7 LW-11800 SPRING, Valve, outer 8 

8 60903 TUBE, Push rod shroud 8 

9 LW-18661 SEAL, Shroud tube 16 

10 60009 KEY, Valve 16 

3-7

I 

2wo 

1 

C) 

O 

c 

a 

i r- 

;5?j 

w 

29 

m/i~////,i 

a 

la:~´• 

I 

j!/ 

II:::’ 

´•11II I I I?i111,, 

I IIi 

3 

j 1 j ~:liii 

\i\j 

I 

iii 

~III 

ii I/´• 

Rs 

It 

I 

I; ~c i´• 

3 

O 

4 r; 

f~ 

Q 

O 

Z 

O 

u, 

m 

3D 

m 

b’PV1 

5 

3D 

-´•I 

cn 

o 

e 

p 

r 

o

LYCOMING 



CYLINDER HEAD DRAIN TUBES AND INTERCYLINDER COOLING BAFFLES 

FIG. 

OUANTITY PER ASSEMRLY 

IJ 

PART 

REF. DESCRIPTIOIS A C C C C C F F H J K K K 

NUMBER L M N N 

1 2 2 2 2 2 2 2 2 2 2 2 1 2 2 

L 

18 

BCACABCAABCAC AC 

1 60890 TUBE ASSY., Oil drain, cyl. no. 1 1 

2 60821 TUBE ASSY., Oil drain, cyl. no. 2 i 

3 60928 TUBE ASSY., Oil drain, cyls. no. 3 4 2 

4 STD-2180 HOSE, 3/8 ID x 1-13/16 4 

5 STD-684 NIPPLE, Straight, 3/8 ID hose 4 

6 LW-1 5592-5-05 CLAMP, Hose 8 

7 LW-13304 BAFFLE ASSY., Intercylinder 2 2 2 2 2 2 22 

8 71611 RETAINER, Intercylinder baffle 2 2 2 2 2 2 22 

9 LW-13303 HOOK, Intercylinder baffle retainer 2 2 2 2 2 2 22 

10 65614 PLUG, Baffle attaching 4 4 4 

11 ISTD-251 WASHER, No. 10 lock 444 

12 ISTD-665 SCREW, No. 10-32 x 3/4 fill, hd, dr. 4 44 

3-9

i 

o?n 

2501 

I’ 

C) 

O 

8i 

I O 

r,ii 1 

-r 

i 

c~ 

r 

8~ 

I""_~/ 

O 

z 

O 

eY 

rr 

n 

j 

//i// 

r´•- 

I! 

iu~iw/ 

i, 

gA 

o 

o9 

5 

iji 

8’´•’ 

O 

i 12 

r; 

11 

10 cn 

v, 

33 

4~ 

a123 

3PP 

V) 

C1 

P 

--I 

O 

C)

I~I/IAVCO LYCOMING 0-235 SERIES PARTS CATALOG 

IGNITION SYSTEM 

MAGNETOS AND MAGNETO DRIVES 

FIG. 

OUANTITV PER ASSEMBLY 

N 

PART 

REE. DESCRIPTIOW AICIC 

#UMBER C c c F F H J K K K M N N 

1 2 2 2 2 2 2 2 2 2 2 2 2 2 

L 

BCACABCAABCAC 

19 

AC 

1 LW-51 360-29 MAGNETO, S4LN-20 1 1 1 1 1 1 

LW-51360-37 MAGNETO, Impulse coupling, S4LN-21 1 1 1 1 

LW-51360-54 MAGNETO, Impulse coupling, S4LN-21 1 1 1 1 

LW-51360-58 MAGNETO, Impulse coupling, S4LN-21 1 

LW-163045-8 MAGNETO, S4LN-204 1 

LW-163045-3 MAGNETO, S4LN-204 1 

LW-163005-2 MAGNETO, Retard breaker, S4LN-200 1 

LW-349305-1 MAGNETO, S4LN-1209 1 1 

LW-349365-3 MAGNETO, S4LN-1227 1 

LW-349365-9 MAGNETO, S4LN-1227 1 

2 61665 GEAR, Magneto, impulse coupling 1 1 1 1 1 1 1 1 1 

3 72495 GEAR, Magneto, retard breaker 1 

4 61163 GEAR, Magneto 1 1 1 1 1 1 1 1 1 1 1 

5 LW-12706 ADAPTER, Magneto, impulse coupling 1 1 1 1 1 1 1 1 1 

6 62224 GASKET, Magneto adapter and magneto 3 2 3 3 1 3 3 1 3 3 3 

7 STD-1727 WASHER, Plain, 3/4 OD x 21/64 ID x 

1/8 thick 4 4 4 4 4 4 4 4 4 

8 STD-475 WASHER, 5/16 lock, internalteeth 4 4 4 4 4 4 4 4 4 4 4 

9 STD-1410 NUT, 5/16-18 plain 4 4 4 4 4 4 4 4 4 4 4 

10 75965 CLAMP, Magneto 4 4 

11 LW-1 2681 GASKET, Magneto 2 2 

12 LW-52305-1 KIT ASSY., Magneto ground terminal 2 2 2 2 2 2 2 

LW-157209 KIT ASSY., Magneto ground terminal 2 

13 LW-157208 KIT ASSY., Magneto ground terminal 1 

4-1

I-~AVCO LYCO n~ I NG 0-235 SERIES PARTS CATALOG 

OU~ 

I 

c~ijli 

~n 

2_1\ 

’’i 

c, yi 

~i 

:g~Ii 

C//\I !J 

r 

D 

?iI PL3 

r.ii1 

-c,kx 

;ii 

o"\\ 

T.1 

3-4 

n~ 

6 

I 

7:Z2-13 

8 

17 

~I 

ie~i´• 

Figure 19. Magnetos and Magneto Drives 

4-2

~AVCO LYCO N1I i~G 0-235 SERIES PARTS CATALOG 


MAGNETOS AND MAGNETO DRIVES 

o 

QUANTITV PER ~SSEMBLI 

FIC. 

N 

PART 

REF. DLSCRIPTION AICIF: 

C C C F F H J K K K L L M N N 

IUIBER 

22222222221 22 

20 

L 

L 

R A C A B C A A B C 4 C n C 

1 LW-15635 MAGNETO HARNESS ASSY., Right 

(Slick) 1 1 1 1 1 

2 LW-15636 MAGNETO, Right (Slick Model 4250) 1 1 1 1 1 

3 77743 HARNESS ASSY., Ignition, right 1 1 1 1 1 


(Slick) 1 

5 LW-15636 MAGNETO, Right (Slick Model 4250) 1 

6 LW-15866 HARNESS ASSY., Ignition, right 1 


(Slick) 1 i 

8 LW-16595 MAGNETO, Right (Slick Model 4281, 

impulse coupling) 1 1 

9 77743 HARNESS ASSY., Ignition, right 1 1 


(Slick) 1 

11 ILW-16594 MAGNETO, Right (Slick Model 4252, 

impulse coupling) 1 

12 77743 HARNESS ASSY., Ignition, right 1 

13 LW-15637 MAGNETO HARNESS ASSY., Left 

(Slick) 1 1 1 

14 LW-15638 MAGNETO, Left (Slick Model 4251, 

impulse coupling) 1 1 1 

15 77745 HARNESS ASSY., Ignition, left 1 1 1 

16 ILW-16587 MAGNETO HARNESS ASSY., Left 

(Slick) 1 1 



18 77745 HARNESS ASSY., Ignition, left 1 1 


(Slick) 1 


impulse coupling) 1 

21 LW-15868 HARNESS ASSY., Ignition, left 1 


(Slick) 1 1 

23 ILW-16595 MAGNETO, Left (Slick Model 4281, 


24 77745 HARNESS ASSY., Ignition, left 1 1 

25 61665 GEAR, Magneto, impulse coupling 1 1 1 1 1 

61665 GEAR, Magneto, impulse coupling 2 2 2 

26 61163 GEAR, Magneto 1 1 1 1 1 

27 LW-12706 ADAPTER. Magneto, impulse coupling 1 1 1 1 1 

LW-12706 ADAPTER, Magneto, impulse coupling 2 2 2 

28 162224 GASKET, Magneto adapter and magneto 1 1 1 1 1 

62224 GASKET, Magneto adapter and magneto 2 2 2 

4-3

L~iAVCO LYCOMING 



MAGNETOS AND MAGNETO DRIVES (Cont.) 

O 


N 

PART 

C C C F F H J K K K L M N N 

REF. DIESCRIPTION AIcle 

1 2 2 2 2 2 2 2 2 2 2 2 2 

NUMBLR 

L Br,ACABCAABCAC AC 

20 L 

29 LW-1 2681 GASKET, Magneto 2 2 2 2 2 2 

30 76961 CLAMP, Magneto 4 4 4 4 4 4 

31 LW-14057 CLIP. 1 wire 2 2 2 2 2 2 

LW-14057 CLIP. 1 wire 4 

32 LW-14060 CLIP. 2 wire 3 3 3 3 3 3 

33 STD-475 WASHER. 5/161ock, internal teeth 4 4 4 4 4 4 

34 ISTD-1727 WASHER, Plain, 3/4 OD x 21/64 ID 

x 1/8 thick 4 4 4 4 4 4 

35 STD-1410 NUT, 5/16-18 plain 4 4 4 4 4 4 

36 STD-761 COTTER PIN, 3/32 dia. x 1.00 long 1 1 1 1 

STD-761 COTTER PIN, 3/32 dia. x 1.00 long 2 2 2 

i"’ 

i 

i, \r 

i 

5-1 8-21-24 

ii 

RQ: 

I 

;I, e.~..,.c´• 

13-14-16-1 7-19-20-22-23 

j 

i 

/OQ 28 

i 

P/ ’28 

26 

\-1-2-4-9-7-8-11’-11 

14-19-1’2-19- 

20-22-23a 

36-9-12 

34130’7 ’~?e 

"733 

~29 

c. 

Q 8 

1-2-4-5-7-8-10-1 7-1 9-20 

Figure 20. Magnetos and Magneto Drives 

4-4

Ir~l/AVCO LYCOMING 0-235 SERIES P~RTS GATALOG 


IGNITION HARNESS AND LEAD ASSEMBLY (SLICK) 

IFIG. 


N 

PART 

REF. DESCRIPTION AIC C C C C F F H J K K K N N 

NDMBER 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 

21 L 

BCACABCAABCAC 

AC 

1 

1 LW-M-2403 HARNESS ASSY., Left magneto (Slick) 1 1 1 1 1 1 1 1 1 

LW-M-2415 HARNESS ASSY., Left magneto (Slick) 1 1 

LW-M-2404 HARNESS ASSY., Right magneto (Slick) 1 1 1 1 1 1 1 1 

LW-M-2416 HARNESS ASSY., Right magneto (Slick) 1 1 

2 LW-M-2375 PLATE, Spark plug cable 2 2 2 2 2 2 2 2 2 2 2 

3 LW-14060 CLIP, Two wire for 1/4 screw 3 3 3 3 2 3 3 2 3 3 3 

4 LW-14057 CLIP, One wire for 1/4 screw 2 2 

5 71909 CLAMP, 1-1/2 ID (Offset) 4 4 4 4 4 4 4 4 4 

6 LW-16266-25-50 CLAMP 1 1 1 1 1 1 1 1 1 1 

7 STD-8 WASHER, 1/4 plain 1 1 1 1 8 1 8 1 1 

8 STD-1BO WASHER, 1/4 lock, internalteeth 2 2 2 2 2 2 2 2 2 

9 STD-696 WASHER, 1/4 plain on un 

10 IAN500-416-12 SCREW, 1/4-20 x 3/4 long, fill, hd. 1 1 1 1 1 1 1 1 1 

11 IAN500A-416-10 SCREW, 1/4-20 x 5/8 long 1 1 1 1 1 1 1 1 

12 ISTD-553 SCREW, 6/32 x1/2 long, rd. hd. 4 4 4 4 4 4 4 4 4 

13 STD-1874 SCREW, 1/4-20 self-locking 4 4 

14 ISTD-1411 NUT, 1/4-20 plain 1 1 1 1 1 1 1 

15 IAN365-632A NUT, 6-32 self-locking 4 4 4 4 4 4 4 4 4 

16 76734 ZIP STRAP 2 2 2 2 6 2 2 6 2 2 2 

iM-1985-48 LEAD ASSY., Replacement top bottom 

leads (LW-M-2403’& LW-M-2404 

harnesses) unlun un un union on unlun 

M-1985-48 LEAD ASSY., Replacement top leads, 

except for 1T, 2T, (LW-M-2415 

lM-1985-72 

LW-M-2416 harnesses) on on 

LEAD ASSY., Replacement 1T, 2T leads 

(LW-M-2415 LW-M-2416 harnesses) un un 

176923-48870-63 LEAD ASSY., Repiacement, top and 

bottom leads (78539 harness) onion un un un on 

176923-72890-63 LEAD ASSY., Replacement, Nos. 1 2 

top leads (78546 harness) on on 

176923-48890-63 LEAD ASSY., Replacement, Nos. 3 4 

top leads (78546 harness) un on 

176923-48870-63 LEAD ASSY., Replacement, bottom leads 

(78546 harness) un on 

Replacement lead assemblies have spark plug terminal end assembled and are shipped with necessary pans to complete magneto end 

assembly after being cut to proper length. 

4-5

,-~AVCO LYCOMII\IG 


17 

j 

i 

j 

~t‘’´•: 

\\I’I :j I 

j 

c_ 

a 

\´•\´•,‘´•U\I; 

G 

u 

i I 

80 

a 

a ~12 

10 

´•-B 

7 

1~ 

P 

Figure 21. Ignition Harness and Lead Assembly (Slick) 

4-6

(-~AVCO LYCOMING 



SPARK PLUGS 

FIG. 


N 

PART 

REE. DESCRIPTIBN AICIC 

WUMB~R C c c F H J K K K I M N N 

2 2 2 2 2 2 2 2 2 2 2 2 

L 

22 

BCAC BCAABCnC AC 

1 1182-83 SPARK PLUG, (Champion REM-40E), 

high compression, shielded 81 1 i I I I I I I I I I 18 

1182-86 SPARK PLUG, (Champion EM-41E). 

low compression, shielded 8 8 8 8 8 8 

1182-J3 SPARK PLUG. (Champion REM-38E). 

high compression, shielded I I I I I j 1 )81 1 1 18 8 8 8 88 

1182-87 SPARK PLUG, (Champion REM-37BY), 

extended electrode, shielded I i I I I I I I I I I I 1 18 8 8 8 

1182-P3 SPARK PLUG. (AC-SR-86), 

resistor type, shielded I I I I I I 1 8 8 8 8 8 

NOTE 

The above spark plugs are those used in current production only; this list does not include additional spark plugs that are approved for use in 

these engines. See latest edition of Service Instruction No. 1042 for complete listing of all approved spark plugs. 

4-7

L~AVCO LYCOMING 0-235 SERIES PARTS CATALOG 

C~AMP1OI; 

Figure 22. Spark Plugs 

4-8

L-~VCO LYCO IVI ING 0-235 SERILS PARTS CATALOG 

ELECTRICAL COMPONENTS 

VOLTAGE REGULATORS, RELAY, ALTERNATOR AND GENERATOR DRIVE BELTS 

O 

OUANTITY PLR ASSLMBLY 

FIG. 

N 

PART 

REF. DESCRIPTIOW Alcle c c c F F H J K K K L M N N 

IUMBLR 

22222222222 22 

23 

L 

L 

R A C A D C PI A B C 4 C A C 

1 72205 REGULATOR. Voltage (12V 20 Amp.) 1 1 1 

833 REGULATOR, Voltage (12V 35 Amp.) 1 1 1 

71745 REGULATOR, Voltage (12V 50 Amp.) 1 1 

LW-10185 REGULATOR, Voltage, 12V, full transistor 1 1 1 1 1 1 1 1 1 1 1 111 

LW-15895 REGULATOR, Voltage, 12V, transistorized 1 1 1 

LW-10179 REGULATOR, Voltage, 24V, full transistor 1 

2 78059 RELAY. Overvoltage, 12V 1 1 1 1 1 1 111 

3 60886 BELT, Generator drive 1 1 1 

4 76026 BELT, Alternator drive (3/8 wide) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 11 

5-1

LYCOMING 


iC~ 

3-4 

=i!I 

i’ 

I‘Y\\ 

X 

I"C~ 

´•I- 

Figure 23. Voltage Regulators, Alternator and Generator Drive Belts 

5-2

LYCOMING 



GENERATOR MOUNTING AND ATTACHING PARTS 

FIC. 

ODANTITY PER ASSEMBLY 

N 

PART 

REF. DESCRIPTION AIC 

NUMBER C C C C F F H J K K K L M N N 

1 2 2 2 2 2 2 2 2 2 2 2 2 2 

L 

24 

BCACPBCAIBCAC AC 

1 69113 BRACKET, Generator (For 12V -20A) 1 1 1 

2 69452 BRACKET, Generator (For 12V 35A 

50A) 1 1 1 

3 60733 SHIM, 11/32 ID x 1-1/8 OD x 

.005 thick uniun un 


5 STD-160 WASHER, 1/4 lock 3 3 3 

6 STD-2084 BOLT, 1/4-20 x 1-3/4 long, hex. hd. 1 1 1 

7 STD-1414 BOLT, 1/4-20 x 1-1/2 long, hex, hd. 1 1 1 


9 STD-1411 NUT, 1/4-20 plain 1 1 1 

10 76028 LINK, Generator adjusting 1 1 1 

11 ISTD-35 WASHER, 5/16 plain 1 1 1 

12 ILW-31H.75 BOLT, 5/16-18 x 3/4 long, hex. hd. dr. 2 2 2 

13 STD-1727 WASHER, Plain, 3/4 OD x 11/32 ID 

x 1/8 thick 1 1 1 

1W ISTD-1834 BOLT, 5/16-18 x 1-1/16 long, 

hex. hd. dr. 1 1 1 

5 STD-1835 BOLT, 5/16-18 x 1-23/64 long, 

hex. hd. dr. 1 1 1 

6 STD-35 WASHER, 5/16 plain un iun on 

7 STD-1420 NUT, 5/16-18 slotted 2 2 2 

/8 STD-68 PIN, Cotter, 1/16 dia. x 1/2 long 2 2 2 

9 69951 STRUT, Generator support 1 1 1 

LW-31H.75 BOLT, 5/16-18 x 3/4 long, hex. hd. dr. 1 1 1 

5-3



12 

12 

,I 

!k/ :r/ 

i: .C 

Y 

k´• 

.I´•-/ 

z 

i 

j 

i, i 

~is´•r 

20 

´•_3 

~C’ 

1 li7 

1-´•´• 

I 

ii’/ 

7 

5 

4 

jll 

L.-~i 

17 

~18 

Figure 24. (Senerator Mounting and Attaching Parts 

5-4

~AVCO LYC(3MINIT 


ELECTRIAL COMPONENTS 

ALTERNATOR MOUNTING AND ATTACHING PARTS 

N 


PART 

REF. BESCRIPTION AICICIC 

WUMBER C C F F H J K K K L M N N 

2 2 2 2 2 2 2 2 2 2 2 t 2 2 

L 

BC;ACABCAABCAC 

25 

1 78158 BRACKET, Alternator 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

LW-13039 BRACKET, Alternator 1 

2 73383 LOCKPLATE, 5/16 bolt x 1.00 spacing 1 

3 STD-8 WASHER, 1/4 plain 1 1 1 1 1 1 1 1 1 1 1 1 1 

4 STD-160 WASHER, 1/4 lock, internalteeth 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 

5 STD-2084 BOLT, 1/4-20 x 1-3/4 long, hex. hd. 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

6 STD-1215 BOLT, 1/4-20 x 1-1/4 long, hex. hd. 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 

7 STD-1838 BOLT, 5/16-18 x 15/16 long, hex. hd. 2 

8 STD-1411 NUT, 1/4-20 plain 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

9 75380 LINK, Alternator adjusting 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

10 ISTD-35 WASHER, 5/16 plain 1 1 f 1 1 1 1 1 1 1 1 1 1 1 1 1 

11 LW-31H.75 BOLT, 5/16-18 x 3/4 long, hex, hd. dr. 1 1 1 1 1 1 1 1 1 1 1 1 1 t 1 1 

12 STD-1727 WASHER, Plain, 3/4 OD x 11/32 ID x 

1/8 thick 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

13 LW-31H.75 BOLT, 5/16-18 x 3/4 long, hex, hd. dr. 1 1 1 1 1 1 1 1 1 t 1 1 1 1 1 1 

14 74323 STRUT, Alternator support 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

15 ILW-31H.75 BOLT, 5/16-18 x 3/4 long, hex. hd. dr. 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

16 ISTD-690 WASHER, 13/16 OD x 3/8 ID x 1/16 

thick 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

17 AN6-14 BOLT, 3/8-24 x 1-37/64 long, hex. hd. 

dr, end 1 1 1 1 1 1 1 1 1 1 1 1 1 1 


thick 

unlunlunlunlunlunlunJunlunlunlunlunlunlunlunlun 

19 STD-872 NUT, 3/8-24 slotted 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

20 ISTD-713 PIN, Cotter, 3/32 dia. x 3/4 long 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

21 AN6-16 BOLT, 3/8-24 x 1-53/64 long, hex. hd. 

dr. end 1 1 1 

22 IAN6-13 BOLT, 3/8-24 x 1-7/16 long, hex, hd. 

dr. end 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

AC 

23 76534 SHIM, 1-1/8 OD x 13/‘32 ID x 1/64 

thick 


unlunlunlunlunlunlunlunlunlunlunlunlunlunlunlun 

thick unlunlun unlunlunlunlunlunlunlunlunlunlunlun 

25 ISTD-872 NUT, 3/8-24 slotted 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

26 ISTD-713 PIN, Cotter, 3/32 dia. x 3/4 long 1 t 1 1 1 1 1 1 1 1 1 1 1 1 1 



29 ISTD-8 WASHER, 1/4 plain 4 4 4 

30 STD-1BO WASHER, 1/4 shakeproof lock 3 3 3 

31 ISTD-1411 NUT, 1/4-20 plain 1 1 1 

32 LW-10729 LINK, Alternator adjusting 1 1 1 


34 ISTD-1858 BOLT, 5/16-18 x 29/32 long, hex. hd. 1 1 1 

35 ISTD-2084 BOLT, 1/4-20 x 1-3/4 long, hex. hd. 1 1 

36 ISTD-1215 BOLT, 1/4-20 x1-1/4 long, hex. hd. 2 2 

5-5

~L7AVCO LYCOMI~G 0-235 SERIES PARTS CATALOG 


ALTERNATOR MOUNTING AND ATTACHING PARTS (Cont.) 

0 


FIC. 

N 

PART 

C C C C C F F H J K K K L L M N N 

REF. DESCRIPTIOW A 

RUMBER L i 2 2 2 2 2 2 1 2 2 2 2 2 

E ACABCAABCAC A C 

25 L 

37 STD-8 WASHER, 1/4 plain 

12112 

38 STD-160 WASHER, 1/4 shakeproof lock 3 3 

39 STD-1411 NUT, 1/4-20 plain 1 1 

"’?1011 

:i 

i 

i3 

i\ 

13 

z 

\"I ’"i’ 

;i 

iI;Y 

7 

O 

1~ 

r 

8´• ~I 

7 

38 

8-31- 

14 

Is 

15 

re-36 

4-30 

7-36-2&341’ 

331 

347 7 i 

\Q 

2 

P 

7 

"s~as18 

23I,26 

24 ’20 

Figure 25. Alternator Mounting and Attaching Parts 

5-6

LYCO I~1ING 


FIO. 

PART 


GENERATOR AND ALTERNATOR ASSEMBLIES 

o 

N 

OUAWTITY PLR 

REF. DESCRIPTION A C C C C C F F H J K K K i M N N 

1 122222222222 22 

WUMBfR j 

B C A C A B C A R B C A C R C 

26 L 

1 68767 GENERATOR, 12V 35A (1101900) 1 1 1 

71744 GENERATOR, 12V 50A(1101915) 1 1 

2 78401* ALTERNATOR, 12V -40A, externally 

LW-14303* 

grounded (ALE-6406) 1 1 1 

ALTEANATOR, 12V -40A, externally 

grounded (ALE-6420) 1 

LW-14301* ALTERNATOR, 12V 40A,externally 

grounded (ALE-8420) 1 1 

78308’ ALTERNATOR, 12V 40A,externally 

grounded (ALE-8406) 1 1 1 1 1 

LW-12832’ ALTERNATOR ASSY., 12V 60A, 

internally grounded 1 1 1 

LW-12739 STRAP, Alternator ground 1 1 1 

LW-14319* 

ALTERNATOR, 24V -50A, externally 

grounded (ALT-8421) 1 

LW-14309" ALTERNATOR, i 2V 60A, externally 

grounded (ALY-8420) 1 1 1 1 1 

LW-14308" ALTERNATOR, 12V 60A, .less 

LW-14310^ 

thermocouples, externally grounded 

(ALY-8420) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 


grounded (ALY-6420) 1 1 1 

LW-12833* ALTERNATOR ASSY., 12V 60A, 

internally grounded 

1 

LW-12739 STRAP, Alternator ground 1 

LW-12834’ ALTERNATOR ASSY., 12V 60A, 

internally grounded 1 1 

LW-12739 STRAP, Alternator ground 1 1 

LW-14316" ALTERNATOR, 12V 70A, less 

LW-14317* 


(ALX-8421) 1 


grounded (ALX-8421) 1 

LW-14324* ALTERNATOR, 24V 70A, less 


ALU-8421) 1 

3.25:1 Ratio. 

5-7



d c 

Figure 26. (;enerator and Alternator Assemblies 

5-8

LYCOMING 



STARTER MOTOR AND ATTACHING PARTS 

FIG. 

OUAWTITY PER ASSEMBLY 

N 

PART 

REF. BESCRIPTIOW A 

WUMBER C C C C C F F H J K K K L L M N N 

1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 

BCACABCAABCAC 

27 

L 

1 76210 STARTER, 12 volt, 10/12 pitch pin/on 

(MZ-4204) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

69953 STARTER, 24 volt; 10/12 pitch pinion 

AC 

LW-16207 

(1109669) 1 1 

STARTER, 24 volt, 10/12 pitch pinion 

(MMU-4001) 1 1 1 

LW-15571 

STARTER, 12 volt, 12/14 pitch pinion 

(MZ-4222) 1 



4 LW-31-1.09 BOLT, 5/16-18 x 1-3/32 long, hex. hd. 4 

5 STD-2156 BOLT, 5/16-18 x 1-5/32 long, hex. hd. 1 

6 STD-1410 NUT, 5/16-18 plain 3 

7 LW-1 2083 SWITCH, Magnetic (SAZ-4201-E-1) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 

8 LW-1 2085 SWITCH, Magnetic (SAZ-4401C-1) 1 1 

5-9

,i~AVCO LYCOMII\IG 0-235 SERIES PARTS CATALOG 

I\ 

j 

´•dii -s 3 

I 

t 

~5 

j 

ir 

;Cc~ 

~i 

i 

C_C~ 

~L t;/ 

o 

u~ 

I’ 

\O 

Cj ~h 

a 

3--/ 

Figure 27. Starter Motor and Attaching Parts 

5-10



OIL SUMP AND INDUCTION SYSTEM 

OIL SUMP ASSEMBLY AND OIL SUCTION SCREEN 

O 

OUAISTITY PLR ASSEMBLY 

FIG. 

N 

PART 

C C C F F H J K K K L L M N N 

REF. DESCRIQTIOW Alcle 

1 2 2 2 2 2 2 2 2 22 2 2 2 

WUMRLR L BCACABCAABCAC AC 

28 L 

1 61374 SUMP ASSY., Oil f 1 1 1 1 1 

62318 SUMP ASSY., Oil 1 1 1 1 1 1 1 1 1 11 

2 61376 CONNECTION, I’ntake pipe, front 2 

3 61377 CONNECTION, Intake pipe, rear 2 

4. 25C-11 STUD, 1/4-20 x 1-3/8 long 4 

5 STD-551 PLUG, 1/2-14 NPT, So. hd. 1 

6 LW-13353 GASKET, Oil sump 1 

7 STD-8 WASHER, 1/4 plain 

8 STD-160 WASHER, 1/4lock, internal teeth 20 

9 STD-1204 BOLT, 1/4-20 x 15/16 long, hex, hd: 18 

10 STD-1411 NUT, 1/4-20 plain 14 

11 60820 GASKET, Oil suction tube flange 1 

12 61381 TUBE ASSY., Oil suction 1 

13 ISTD-1227 WASHER, 1/4 plain, copper 2 

14 ISTD-1433 BOLT, 1/4-20 x 1-1/2 long, hex. hd. 2 

15 STD-8 WASHER, 1/4 plain (Max. 4) un 

16 STD-1409 NUT, 1/4-20 slotted shear 2 

17 ISTD-68 PIN, Cotter, 1/16x1/21ong 2 

18 61378 SCREEN, Oil suction 1 

19 ISTD-1045 GASKET, 1-1/4 ID x 1-1/2 OD x 

3/32 annular 1 

20 61358 PLUG, 1-1/2x1-1/4-12, hex. hd. 1 

6-1

LYC~7 N1(NG 


13 

fe 

17 

B c- 

´•´•\i~ 

I- 

I 

3 

15 ii 

/-2 

i bI A$ii 95 

18 

Figure 28. Oil Sump Assembly and Oil Suction Screen 

6-2

~iAVCO LYCOMINE 

0-235 S´•ERIES PARTS CATALOG 


INTAKE PIPE ASSEMBLY 

O 

OUAWTITV PLR ASSEMBLV 

FIG. 1 

PART 

REF. OESCRIPTIOR AICICIC C C F F H J K K K L L M N N 

29 

WUMRLR 2 2 2 2 2 2 2 2 2 2 2 2 2 

L 

BCeCIBCnaBCAC A C 

1 LW-16728 PIPE, Intake cyls. nos. 1 2 2 

2 LW-16730 PIPE, Intake, cyl. no. 3 1 

3 LW-16729 PIPE, Intake, cyl. no. 4 1 

4 STD-1196 HOSE, 1-1/2 10 x 1-7/8 x 

1-1/2 long 4 

5 LW-1 5592-8-28 CLAMP, Hose 8 

6 71973 GASKET, 2 bolt flange, 1-7/8 ID 4 

7 74360 FLANGE, Intake pipe, upper 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 

LW-16731 FLANGE, Intake pipe, upper 4 4 



10 STD-1215 BOLT, 1/4-20 x 1-1/4 long, hex, hd. 8 

6-3

LYCOMING 


’ol 

r 

´•fi 

iI´• 

i 

‘‘E 

111 

lu 

j 

II 

II i/ 

f 

4_/\YZ/ 

Figure 29. Intake Pipe Assembly 

6-4

~AVCO LYCO NIINr= 

0-235 SLRIES PARTS CATALOG 


CARBURETOR ASSEMBLY 

O 


PART 

CCCCFFHJKKKLLMNN 

REF. DESCRIPTION Ale 

NUMBER 

1 1 2 2 2 2 2 2 2 2 2 2 2 1 2 2 


30 L 

1 60592 KET, Carburetor 1 

2 61547 CARBURETOR, Man/el-Schebler, MA-3A 

(10-3103-1) 1 1 1 1 1 

77939 CARBURETOR, Marvel-Schebler, MA-3PA 

(10-4978-1) 1 1 

77585 CARBURETOR, Marvel-Schebler, MA-3A 

(10-4953) 1 1 

LW-10619 

CARBURETOR, Marvel-Schebler, MA-3PA 

(10-5050) 1 1 1 1 1 

LW-13133 


(10-5126) 1 1 1 

LW-14016 


(10-5142) 

1 1 1 1 1 

LW-15496 

CARBURETOR, Man/el-Schebler, MA-3A 

(10-5199) 1 1 1 

LW-1 6073 


(10-5220) 1 1 1 1 

LW-16677 


(10-5257) 1 1 

LW-16907 


(10-5267) 

1 1 


4 STD-160 WASHER, 1/4lock, internal teeth 4 

5 STD-1411 NUT, 1/4-20 plain 4 

6-5

O LYCO IV1 I 1\1G 0-235 SLRIES PARTS CATALOG 

r-l 

0) 

~I 

c/ 

c, 

C, 

j-l c-iu-L ;-7 

-I-j 

1 i 

I 

I 

o 

u 

:.e 

-I´•J" 

Figure 30. Carburetor Assembly 

6-6

~7AVCO LYCOMING 



PRIMING SYSTEM 

O 

OOANTITY PER ASSEMRLY 

FIO. 

N 

PART 

C C C C F F H J K K K L L M N N 

REF. DESCRIPTION AIC 

1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 

WUMBER L BCACABCAABCAC AC 

31 L 

1 1102* PLUG, 1/8-27 NPT, Alien hd. 4 

2 LW-12098-1-170 TUBE ASSY., Primer cylinders, 

nos. 1&2 2 2 2 2 2 2 2 2 2 

3 LW-12098-1-116 TUBE ASSY., Primer cylinders, 

nos. 3&4 2 2 2 2 2 2 2 2 2 

4 LW-12098-0-100 TUBE ASSY., Primer, intermediate 2 2 2 2 2 2 2 2 2 

5 LW-16266-25-13 CLAMP 4 4 4 4 4 4 4 4 4 

6 71909 CLAMP, 1-1/2 ID with 1/4 die. offset 4 4 4 4 4 4 4 4 4 

7 STD-553 SCREW, No. 6-32 x 1/2 long, rd. hd. 4 4 4 4 4 4 4 4 4 

8 AN365-632A NUT, No. 6-32, self-locking 4 4 4 4 4 4 4 4 4 

9 STD-853 TEE, Union, 1/8 tube 3 3 3 3 3 3 3 3 3 

10 74225 NIPPLE ASSY., Primer 4 4 4 4 4 4 4 4 4 

Assemble in cylinder heads. 

6-7

i vCO iV1I I\IG 0-235 SERIES PARTS CATALOG 

‘‘I 

J 

to 

2 ~3 

10 

10 

r7-8 4 

49 

Figure 31. Priming System 

6-8

L~AVCO LYCOM ING 

SERIES PARTS CATALOG 

SECTION 7 

SERVICE KIT SECTION 

SEAL AND GASKET SET 

0-235 SERIES 

Part No. Part Name Qty. 

61499-1 SEAL AND GASKET SET 1 

STD-111 GASKET 1 

STD-208 SEAL, Oil 1 

STD-294 GASKET, Annular 2 


8313 GASKET, Vac. pump 

2 

60096 GASKET, Fuel pump 

1 

60592 GASKET, Carb. 1 

60820 GASKET, Oil suction tube Range 

1 

LW-18639 LOCKPLATE, Crankshaft gear 

1 

LW-14260 SEAL, Tech. shaft 1 

61173 GASKET, Oil press, hsg. 

1 

61183 GASKET, Accy. adapter 

1 

61523 CONTAINER 1 

61531 GASKET, Hydraulic valve 1 

62224 GASKET, Mag. adapter 

3 

LW-18661 SEAL, Shroud tube 16 

65321 GASKET, Exhaust Range 

4 

68315 GASKET, Accy. dr. adapter 

1 

LW-13353 GASKET, Oil sump 

1 

71973 GASKET, Intake Range 

4 

72053 GASKET, Gov. drive 1 

72059 GASKET 1 

72078 LOCKPLATE, Cam gear 

2 

72091 RING, Oil seal 8 

73383 LOCKPLATE 1 

73817 LOCKPLATE, Camshaft idler gear shaft 2 

73818 GASKET, Accy. hsg. 

1 

74065 RING, Oil level gage seal 1 


75906 GASKET, Rocker box cover 4 

76940 SEAL, Crankshaft oil 1 

LW-13792 SEAL, Crankshaft oil 1 

LW-12681 GASKET, Mag. 

2 

LW-12795 GASKET 1 

LW-11632 RING, Oil seal 6 

62869 RING, Cyl. base 4 

LW-12040 TOP OVERHAUL GASKET SET 1 

62869 SEAL, Cylinder base 4 


71973 GASKET, Intake, 2 bolt Range 4 


7-1

l~AVCO LYCC3M I NG 

0-235 SERI~S PARTS CATALOG 

SECTION 7 


CYLINDER, PISTON AND RING ASSY. 

O-235-C1, -C1B, -C2A, -C2C, -H2C 

Part No. Part Name &ty. 

75805 CYLINDER, PISTON AND RING ASSY. 1 

LW-16701 CYLINDER AND HEAD ASSY. 1 

66429 VALVE, Intake 1 

66531 VALVE, Exhaust 1 

LW-13320 SEAT, Valve spring, inner spring 

2 

61252 SEAT, Valve spring, outer spring 

2 

LW-11800 SPRING, Valve, outer 2 

LW-11795 SPRING, Valve, auxiliary 

2 

LW-10077 SEAT, Valve spring 

2 

60009 KEY, Valve 4 

60831 ROCKER ASSY., Valve 2 

LW-13790 SHAFT, Valve rocker 1 

1102 PLUG,.125 pipe x .375 long (socket) 1 


61247 COVER, Rocker box 1 

STD-1925 SCREW,.250-20 x .63 long fill, head, self-locking 6 

73807 SCREW, Valve adjusting 

2 

STD-587 NUT,.5625-18 x .16 thick 2 

71195 BOX, Set-up 

73851 PISTON 

60827 PIN, Piston 1 

60828 PLUG, Piston pin 

2 

LW-13672 RING, Piston, top compression 

1 

LW-13658 

RING, Piston, scraper 

1 

62869 RING, Oil seal (cylinder base) 1 


LW-12892 BUTTON, Thrust 2 

STD-1215 

BOLT 

2 

73806 PUSH ROD ASSY. 2 

LW-16867 

RING, Oil regulator 

1 

1 

1 

7-2

LYCOMING 


SECTION 7 



0-235-F2A,-F2B,-J2A 


LW-12591 CYLINDER, PISTON AND RING ASSEMBLY 1 

STD-587 NUT, 9116-18 x 5/32 thick 2 

STD-1215 BOLT 2 

STD-1925 SCREW, 1/4-20 x 5/8 long, fill, hd. 6 

1102 PLUG, 1/8 pipe x 3/8 long, socket 1 





LW-13320 SEAT, Valve spring, inner 2 

61252 SEAT, Valve spring, outer 2 



71195 BOX, Set-up 1 

73807 SCREW, Valve adjusting 2 


LW-13445 PIN, Piston 1 

78862 RING, Piston compression 2 

78864 RING, Piston, oil regulator 1 

LW-10077 SEAT, Valve spring 2 

LW-11621 PISTON 1 

LW-11625 PLUG, Piston pin 2 

LW-11633 CYLINDER ASSY., Nitrided 1 

LW-11634 VALVE, Exhaust 1 

LW-11795 SPRING, Valve, auxiliary 2 


LW-11901 VALVE, Intake 1 

LW-12892 THRUST BU~M’ON 2 

7-3

,-~AVCO LYCOMING 


SECTION 7 



O-235-K2A, -K2B, -K2C, -L2A, -L2C, -M1 



STD-587 NUT, 9116-18 x 5/32 thick 2 


STD-1925 SCREW, 1/4-20 x 5/8 long, fill. hd. 6 






LW-13320 SEAT, Valve spring, inner spring 

2 

61252 SEAT, Valve spring, outer spring 

2 

62869 RING, Oil seal, cylinder base 1 


71195 BOX, Set-up 

73807 SCREW, Valve adjusting 

2 


78862 RING, Piston compression 

2 

78864 RING, Piston, oil regulating 

1 

LW-10077 SEAT, Valve spring 

2 

LW-11625 

PLUG, Piston pin 

2 



LW-11795 SPRING, Valve auxiliary 

2 

LW-11800 SPRING, Valve outer 2 




LW-12892 THRUST BUTTON 2 

1 

7-4

~AVCO LYCO N1 ING 0-235 SERIES PARTS CATALOG 

SECTION 7 



O-235-C1, -C1B, -C2A, -C2C, -H2C 

Part No. Part Name 

Qty. 



60037 VALVE, Intake 1 

60072 RING, Piston, scraper 1 


60827 PIN, Piston 1 

60828 PLUG, Piston pin 2 


LW-16867 RING, Piston, oil regulating 1 


61251 SEAT, Valve spring, inner 2 


62869 RING, Oil seal, cylinder base 1 


68196 RING, Piston, compression 2 



73851 PISTON 1 


73806 PUSH ROD ASSY. 2 

STD-587 NUT, 9116-18 x 5/32 thick 2 







LW-12986 CYLINDER ASSY., Plain 1 


7-5

O LYCO IV1 ING 0-235 SERIES PARTS CA*TALOG 

SECTION 7 



O-235-N2C 



STD-587 NUT, 9/16-18 x 5/32 thick 2 



























7-6

O LYCO IVI ING 0-235 SERILS PARTS CATALOG 

NUMERICAL INDEX 

PART NO. PART NAME PAGE NO. PART NO. PART NAME PAGE NO. 

AN365-632A Nut 4-5 LW-12892 Thrust Button 3-5 

AN365-632A Nut 6-7 LW-12947 Crankshaft Assy. 1-5 

AN500A-416-10 Screw 4-5 LW-12986 Cylinderand HeadAssy. 3-3 

AN500-416-12 Screw 4-5 LW-12999 Plate 2-13 

AN6-13 Bolt 5-5 LW-13039 Bracket 5-5 

AN6-14 Bolt 5-5 LW-13133 Carburetor 6-5 

AN6-16 Bolt 5-5 LW-13215 Oil Filter 2-13 

AN6-21 Bolt 1-11 LW-13257 Crankcase Assy. 1-1 

AN6-34A Bolt 1-11 LW-13282 Crankcase Assy. 1-1 

AN777-8D Elbow 2-13 LW-13303 Hook 3´•9 

AN816-8 Nipple 2-13 LW-13304 Baffle Assy. 3-9 

AN901-8A Gasket 2-13 LW-13320 Seat 3-7 

LW-10077 Seat 3-7 LW-13353 Gasket 6-1 

LW-10179 Regulator 5-1 LW-13445 Pin 3-1 

LW-10185 Regulator 5-1 LW-13623 Piston 3-1 

LW-10619 Carburetor 6-5 LW-13675 Support Assy. 1-5 

LW-10729 Link 5-5 LW-13775 Impeller Assy. 2-3 

LW-11621 Piston 3-1 LW-13790 Shaft 3-5 

LW-11622 Stud 1-1 LW-13792 Seal 1-7 

LW-11623 Stud 1-1 LW-13884 Bearing 1-7 

LW-11625 Plug 3-1 LW-13923 Bushing 3-1 

LW-11626 Guide 3-3 LW-14016 Carburetor 6-5 

LW-11631 Crankcase Assy. 1-1 LW-14057 Clip 4-4 

LW-11632 Ring 1-7 LW-14057 Clip 4-5 

LW-11633 CylinderandHead Assy. 3-3 LW-14060 Clip 4-4 

LW-11634 Valve 3-7 LW-14060 Clip 4-5 

LW-11795 Spring 3-7 LW-14260 Seal 1-1 


LW-11900 Seat 3-3 LW-14301 Alternator 5-7 

LW-11901 Valve 3-7 LW-14303 Alternator 5-7 

LW-12044 Housing Assy. 2-1 LW-14308 Alternator 5-7 

LW-12083 Switch 5-9 LW-14309 Alternator 5-7 

LW-12085 Switch 5-9 LW-14310 Alternator 5-7 

LW-12098-0-100 Tube Assy. 6-7 LW-14316 Alternator 5-7 



LW-12186 Nut 3-1 LW-14324 Alternator 5-7 

LW-12681 Gasket 4-1 LW-14746 Gage 1-3 

LW-12681 Gasket 4-4 LW-14752 Gage 1´•3 

LW-12693 Crankshaft Assy. 1-5 LW-14781 Gage 1-3 

LW-12697 Crankshaft Assy. 1-5 LW-14792 Gage 1-3 

LW-12699 Crankshaft Assy. 1-5 LW-15496 Carburetor 6-5 

LW-12706 Adapter 4-1 LW-15571 Starter 6-9 

LW-12706 Adapter 4-3 LW-15592-5-05 Clamp 3-9 

LW-12739 Strap 5-7 LW-15592-8-28 Clamp 6-3 

LW-12789 Tube Assy. 1-3 LW-15635 Mag. Harness Assy. 4-3 

LW-12795 Gasket 2-13 LW-15636 Magneto 4-3 

LW-12832 Alternator Assy. 5-7 LW-15637 Mag. Harness Assy. 4-3 

LW-12833 Alternator Assy. 5-7 LW-15638 Magneto 4-3 

LW-12834 Alternator Assy. 5-7 LW-157208 Kit Assy. 4-1 

8-1

L~I7AVCO LYCOMING 0-235 SERIES PARTS CATALOG 

NUMERICAL INDEX (Cont.) 


LW-157209 Kit Assy. 4-1 LW-51360-58 Magneto 4-1 

LW-15866 Harness Assy. 4-3 LW-52305-1 Kit Assy. 4-1 

LW-15868 Harness Assy. 4-3 LW-M-2375 Plate 4-5 

LW-15896 Regulator 5-1 LW-M-2403 Harness Assy. 4-5 

LW-16011 Housing Assy. 2-1 LW-M-2404 Harness Assy. 4-5 

LW-16073 Carburetor 6-5 LW-M-2415 Harness Assy. 4-5 

LW-16207 Starter 5-9 LW-M-2416 Harness Assy. 4-5 

LW-16266-25-13 Clamp 6-7 M-1985-48 Lead Assy. 4-5 

LW-16266-25-38 Clamp 2-5 M-1985-72 Lead Assy. 4-5 

LW-16266-25-50 Clamp 4-5 MS20822-6 Elbow 2-5 

LW-163005-2 Magneto 4-1 STD-8 Washer 1-1 



LW-16354 Crankcase Assy. 1-1 STD-8 Washer 2-11 

LW-16577 Support Assy. 1-5 STD-8 Washer 2-13 

LW-16587 Mag. Harness Assy. 4-3 STD-8 Washer 4-5 




LW-16594 Magneto 4-3 STD-8 Washer 6-1 

LW-16595 Magneto 4-3 STD-8 Washer 6-3 


LW-16677 Carburetor 6-5 STD-33 Washer 1-5 


LW-16699 Seat 3-3 STD-33 Washer 2-9 

LW-1 j701 Cylinder Head Assy. 3-3 STD-35 Washer 2-3 

LW-16703 Cylinder Head Assy. 3-3 STD-35 Washer 2-5 

LW-16704 Cylinder Head Assy. 3-3 STD-35 Washer 2-7 

LW-16728 Pipe 6-3 STD-35 Washer 3-5 

LW-16729 Pipe 6-3 STD-35 Washer 5-3 

LW-16730 Pipe 6-3. STD-35 Washer 5-5 

LW-16731 Flange 6-3 STD-35 Washer 5-9 

LW-16867 Ring 3-1 STD-43 Nut 1-1 

LW-16907 Carburetor 6-5 STD-68 Pin 1-1 

LW-18290 Cylinder Head Assy. 3-3 STD-68 Pin 5-3 

LW-18661 Seal 3-7 STD-68 Pin 6-1 

LW-18694 Support Assy. 1-5 STD-111 Gasket 2-13 

LW-18697 Crankshaft Assy. 1-5 STD-131 Screw 1-1 

LW-18735 Crankcase Assy. 1-1 STD-160 Washer 1-1 


LW-31-1.09 Bolt 5-9 STD-160 Washer 2-3 

LW-31H.75 Bolt 5-3 STD-160 Washer 2-11 

LW-31H.75 Bolt 5-5 STD-160 Washer 2-13 

LW-38-.75 Bolt 2-9 STD-160 Washer 4-5 







8-2





STD-208 Seal 2-11 STD-1227 Washer 6-1 

STD-251 Washer 3-9 STD-1350 Plug 2-13 

STD-294 Gasket 2-13 STD-1409 Nut 1-11 

STD-406 Dowel 1-3 STD-1409 Nut 6-1 

STD-425 Washer 1-7 STD-1410 Nut 2-7 








STD-551 Plug 6-1 STD-1411 Nut 2-13 

STD-553 Screw 4-5 STD-1411 Nut 4-5 

STD-553 Screw 6-7 STD-1411 Nut 5-3 


STD-587 Nut 3-5 STD-1411 Nut 5-6 

STD-596 Nut 1-11 STD-1411 Nut 6-1 


STD-665 Screw 3-9 STD-1414 Bolt 1-11 

STD-678 Washer 1-11 STD-1414 Bolt 5-3 


STD-684 Nipple 3-9 STD-1416 Bolt 1-11 



STD-700 Elbow 3-3 STD-1420 Nut 2-3 

STD-705 Bolt 1-9 STD-1420 Nut 5-3 

STD-713 Pin 5-5 STD-1433 Bolt 6-1 

STD-761 Cotter Pin 4-4 STD-1646 Bolt 2-3 

STD-783 Plug 2-1 STD-1727 Washer 4-1 



STD-847 Screw 1-5 STD-1727 Washer 5-5 

STD-853 Tee 6-7 STD-1774 Pin 2-7 

STD-872 Nut 1-11 STD-1774 Pin 2-11 

STD-872 Nut 5-5 STD-1834 Bolt 5-3 

STD-1045 Gasket 1-7 STD-1835 Bolt 5-3 

STD-1045 Gasket 6-1 STd-1838 Bolt 2-5 

STD-1065 Dowel 1-5 STD-1838 Bolt 5-5 

STD-1111 Elbow 1-1 STD-1856 Screw 2-13 

STD-1196 Hose 6-3 STD-1858 Bolt 5-5 

STD-1198 Bolt 1-5 STD-1874 Screw 4-5 

STD-1204 Bolt 2-3 STD-1875 Bolt 1-1 

STD-1204 Bolt 6-1 STD-1882 Screw 2-9 

STD-1211 Plug 1-5 STD-1885 Bolt 2-3 

STD-1214 Screw 1-5 STD-1925 Screw 3-5 

STD-1215 Bolt 5-3 STD-1930 Hose 2-5 



STD-1221 Ring 2-7 STD-2084 Bolt 5-5 

8-3

?i~AVCO L~COMING 0-235 SERIES PARTS CATALOG 



STD-2106 Nut 3-5 60928 Tube Assy. 3-9 

STD-P 156 Bolt 5-9 61084 Spring 1-7 

STD-2180 Hose 3-9 61098 Adapter Assy. 2-11 

25C-10 Stud 2-13 61151 Shaft 1-9 

25C-ll Stud 6-1 61155 Gear 1-6 

25(=-22 Stud 2-1 61156 Lockplate 1-5 

31C-12 Stud 1-1 61163 Gear 4-1 

31C-12 Stud 2-1 61163 Gear a-3 

31C-12 Stud 3-3 61173 Gasket 2´•13 

31C-13 Stud 1-1 61174 Shaft 2-3 

31C-19 Stud 2-1 61175 Adapter 2-1 

31CD-17 Stud 2-1 61182 Stud 1-1 

38-12 Stud 1-1 61183 Gasket 2-11 

38-13 Stud 1-1 61227 Lever 1-1 

44-13 Stud 1-1 61247 Cover 3-6 

383-B Nut 3-5 61252 Seat 3-7 

1028-B Ball 1-7 61258 Seat 3-3 

1102 Plug 

1-1 61269 Flange 3-5 

1102 Plug 2-1 61260 Flange 3-6 

1102 Plug 2-7 61368 Plug 6-1 

1102 Plug 6-7 61374 Sump Assy. 6-1 

1182-B3 Spark Plug 4-7 61376 Connection 6-1 

1182-B6 Spark Plug 4-7 61377 Connection 6-1 

1182-B7 Spark Plug 4-7 61378 Screen 6-1 

1182-53 Spark Plug 4-7 61381 Tube Assy. 6-1 

1182-P3 Spark Plug 4-7 61400 Stud 2´•1 

8313 Gasket 2-11 61510 Plug 1-5 

45530 Ring 1-9 61520 Bearing 1-7 

45688 Flange 

1-5 61531 Gasket 1-1 

60009 Key 3-7 61533 Bearing 1-7 

60037 Valve 3-7 61544 Plunger 1-9 

60072 Ring 3-1 61547 Carburetor 6-6 

60096 Gasket 2-9 61554 Cover 1-1 

60337 Seat 3-3 61555 Plug 1-I 

60398 Bushing 3-5 61583 Cover 1-1 

60430 Cover 2-11 61584 Valve 1-1 

60592 Gasket 6-5 61665 Gear 4-1 

60733 Shim 5-3 61665 Gear 4-3 

60746 Impeller 

2-3 61681 Guide 3-3 

60803 Strap 1-11 62219 Gage 1-3 

60814 Bushing 1-5 62224 Gasket 4-1 

60820 Gasket 6-1 62224 Gasket 4-3 

60821 Tube Assy. 3-9 62318 Sump Assy. 6-1 

60827 Pin 3-1 62415 Plunger 2-13 

60828 Plug 3-1 62417 Plug 2-13 

60831 Rocker Assy. 3-5 62817 Screen Assy. 2-13 

60882 Gear 1-5 62833 Regulator 6-1 

60886 Belt 5-1 62869 Ring 3-5 

60890 Tube Assy. 3-9 65098 Cover 2-9 

60903 Tube 3-7 66321 Gasket 3-5 

8-4

LYCOMING 

0-235 SERILS PARTS CATALOG 



65614 Plug 3-9 72842 Plug 1-3 

66531 Valve 3-7 72844 Plug 1-3 

66796 Insert 3-3 72970 Gear Assy. 2-11 

67556 Stud 2-7 73206 Housing Assy. 2-1 

68196 Ring 3-1 73259 Housing Assy. 2-1 

68315 Gasket 2-7 73383 Lockplate 5-5 

68317 Shaftgear 2-7 73757 Bushing 1-5 

68593 Spacer 2-11 73806 Rod Assy. 3-5 

68763 Bearing 1-7 73807 Screw 3-5 

68767 Generator 5-7 73817 Lockplate 1-9 

68790 Housing Assy. 2-1 73818 Gasket 2-1 

68792 Housing Assy. 2-1 73851 Piston 3-1 

68796 Housing Assy. 2-1 74065 Ring 1-3 

68798 Housing Assy. 2-1 74068 Ring 1-3 

68800 Housing Assy. 2-1 74070 Elbow 2-5 

68802 Housing Assy. 2-1 74124 Stud 1-1 

68942 Support Assy. 1-5 74217 Ring 1-3 

68974 Housing 2-13 74225 Nipple Assy. 6-7 

69113 Bracket 5-3 74314 Plug 1-3 

69340 Support Assy. 1-5 74360 Flange 6-3 

69373 Bearing 3-1 74628 Housing Assy. 2-1 

69436 Spring 2-13 74996 Gear Assy. 1-9 

69452 Bracket 5-3 75072 Gear Assy. 1-9 

69510 Housing 2-13 75153 Adapter Assy. 2´•7 

69796 Dowel 1-1 75165 Clip 2-5 

69951 Strut 5-3 75167 Tube Assy. 2-5 

69953 Starter 5-9 75246 Fuel Pump 2-9 

71032 Bushing 1-7 75380 Link 5-6 

71105 Body 1-7 75706 Camshaft Assy. 1-6 

71596 Washer 2-7 75708 Shaft Assy. 1-9 

71596 Washer 2-11 75735 Tube 1-3 

71611 Retainer 3-9 75736 Tube 1-3 

71620 Bolt 2-13 75767 Tube 1-3 

71623 Washer 2-13 75906 Gasket 3-5 

71744 Generator 5-7 75944 Valve Assy. 2-13 

71746 Regulator 5-1 75965 Clamp 4-1 

71828 Cylinder Head Assy. 3-3 76026 Belt 6-1 

71909 Clamp 4-5 76028 Link 6-3 

71909 Clamp 6-7 76124 Support Assy. 1-5 

71973 Gasket 6-3 76210 starter 5-9 

72053 Gasket 2-7 76529 Plug 1-7 

72059 Gasket 1-3 76534 Shim 5-5 

72091 Ring 1-7 76734 Zip Strap 4-5 

72205 Regulator 5-1 76923-48870-63 Lead Assy. 4-5 

72220 Gasket 1-3 76923-72890-63 Lead Assy. 4-5 

72312 Ring 1-3 76944 Support Assy. 1-5 

72378 Cover 2-7 76961 C~mp 4-4 

72495 Gear 4-1 77309 Bushing 1-9 

72496 Housing Assy. 2-1 77527 Extension 1-3 

72566 Gear 1-5 77585 Carburetor 6´•5 

8-5

~I/IAVCO LYCO rVI I NG 0-235 SERILS PARTS CATALOG 



77611 Gasket 3-5 78158 Bracket 5-5 

77743 Harness Assy. 4-3 78213 Crankcase Assy. 1-1 

77745 Harness Assy. 4-3 78214 Crankcase Assy. 1-1 

77808 Valve Assy. 1-7 78308 Alternator 5-7 

77852 Base Assy. 2-13 78368 Pin 1-9 

77853 Housing Assy. 2-13 78401 Alternator 5-7 

77939 Carburetor 6-5 78426 Support Assy. 1-5 

78027 Bolt 3-1 78531 Body Assy. 2-3 

78030 Rod Assy. 3-1 78862 Ring 3-1 

78059 Relay 5-1 78864 Ring 3-1 

8-6

0-235-P2A 

Parts Catalog

PI~RTS 

Pc-30 -1 

LVCONIINO 

0-235-P2A. 

II 

e~l 

I 

,D 

77 

~i Ililllil 

PRICE ~j5.00 AUGUST 1985 

~AVCO LYCOMING WILLIAMSPORT DIVISION 

652 Oliver Street, Williemsport, Pennsylvania 17701 

ooAvco LYCOMING ENGINE GROUP

RECORD OF REVISIONS 

MFG REV 

O-235-P2A 

NO DESCRIPTION ISSUEDATE ATPREVDATE INSERTEDBY

RECORD OF TEMPORARY REVISIONS 

p ATP REV INSERT DATE REV REMOVE 

REV NO DESCRIPTION ISSUE DATE DATE BY REMOVED INCOR BY


0-235-P2A PARTS CATALOG 

INTRODUCTION 

This illustrated parts catalog contains a complete parts listing for the Avco Lycoming O-235-P2A model aircraft 

engines. 

Major assembly and sub-assembly parts of the engines are listed in the Group Assembly sections in the 

general sequence of engine build up. 

A Service Kits section and Oversize and Undersize Parts List are included to aid in ordering parts as necessary 

during overhaul. 

The Numerical Index is provided for convenience in finding parts when only the part number is known. 

Parts coverage of Vendor Accessories used on Avco Lycoming engines may be found in the appropriate Vendor’s 

Parts Catalog. A list of these publications appear in the latest edition of Service Letter No. L114. 

NOTE 

The illustrations, pictures and drawings shown in this publication are typical of the subject matter they portray. 

This catalog, when used in conjunction with the appropriateoverhaul manual, shall be used forparts identification 

only. Under no circumstances shall this catalog be used as an assembly or installation document. 

Any reference in this document to a supplierslparts manufacturers’ product, by name, trademark, part 

number or other description is solely for the purposes of identification and does not indicate or infer that Avco 

Lycoming accepts responsibility for quality control andlor airworthiness of parts which do not pass through the 

Avco Lycoming quality control system. 

SERVICE BULLETINS, INSTRUCTIONS AND LETTERS 

Although the information contained in this parts catalog is up-to-date at time of publication, users are urged to 

keep abreast of later information through all Avco Lycoming distributors or from the factory by subscription. 

Consult the latest edition of Service Letter No. L114 for subscription information. 

HOW TO ORDER PARTS 

In ordering parts for your engine, observe the following instructions which will expedite shipment of correct 

parts required without delay. 

a. Always specify the model and serial number of your engine. 

b. Always specify Part Number, Nomenclature and quantity required.

~nA\’CO LYCONI ING 


TABLE OF CONTENTS 

SECTION 

PAGE 

Introduction 

Table of Contents 

Oversize and Undersize Parts List 

i 

m 

1. CRANKCASE, CRANKSHAFT AND CAMSHAFT GROUP 

CranltcaseAssembly 

Oil Level Gage Assembly 

Crankshaft, Camshaft and Related Parts 1-5 

Crankcase Related Parts 

Crankshaft Idler Gears andTachometer Shaft 

´•1-9 

CrankcaseAttaching Parts 

´•1-11 

2. ACCESSORY HOUSING AND RELATED PARTS 

Accessory HousingAssembly 

2-1 

Oil Pump Assembly and Accessory HousingAttaching Parts 2-3 

Propeller GovernorOil Line 2-5 

Propeller Governor Drive and Cover 2-7 

Fuel Pump Assembly and Attaching Parts 2-9 

Vacuum Pump Drive andCover 2-10 

Oil FilterAssembly andOil Cooler BypassValve 

2-11 

3. CYLINDER, PISTON AND VALVE TRAIN 

Connecting Rods, Pistons and Ring Assemblies 3-1 

Cylinder Assembly 

Cylinder Related Parts 

Valve Assembly 

Cylinder Head Drain Tubes and Intercylinder Cooling Baffles 3-9 

4. IGNITION SYSTEM 

Magnetos, Drives, Harnesses and Spark Plugs 4-1 

5. ELECTRICAL COMPONENTS 

Starter Motor and Attaching Parts 5-1 

6. OIL SUMP AND INDUCTION SYSTEM 

Oil Sump Assembly andOil Suction Screen 6-1 

Intake Pipe Assembly 

Carburetor Assembly 

Priming System 

7. SERVICE KIT SECTION 

Seal and Gasket Set 

Cylinder, Pistonand RingAssembly 7-2 

8. NUMERICALINDEX

LYCOMING 

0-235-P2~ PARTS CATALOG 

Oversize and Undersize Parts Listing 

PART NO. DESCRIPTION OVERSIZE UNDERSlZE 

60814 BUSHING X X X X 

P02 P05 P10 P15 P20 P30 P40 P50 M03 N06 NI10 

.002 .005 .010 .015 .020 .030 .040 .050 .003 .006 .010 

61681 GUIDE X X X X X 

66796 INSERT X 

68763 BEARING 

X X X 

69373 BEARING X X X X 

69796 DOWEL X 

73757 BUSHING X X X X 

LW-11626 GUIDE X X X X X 

LW-11900 SEAT X X X 

LW-13792 

SEAL 

LW-13884 BEARING X X X X 

LW-16699 SEAT X X X 

STD-1065 DOWEL X X X X 

In addition to the above, studs are available in P01, P02, P03, P05, P07, P1D P12. 

NOTE 

When ordering oversize and undersize parts, be sure to specify the required oversize and undersize dimension along with the proper 

part number. For example, to order bearing LW-13884 in .003 undersize, order part number LW-13884-M3. Oversize code letter is 

’’P’’ while undersize code letter is ’’M’’. These letters are then followed by the number designating the size in thousandths of an 

inch.

I vr.ORnlNG 0-235-P2A PARTS CATALOG 


CRANKCASE ASSEMBLY 

FIG. 

QUANTITY 

REF. PART PER 

1 NUMBER DESCRIPTION ASSEMBLY 

1 LW-16354* CRANKCASE ASSEMBLY 1 

2 STD-557 DOWEL, 1/2 dia. x 19/32 long, hollow 2 

3 LW-11623 STUD, 7/16-20 x 10-7/16 long 2 

4 LW-11622 STUD, 7/16-14 x 9-25/32 long 4 

5 44-13 STUD, 7/16-14 x 1-5/8 long 8 

6 38-13 STUD, 3/8-16 x 1-5/8 long 16 

7 1102 PLUG, 1/8-27 NPT, Alien 3 

8 STD-514 DOWEL, 5/16 dia. x1/2 long 2 

9 69796 DOWEL, Crankshaft bearing 2 

10 STD-111 ELBOW, 3/4 pipe hose (900) 1 

11 310-12 STUD, 5/16-18 x 1-1/2 long 4 

Used with variable pitch prop. 

1-1

L~AVCO LYCOMING 

O-235-P2A PARTS CATALOG 

/--10 

3 

clc_ i,qr,:/ 

11 k 

7. i.: 

’,a ~1 -:~f.l 

r~ 0!~ Q 

\r 

8 i. 

gBli\‘~v 

/II, 

cl 

~F 

8jcil,)i 

f 

ji- 

7\ 

1, 

4 

I 

~j 

5 )-3 

5 

O 

i\ 

Figure 1. CRANKCASE ASSEMBLY 

1-2

d~AVCO LYCOMING 

0-235-P2APARTS ~ATALOG 


OIL LEVEL GAGE ASSEMBLY 

FIG. 

QUANTITY 

REF. PART PER 


1 75767 TUBE, Oil level gage 

1 

2 72059 GASKET, Oil level gage 

1 

3 74065 RING, Oil level gage seal 1 

4 LW-14781 GAGE ASSY., Oil level 1 

5 72844 PLUG, Oil level gage 

1 

1-3

Lk7AVCC~ I VCOMING O-235-P2A PARTS CATALOG 

i 

/r 

I~I a; ;I 

i" 

la 

~I ---3_ 

´•-~i3 

J/´• 

Figure 2. OIL LEVEL GAGE ASSEMBLY

I VCOIVIING 



CRANKSHAFT, CAMSHAFT AND RELATED PARTS 

FIG. 

QUANTITY 

REF. PART PER 


1 LW-12695* CRANKSHAFT ASSEMBLY f 

2 STD-1211 PLUG, 2.00 dia. expansion 1 

3 STD-1065 DOWEL, Stepped, 19/64 x 1/4 dia. x 35/64 long 1 

4 61510 PLUG, 1-3/4 O.D. 1 

5 73757 BUSHING, Propeller flange tinder) 1 

6 60814 BUSHING, Propeller 5 

7 75706 CAMSHAFT 1 

8 61155 GEAR, Crankshaft 1 

9 LW-18639 LOCKPLATE, Crankshaft gear 1 

10 STD-2213 SCREW, 5/16-24 x 1.00 long 1 

11 LW-13675 SUPPORT ASSY., Starter ring gear, 10/12 pitch 3.25:1 drive 1 

12 60882 GEAR, Starter ring, 10/12 pitch 1 


1-5



4 

NO. 1 

a 

O 

6 

C/-’"7 

INDEX 

t --tt~fOY 6 

a 

Figure 3, CRANKSHAFT, CAMSHAFT AND RELATED PARTS 

1-6

~nA\’CO LYCON1ING 



CRANKCASE RELATED PARTS 

FIG. 

QUANTITY 

REF. PART PER 


1 10288 BALL, 11/16 dia. 1 

2 61084 SPRING, Oil pressure relief valve 1 

3 STD-425 WASHER, No. 10 plain (max. 9) AR 

4 STD-1045 GASKET, 1-1/4 I.D, x 1-1/2 O.D, x 3/32 annular 1 

5 76529 PLUG, Oil relief valve 1 

6 68763* BEARING, Crankshaft (use in pairs) 4 

7 LW-1 3884* BEARING, Crankshaft, front 2 

8 LW-13792 SEAL, Crankshaft oil 1 

9 72091 RING, Oil seal 23/64 I.D. x 7/64 dia. section 8 

10 71105 BODY, Tappet 8 


1-7

LYCOMING 


j 

io 

~"7 

~Ii 

a~- 

r 

y"l, 

C"i 

7 

C 

I 

~ca 

iC~1’ 

1/-" 

i! 7 

a~; 

II 

r 

kY 

‘;CC\ 

1 

5 

Figure 4. CRANKCASE RELATED PARTS 

1-8

I VCONIING 0-235-P2A PARTS CATALOG 

CRANKCASE, ORANKSHAFT AND CAMSHAFT GROUP 

CRANKSHAFT IDLER GEARS AND TACHOMETER SHAFT 

FIG. 

QUANTITY 

REF. PART PER 


1 61544 PLUNGER, Fuel pump, long 1 

2 74996 GEAR ASSY., Crankshaft idler 1 

3 77309 BUSHING, Crankshaft idler gear 1 

4 75072 GEAR ASSY., Crankshaft idler 1 

5 77309 BUSHING, Crankshaft idler gear 1 

6 75708 SHAFT ASSY., Tachometer 1 

7 LW-18667 PIN, 3/16 x 2-5/16 long 1 

8 45530 RING, Oil pump shaft retaining 1 

9 61151 SHAFT, Crankshaft idler gear 2 

10 173817 LOCKPLATE, 1/4 bolt, 1-3/4 spacing 2 

11 STD-705 BOLT, 1/4-20 x 11/16 long 4 

1-9

L~AVeO LYCOMING 


P- 

.r 

13’"-- 

19\.--.-: 

8 

,o? 

4-\ 

1? 

i 

i 

I 

b 

3 

5\\\\ \i/ 

h 

cji;’ 

ii 

I 

r3 

j 

i~3,ii 

a 

11 

10 

Figure 5. CRANKSHAFT IDLER GEARS AND TACHOMETER SHAFT 

1-10

LMAVCO LYCOMING 

0-235-P2A PARTS SATALOG 


CRANKCASE ATTACHING PARTS 

FIO. 

QUANTITY 

REF. PART PER 


1 LW-25-1.50 BOLT, 1/4-20 x 1-1/2 long, hex. head 8 


3 60803 STRAP, Lifting 1 

4 LW-25-1.75 BOLT, 1/4-20 x 1-3/4 long, hex. head 1 

5 AN6-21 BOLT, 3/8-24 x 13/64 long, hex. head drive 1 

6 STD-160 WASHER, 1/4 lock, internal lock 9 

7 STD-1411 NUT, 1/4-20 plain 9 

8 LW-25S1.50 BOLT, 1/4-20 x 1-1/2 long, dr. end 3 

9 STD-8 WASHER, 1/4 plain (Max. 9) AR 

10 ISTD-1409 NUT, 1/4-20 slotted shear 3 


12 ISTD-872 NUT, 3/8-24, slotted 1 

13 IAN6-34A BOLT, 3/8-24 x 37/64 long, hex, hd. 2 


15 ISTD-678 WASHER, 3/8 lock, internal teeth 2 

16 ISTD-596 NUT, 3/8-24 plain 2 

1-11

~AVeC) LYCOM ING O-235-P2A PARTS CATALOG 

3-\ 

1,2,6,77n 4,67 ,1, 2,8.7 ~5,11.12 

1,2,6,7 

O 

0 0 i3 

O 

O 

13,14,15,16 

O 

O 

O 8 O 

13,14~15,16 

6 ,7,8,9 

1,6.7,9 

1 ,2,6 ~7--V 

UL 

6, Q rl 6 

Figure 6. CRANKCASE ATTACHING PARTS 

1-12

L~AVCO LYCOMING 



ACCESSORY HOUSING ASSEMBLY 

FIG. 

QUANTITY 

REF. PART PER 


1 73818 GASKET, Accessory housing 1 

2 LW-12044 HOUSING ASSEMBLY, Accessory 1 

3 310-12 STUD, 5/16-18 x 1-1/2 long 6 

4 310-19 STUD, 5/16-18 x 2-3/8 long 2 

5 3100-17 STUD, 5/16-18 x 2-1/8 long, drilled 3 

6 1102 PLUG, 1/8-27 NPT 2 

7 61175 ADAPTER, Tachometer 1 

8 STD-783 PLUG, 1/4-28 NPT, Alien 1 

9 61400 STUD, 1/4-20 x 1-3/16 long 2 

;O 25C-22 STUD, 1/4-20 x 2-3/4 long 4 

11 STD-784 PLUG, 3/8-18 NPT, Alien 1 

2-1

~AVCCI I vr.OMING O-235-P2A PARTS CATALOG 

i 

10 

(9 

o 

I/ 

CS’ 

\B r3 

6~ :i 

/0: 

J 

I 

Figure 7. ACCESSORY HOUSING ASSEMBLY 

2-2

I 

vr~onniruc 



OIL PUMP ASSEMBLY AND ACCESSORY HOUSING ATTACHING PARTS 

FIO. 

QUANTITY 

REF. PART PER 


1 78531 BODY ASSY., Oil pump 1 

2 LW-18110 IMPELLER ASSY., Oil pump driven 1 

3 61174 SHAFT, Oil pump driven 1 

4 LW-18109 IMPELLER, Oil pump driving 1 


6 STD-1420 NUT, 5/16-18 slotted 3 

7 LW-14260 SEAL, Tachometer drive, oil 1 

8 STt)-8 WASHER, 1/4 plain 13 


10 LW-25-2.00 BOLT, 1/4-20 x 2.00 long, hex. head 2 

11 LW-25-0.94 BOLT, 1/4-20 x 15/16 long, hex. head 10 

12 STD-1411 NUT, 1/4-20 plain 2 

2-3

Lp7A1VCC) I vr.OR/IING 01235-P2A PARTS CATALOG 

8,9111 

i ~5riF 

ci 

T) 

71I 

~L 

L_ 

C? 

~-R-cr- 

8,9,11 

8,9 

iI ji 

/j 

li´•-- ’e 

,ic dcl 

c~L, 3 

11 

~b 

ii 

I 

1 

Figure 8. OIL PUMP ASSEMBLY AND ACCESSORY HOUSING ATTACHING PARTS 

2-4



ACCESSORV HOUSING AND RELATED PARTS 

PROPELLER GOVERNOR OIL LINE 

FIO. 

QUANTITY 

REF. PART PER 


1 75167 TUBE ASSY., Prop. governor oil line 1 

2 STD-1930 HOSE, 3/8 I.D. x 1.00 long 1 

3 75165 CLIP, Prop. governor oil line support 1 



6 STD-1838 BOLT, 5/16-18 x 15/16 long, hex. hd. 1 

7 L -16266-25-38 CLAMP 1 

8 MS20822-6* ELBOW, 3/8 flared tube 1/4 NPT, 900 

9 74070** ELBOW, 3/8 flared tube 9/16-18 str. thd., adj. 450 1 

10 1 MS29512-06 "O" RING 1 

Assemble in right crankcase, front. 

Assemble in prop. governor adapter. 

2-5



a´•a 

i 

d Y 

i 

I~13’ 

d- I 3 

:I´•´• 

3 

I 

4 

a 

-I 

0/ 

k 

6yio 

i, 

Figure 9. PROPELLER GOVERNOR OIL LINE 

2-6

~AVCO I vr.OMING 



PROPELLER GOVERNOR DRIVE AND COVER 

FIG. 

QUANTITY 

REF. PART PER 


1 68317 SHAFTGEAR, Prop. governor drive 1 

2 71596 WASHER, Accessory driven gear 

1 

3 STD-1221 RING, 13/16 dia. x 3/64 thick, internal retaining 1 

4 68315 GASKET, Accessory drive adapter 1 

5 75153 ADAPTER ASSY., Prop. governor drive 1 

6 1102 PLUG, 1/8-27 NPT, Alien 1 

7 310-16 STUD, 5/16-18 x 2.00 long 4 

8 STD-I 774 PIN, 1/8x1/41ong 1 


10 ISTD-475 WASHER, 5/16 internal lock 4 

11 ISTD-1410 NUT, 5/16-18 plain 

4 

12 172053 GASKET, Governor 1 

13 72378 COVER, Governor drive 1 

14 ISTD-35* WASHER, 5/16 plain AR 

15 STD-475 WASHER, 5/16 internal lock 4 

16 STD-1410 NUT, 5/16 plain 

4 

32 required for Woodward governor; 4 required for AN governor. 

2-7

~DIAVCe) LYCOMING 0-235-P2A PARTS CATALOG 

P’ 

‘~LL)i 

/i 

i_ 

ii 

14I\T"\12ya 

9 

a 6 

10 

9 

Figure 10. PROPELLER GOVERNOR DRIVE AND COVER 

2-8

~nA\’CO LYCO r~l ING 



FUEL PUMP ASSEMBLY AND ATTACHING PARTS 

FIG. 

QUANTITY 

REF. PART PER 


1 60096 GASKET, Fuel pump 

1 

2 LW-15472 FUEL PUMP, Low pressure, dual diaphragm (6441271) 1 


4 STD-1882 SCREW, 3/8-16 x 1-9/32 long, socket head, dr. hd. 2 

j‘ 

C) 

g~" 

r, 

(C´• 

Q 

-i 

~i 

Figure 11. FUEL PUMP ASSEMBLY AND ATTACHING PARTS 

2-9




VACUUM PUMP DRIVE AND COVER 

FIG. 

REF. PART 

QUANTITY 

PER 


1 61183 GASKET, Accessory adapter 1 

2 61098 ADAPTER ASSY., Vacuum pump 1 

3 STD-1774 PlN, 1/8 dia. x 1/4 long 1 

4 STD-2217 SEAL, Oil, 7/8 I.D. x 

5 72970 GEAR ASSY., Vacuum pump driven 

1 

6 71596 WASHER, Accessory driven gear 1 

7 8313 GASKET, Vacuum pump 

8 60430 COVER, Vacuum pump 1 


10 ISTD-160 WASHER, 1/4 lock 

11 (STD-1411 NUT, 1/4-20 plain 4 

4 

´•´•9´• 

6 ’17‘ 

i 

i/ 

a 

~a 

11?\9 

10 

8 

lo 

o 

’S’, o 

cDQ’ 

Cs;l 

da, 

\--2 

Figure 12. VACUUM PUMP DRIVE AND COVER 

2-10

~avco LvcoM ING 

C-235-P2A PARTS CATALOG 


OIL FILTER ASSEMBLY AND OIL COOLER BYPASS VALVE 

FIO. 

QUANTITY 

REF. PART PER 


1 LW-12795 GASKET, Oil filter adapter 2 

2 LW-12999 PLATE, Dil filter adapter 1 

3 77852 BASE ASSY., Oil filter 1 

4 LW-13215 OIL FILTER, Short, spin-on 1 


6 STD-160 WASHER, 1/4 lock 1 

7 STD-1411 NUT, 1/4-20 plain 1 

8 STD-1856 SCREW, 1/4-20 x 1.00 hex. hd., self-locking 3 

9 75944 VALVE ASSY., Temp. control, oil cooler bypass 1 

10 76510 GASKET, Valve assembly 1 

11 250-10 STUD, 1/4-20 x 1-1/4 long 1 

12 STD-294 GASKET, 7/8 x 5/8 I.D. x 3/32 annular 1 

13 62417 PLUG, Oil cooler bypass 1 

14 STD-784 PLUG, 3/8 NPT 2 

2-11

~nA\’CO LYCnNI IN G 


e~i 

/P/ 

11 

2I\1Qjci~ 

C/ 

7/ Q Sj 

o 

i~R r.\ 

ili- 

C) 

c~ 

’3’1 

4\($ L~"( 

jf 

1-´•´•-; 

"o i~ 

i\i’G 

´•?1 

ii 

A\j 

CL’i)j 

(\rl~ 

ia´• 

.´•Y ’j 

\/j 

i 

8 

a 

10 

9-/ 

Figure 13. OIL FILTER ASSEMBLY AND OIL COOLER BYPASS VALVE 

2-12

I vc~OlVIING 0-235-P2A PARTS CATALOG 


CONNECTING RODS, PISTONS AND RING ASSEMBLIES 

FIG. 

QUANTITY 

REF. PART PER 


1 78030 ROD ASSY., Connecting 4 

2 LW-13923 BUSHING, Connecting rod, upper 4 

3 78027 BOLT, Connecting rod 8 

4 LW-12186 NUT, Connecting rod 8 

5 69373 BEARING, Connecting rod 8 

6 LW-13623 PISTON, Compression ratio 8.5:1 4 

7 LVy-13445 PIN, Piston 4 

8 LW-11625 PLUG, Piston pin 8 

9 78862 RING, Piston, compression 8 

10 78864 RING, Piston, oil regulating, expander type 4 

3-1



::bi 

I 

Figure 14. CONNECTING RODS, PISTONS AND RING ASSEMBLIES 

3-2

~AVCO I VCOMING O-235-P2A PARTS CATALOG 


CYLINDER ASSEMBLY 

FIG. 

REF. PART 

QUANTITY 

PER 


1 LW-18290* CYLINDER HEAD ASSY., Nitrided 4 

2 LW-11900 SEAT, Intake valve 

3 LW-16699 SEAT, Exhaust valve (Allison valve seat) 4 

4 61681 GUIDE, Valve, intake (flanged) 

5 LW-11626 GUIDE, Valve, exhaust (flanged) 

6 66796 INSERT, Spark plug, 18-1.5 MM 8 

7 31C-12 STUD, 5/16-18 x1-1/2 long 8 

8 STD-700 ELBOW, 900, 3/8 flared tube 4 

4 

4 

4 

Incorporates Allison exhaust valve seats. 

3-3


O-235-P2A PACTS CATALOG 

liil I 

I:lii 

lil, 

/P 

i 

;;´•c~ 

I 

a 

e 

en 

8~ 

5 

Figure 15. CYLINDER ASSEMBLY 

3-4

I vr.OiVIING 0-235-P2A PARTS CATALOG 


CYLINDER RELATED PARTS 

FIG. 

QUANTITY 

REF. PART PER 


1 383-6 NUT, 3/8-24 plain 16 

2 STD-2106 NUT, 7/16-20 plain 16 

3 73806 ROD ASSY., Push 8 

4 60831 ROCKER ASSY., Valve 8 

5 60398 BUSHING, Valve rocker 8 

6 73807 SCREW, Valve adjusting 8 

7 STD-587 NUT, 9/16-18 x 5/32 thick 8 

8 LW-13790 SHAFT, Valve rocker 4 

9 LW-12892 THRUST BUTTON, Rocker shaft 8 

10 175906 GASKET, Rocker box 4 

11 61247 COVER, Rocker box 4 

12 STD-1925 SCREW, 1/4-20 x 5/8, self-locking 24 



15 STD-1410 NUT, 5/16-18 plain 8 

16 62869 RING, Oil seal, 3/32 dia, x 4-3/8 4 

17 LW-19296 GASKET, Exhaust flange 4 

18 61260 FLANGE, Exhaust, stainless 4 

3-5

~IAVCO LYCOM IN 


~Sa 

I~ 2 

C@’‘ 

i~jilJj 

j 

’j 

1;ii i1S´•; 

IiiIs~I´•i, 

Ijci 

7 

C:// 

"7 7 

9 

5 a 

oy ~o 

17 

IIJ~l’i 

&I n 

8 12~ 

Figure 16. CYLINDER RELATED PARTS 

3-6

~nA\’CO LYCO 1VI ING 



VALVE ASSEMBLY 

FIG. 

QUANTITY 

REF. PART PER 


1 LW-11901 VALVE, Intake 4 

2 LW-1 9034 VALVE, Exhaust 4 

3 61252 SEAT, Valve spring, outer 8 

4 LW-13320 SEAT, Valve spring, inner 8 

5 LW-11795 SPRING, Valve, auxiliary 8 

6 LW-11800 SPRING, Valve, outer 8 

7 LW-10077 SEAT, Valve spring 8 

8 6’0009 KEY, Valve 16 

9 LW-18661 SEAL, Shroud tube 16 

10 60903 TUBE, Push rod shroud 16 

3-7

C) I VCORn ING 0-235-P2A PARTS CATALOG 

f~´•\ 

/-9 

i 

j 

i/ 

/i/?nii 

Iliiii 

I 

i 

’I’i, 

,i,i 

i 

I i ,%3I 

S;/e 

I 

´•I 

~li~e ~i 

ic,c,,s´•i~ 

illii’I3 

6/ 

5~7 

Figure 17. VALVE ASSEMBLY 

3-8

L;I~TAVCO LYCOMING O-235-P2A PARTS CATALOG 


CYLINDER HEAD DRAIN TUBES AND INTERCYLINDER COOLING BAFFLES 

FIO. 

QUANTITY 

REF. PART PER 


1 STD-684 NIPPLE, Straight, 3/8 l.D, hose 4 

2 STD-2180 HOSE, 3/8 I.D. x 1-13/16 long 4 

3 LW-1 5592-5-05 CLAMP, Hose 8 



6 60928 TUBE ASSY., Oil drain, cyls. no. 3 4 2 

7 LW-13304 BAFFLE ASSY., Intercylinder 2 

8 71611 RETAINER, Intercylinder baffle 2 

9 LW-13303 HOOK, Intercylinder baffle retainer 2 

10 65614 PLUG, Baffle attaching 4 

11 ISTD-251 WASHER, No. 10 lock 4 

12 ISTD-665 SCREW, No. 10-32 x 3/4 long, fill. hd. dr. 4 

3-9

~AVC=O LYCOMING 

0-235-P2A PARTS CBTALOG 

i 

i 

j 

I 

r; 

´•i~ 

i, 

12 

4.5.6 

Figure 18. CYLINDER HEAD DRAIN TUBES AND INTERCYLINDER COOLING BAFFLES 

3-10

I V~70(VIING 0-2351P2A PARTS CATALOG 


MAGNETOS, DRIVES, HARNESSES AND SPARK PLUGS 

FIG. 

QUANTITY 

REF. PART PER 


1 

1 61665 GEAR, Magneto, impulse coupling 1 

2 61163 GEAR, Magneto 1 

3 62224 GASKET, Magneto adapter and magneto 3 

4 LW-12706 ADAPTER, Magneto, impulse coupling 1 

5 LW-163045-6 MAGNETO, S4LN-204 (with electric tach. pickup) 1 

LW-51360-54 MAGNETO, Impulse coupling,. S4LN-21 1 

6 STD-1727 WASHER, Plain, 3/4 0.D. x 21/64 I.D. x1/8 thick 4 


8 STD-1410 NUT, 5/16-18 plain 4 

9 CWr147209 KIT, Magneto ground terminal (w/S4LN-204) 1 

LW-52305-1 KIT ASSY., Magneto ground terminal (w/S4LN-21) 1 

10 LW- M-24~3 HARNESS ASSY., Left magneto (Slick) 1 

LW-M-2404 HARNESS ASSY., Right magneto (Slick) 1 

11 ILW-M-2375 PLATE, Spark plug cable 2 

12 LW-14060 CLIP, Two wire for 1/4 screw 3 



15 IAN500-416-12 SCREW, 1/4-20 x 3/4 long, fill. head 1 

16 ISTD-1411 NUT, 1/4-20 plain 1 

17 IAN500A-416-10 SCREW, 1/4-20 x 5/8 long 1 

18 LW-18959-150-25 CLAMP, 1-1/2 I.D., offset 4 

19 STD-553 SCREW, 6/32 x1/2 long, rd. hd. 4 

20 AN365-632A NUT, 6/32 self-locking 4 

21 lLW-16266-25-50 CLAMP 1 

22 76734 ZIP STRAP 2 

23 1182-87 SPARK PLUG, (Champion REM-37BY) shielded 8 

M-1985-48 LEAD ASSY., Replacement top bottom leads AR 

Replacement lead assemblies have spark plug terminal end assembled and are shipped with necessary parts to complete magneto end assembly 

after being cut to proper length. 

NOTE 

The above spark plugs are those used in current production only; this list does not include additional spark plugs that 

are approved for use in these engines. See latest edition of Service Instruction No. 1042 for complete listing of all approved 

spark plugs. 

4-1

L~IAVCO LYCOM ING 


~I C)r 

’?c,i---~ 

~015i( 

8 7I:: 

107i/ 

i 

~CIM 

o 

2i 

5 ’3 

i 

lo~ 

15 

19 

B2O 

i´•´• 

/16 

11 

7 

LEAD ASSY. 

M-1985-48 

Figure 19. MAGNETOS, DRIVES, HARNESSES AND SPARK PLUGS 

4-2

LYCOIVIING 



STARTER MOTOR AND ATTACHING PARTS 

FIG. 

QUANTITY 

REF. PART PER 


1 76210 STARTER, 12 volt, 10/12 pitch pinion (MZ-4204) 1 



4 STD-1410 NUT, 5/16-18 plain 4 

5-1

~I’AVCO I vnOMING 0-235-020 PARTS CATALOG 

~3/ 

j~5 

L: 

a 

o 

8 ~2 

Figure 20. STARTER MOTOR AND ATTACHING PARTS 

5-2

MAVeO LYCOMING 



OIL SUMP ASSEMBLY AND OIL SUCTION SCREEN 

FIO. 

QUANTITY 

REF. PART PER 


1 LW-1 3353 GASKET, Oil sump 1 

2 LW-15688 SUMP ASSY., Oil 1 

3 61376 CONNECTION, Intake pipe, front 2 

4 61377 CONNECTION, Intake pipe, rear 2 

5 250-12 STUD, 1/4-20 x 1-1/2 long 4 

6 STD-551 PLUG, 1/2-14 NPT, so. hd. 1 

7 STD-B WASHER, 1/4 plain 32 


9 LW-25-0.94 BOLT, 1/4-20 x 15/16 long, hex, head 18 

10 STD-1411 NUT, 1/4-20 plain 14 

11 160820 GASKET, Oil suction tube flange 1 

12 61381 TUBE ASSY., Oil suction 1 

13 STD-1227 WASHER, 1/4 plain, copper 2 

14 STD-1433 BOLT, 1/4-20 x 1-1/2 long, hex. hd., drilled end 2 

15 ISTD-8 WASHER, 1/4 plain (max. 4) AR 

16 STD-1409 NUT, 1/4-20 slotted shear 2 

17 STD-68 PIN, Cotter, 1/16x1/21ong 2 

18 61378 SCREEN, Oil suction 1 

19 STD-1045 GASKET, 1-1/4 I.D, x 1-1/2 O.D. x 3/32 annular 1 

20 1 61358 PLUG, 1-1/2x1-1/4-12, hex, hd. 1 

6-1

I vr´•OR/IING 0-235-P2A PARTS CATALOG 

2 

10 

a,, 

16 

17 

o 

-f-- 

15 

11 4~ 

O 

I’ j! 

ii 

o 

A 

7 

Q_1/Q 

9-/ 

liT)ii I~ 

1D :g 

´•´•."g i, 

19 

Figure 21. OIL SUMP ASSEMBLY AND OIL SUCTION SCREEN 

6-2

I VCOIVIING 0-235-P2A PARTS CATALOG 


INTAKE PIPE ASSEMBLY 

FIG. 

QUANTITY 

REF. PART PER 


1 LW-16728 PIPE, Intake cyls. nos. 1 2 2 

2 LW-16730 PIPE, Intake cyl, no. 3 1 

3 LW-16729 PIPE, Intake cyl. no. 4 1 

4 STD-1196 HOSE, 1-1/2 I.D. x 1-7/8 O.D. x 1-1/2 long 4 

5 LW-1 5592-8-28 CLAMP, Hose 8 

6 71973 GASKET, 2 bolt flange, 1-3/4 I.D. 4 

7 74360 FLANGE, Intake pipe, upper 4 


9 STD-1 60 WASHER, 1/4 lock, internal lock 8 

10 LW-25-1.25 BOLT, 1/4-20 x 1-1/4 long, hex. hd. 8 

6-3

~AVCe3 I VCOMING O-235-P2A PARTS CATALOG 

i~---- 

I 

7 

1-I10 

Y1 r8 

ii 

~1 

k~/ 

B-/ 

4-/ 

Figure 22. INTAKE PIPE ASSEMBLY 

6-4

I VCONIING 0-235-P2A PARTS CATALOG 


CARBURETOR ASSEMBLY 

FIG. 

QUANTITY 

REF. PART PER 


1 60592 GASKET, Carburetor 1 

2 LW-16073 CARBURETOR, Marvel-Schebler, MA-3PA (10-5220) 1 



5 STD-1411 NUI, 1/4-20 plain 4 

6-5

I VCOR/IING 0-235-P2A PARTS CATALOG 

-1 

I‘‘‘: 

c 

I 

c 

cl 

r/ 

o 

1) 

11 

cl 

cj 

o 

;II; 

Yr 

I 

~3 I 

I,´•~ 

:6, 

o 0‘ 

u 

\e 

,c 

In 

E 

1\IZ* 

N 

5 

Figure 23. CARBURETOR ASSEMBLY 

6-6




PRIMING SYSTEM 

FIG. 

QUANTITY 

REF. PART PER 


1 LW-12098-1-170 TUBE ASSY., Primer cylinder no. 2 1 



4 LW-12098-0-100 TUBE ASSY., Primer, intermediate 1 

5 LW-16266-25-13 CLAMP 3 

6 LW-18959-150-25 CLAMP, 1-1/2 I.D. with 1/4 dia. offset 3 

7 STD-553 SCREW, No. 6-32 x1/2 long, rd. hd. 3 

8 AN365-632A NUT, No. 6-32 self-locking 3 

9 STD-853 TEE, Union, 1/8 tube 1 

10 LW-18071 TEE, Union, 1/8 tube 1 

11 74225 NIPPLE ASSY., Primer 3 

12 1102* PLUG, 1/8 NPT, Alien head 1 

Assemble in cylinder head. 

6-7

O I VCOR/IING 0-235-P2A PARTS CATALOG 

31 

I I I 

1 31 7~8 

~s 

\41 

’;8 9 

~-6 

4 

10 

s 5 

Figure 24. PRIMING SYSTEM 

6-8

I Y~ONIING 



SEAL AND GASKET SET 

WIDE CYLINDER FLANGE MODELS 


61499-1 SEAL AND GASKET SET 1 

STD-111 GASKET 1 

STD-2217 SEAL, Oil 1 



8313 GASKET, Vac. pump 2 

60096 GASKET, Fuel pump 1 

60592 GASKET, Carb. 1 

60820 GASKET, Oil suction tube flange 1 

LW-18639 LOCKPLATE, Crankshaft gear 1 

LW-14260 SEAL, Tach. shaft 1 

61173 GASKET, Oil press. hsg. 1 

61183 GASKET, Accy. adapter 1 

61523 CONTAINER 1 

61531 GASKET, Hydraulic valve 1 

62224 GASKET, Mag. adapter 3 


LW-19296 GASKET, Exhaust flange 4 

68315 GASKET, Accy. dr, adapter 1 

LW-13353 GASKET, Oil sump 1 

71973 GASKET, Intake flange 4 

72053 GASKET, Gov. drive 1 

72059 GASKET 1 

72078 LOCKPLATE, Cam gear 2 

72091 RING, Oil seal 8 

73383 LOCKPLATE 1 

73817 LOCKPLATE, Camshaft idler gear shaft 2 

73818 GASKET, Accy. hsg. 1 




76940 SEAL, Crankshaft oil 1 

LW-13792 SEAL, Crankshaft oil 1 

LW-12681 GASKET, Mag. 2 

LW-12795 GASKET 1 

LW-11632 RING, Oil seal 6 

62869 RING, Cyl. base 4 

LW-12040 TOP OVERHAUL GASKET SET 1 

62869 SEAL, Cylinder base 4 


71973 GASKET, Intake, 2 bolt flange 4 


7-1

I vr.OlVIING 0-235-P2A PARTS CATALOG 


CYLINDER, PISTON AND RING KIT 

WIDE CYLINDER FLANGE MODELS 



STD-587 NUT, 9116-18 x 5/32 thick 2 



























7-2



NUMERICAL INDEX 


AN365-632A Nut 4-1 LW-1 63045-6 Magneto 4-1 

AN365-632A Nut 6-7 LW-16354 Crankcase Assy. 1-1 

AN500-41 6-12 Screw 4-1 LW-16699 Seat 3-3 

AN500A-41 6-10 Screw 4-1 LW-16728 Pipe 6-3 

AN6-21 Bolt 1-11 LW-16729 Pipe 6-3 

AN6-34A Bolt 1-11 LW-16730 Pipe 6-3 

LW-1 0077 Seat 3-7 LW-1 8071 Tee 6-7 

LW-11622 Stud 1-1 LW-18109 Impeller 2-3 

LW-11623 Stud 1-1 LW-18110 Impeller Assy. 2-3 

LW-11625 Plug 3-1 LW-18290 Cylinder Assy. 3-3 

LW-11626 Guide 3-3 LW-18639 Lockplate 1-5 


LW-11800 Spring 3-7 LW-18667 Pin 1-9 

LW-1 1 900 Seat 3-3 LW-1 89 59-1 50-2 5 Clamp 4-1 

LW-1 1 901 Valve 3-7 LW-1 89 59-1 50-2 5 Clamp 6-7 

LW-12044 Housing Assy. 2-1 LW-19034 Valve 3-7 

LW-12098-0-100 Tube Assy. 6-7 LW-19296 Gasket 3-5 

LW-12098-1-116 Tube Assy. 6-7 LW-25-0.94 Bolt 2-3 



LW-12186 Nut 3-1 LW-25-1.50 Bolt 1-11 

LW-12695 Crankshaft Assy. 1-5 LW-25S1.50 Bolt 1-11 

LW-1 2706 Adapter 4-1 LW-25-1.75 Bolt 1-11 

LW-1 2795 Gasket 2-11 LW-25-2.00 Bolt 2-3 

LW-12892 Thrust Button 3-5 LW-51360-54 Magneto 4-1 

LW-1 2999 Plate 2-11 LW-52305-1 Kit 4-1 

LW-13215 Oil Filter 2-11 LW-M-2375 Plate 4-1 

LW-13303 Hook 3-9 LW-M-2403 Harness Assy. 4-1 

LW-13304 Baffle Assy. 3-9 LW-M-2404 Harness Assy. 4-1 

LW-13320 Seat 3-7 M-1985-48 Lead Assy. 4-1 

LW-13353 Gasket 6-1 MS20822-6 Elbow 2-5 

LW-1 3445 Pin 3-1 STD-8 Washer 1-11 

LW-13623 Piston 3-1 STD-8 Washer 2-3 


LW-13790 Shaft 3-5 STD-8 Washer 2-11 

LW-13792 Seal 1-7 STD-8 Washer 4-1 

LW-1 3884 Bearing 1-7 STD-8 Washer 6-1 

LW-13923 Bushing 3-1 STD-8 Washer 6-3 

LW-1 4060 Clip 4-1 STD-8 Washer 6-5 

LW-1 4260 Seal 2-3 STD-33 Washer 1-11 

LW-14781 Gage Assy. 1-3 STD-33 Washer 2-9 

LW-1 5472 Fuel Pump 2-9 STD-35 Washer 2-3 

LW-1 5592-5-05 Clamp 3-9 STD-35 Washer 2-5 

LW-1 5592-8-28 Clamp 6-3 STD-35 Washer 2-7 

LW-15688 Sump Assy. 6-1 STD-35 Washer 3-5 

LW-157209 Kit 4-1 STD-35 Washer 5-1 

LW-1 6073 Carburetor 6-5 STD-68 Pin 6-1 

LW-1 6266-2 5-1 3 Clamp 6-7 STD-1 60 Washer 1-11 

LW-1 6266-2 5-38 Clamp 2-5 STD-1 60 Washer 2-3 

LW-1 62 66-2 5-50 Clamp 4-1 STD-1 60 Washer 2-10 

8-1

~IAVCO LYCOMING 




STD-1 60 Washer 2-11 STD-1411 Nut 6-5 

STD-1 60 Washer 4-1 STD-1 420 Nut 2-3 

STD-1 60 Washer 6-1 STD-1 433 Bolt 6-1 

STD-1 60 Washer 6-3 STD-1 727 Washer 4-1 

STD-1 60 Washer 6-5 STD-1 774 Pin 2-7 

STD-251 Washer 3-9 STD-1 774 Pin 2-10 

STD-294 Gasket 2-11 STD-1 838 Bolt 2-5 

STD-425 Washer 1-7 STD-1856 Screw 2-11 



STD-475 Washer 3-5 STD-1 930 Hose 2-5 

STD-475 Washer 4-1 STD-21 06 Nut 3-5 

STD-475 Washer 5-1 STD-21 80 Hose 3-9 

STD-514 Dowel 1-1 STD-2213 Screw 1-5 

STD-551 Plug 6-1 STD-2217 Seal 2-10 

STD-553 Screw 4-1 250-10 Stud 2-11 

STD-553 Screw 6-7 25(=-12 Stud 6-1 

STD-557 Dowel 1-1 25(3-22 Stud 2-1 

STD-587 Nut 3-5 310-12 Stud 1-1 

STD-596 Nut 1-11 31C-12 Stud 2-1 

STD-665 Screw 3-9 310-12 Stud 3-3 

STD-678 Washer 1-11 31C-16 Stud 2-7 

STD-684 Nipple 3-9 31C-19 Stud 2-1 

STD-700 Elbow 3-3 3100-17 Stud 2-1 

STD-705 Bolt 1-9 38-13 Stud 1-1 

STD-783 Plug 2-1 44-13 Stud 1-1 

STD-784 ’Plug 2-1 3838 Nut 3-5 

STD-784 Plug 2-11 10288 Ball 1-7 

STD-853 Tee 6-7 1102 Plug 1-1 

STD-872 Nut 1-11 1102 Plug 2-1 

STD-1 045 Gasket 1-7 1102 Plug 2-7 

STD-1045 Gasket 6-1 1102 Plug 6-7 

STD-1065 Dowel 1-5 1182-87 Spark Plug 4-1 

STD-1111 Elbow 1-1 8313 Gasket 2-10 

STD-1196 Hose 6-3 45530 Ring 1-9 

STD-1211 Plug 1-5 60009 Key 3-7 

STD-1221 Ring 2-7 60096 Gasket 2-9 

STD-1227 Washer 6-1 60398 Bushing 3-5 

STD-1 409 Nut 1-11 60430 Cover 2-10 

STD-1 409 Nut 6-1 60592 Gasket 6-5 

SID-1410 Nut 2-7 60803 Strap 1-11 

STD-1410 Nut 3-5 60814 Bushing 1-5 

STD-’IL~10 Nut 4-1 60820 Gasket 6-1 


STD-1411 Nut 1-11 60831 Rocker Assy. 3-5 

STD-1411 Nut 2-3 60882 Gear 1-5 


STD-1411 Nut 2-11 60903 Tube 3-7 


STD-1411 Nut 6-1 61084 Spring 1-7 

8-2

L~CI’AVCO LYCOMING O-235-P2A PARTS CATALOG 



61098 Adapter Assy. 2-10 72059 Gasket 1-3 

61151 Shaft 1-9 72091 Ring 1-7 

61155 Gear 1-5 72378 Cover 2-7 

61163 Gear 4-1 72844 Plug 1-3 

61174 Shaft 2-3 72970 Gear Assy. 2-10 

61175 Adapter 2-1 73757 Bushing 1-5 

61183 Gasket 2-10 73806 Rod Assy. 3-5 

61247 Cover 3-5 73807 Screw 3-5 

61252 Seat 3-7 73817 Lockpiate 1-9 

61260 Flange 3-5 73818 Gasket 2-1 

61358 Plug 6-1 74065 Ring 1-3 

61376 Connection 6-1 74070 Elbow 2-5 

61377 Connection 6-1 74225 Nipple Assy. 6-7 

61378 Screen 6-1 74360 Flange 6-3 

61381 Tube Assy. 6-1 74996 Gear Assy. 1-9 

61400 Stud 2-1 75072 Gear Assy. 1-9 

61510 Plug 1-5 75153 Adapter Assy. 2-7 

61544 Plunger 1-9 76165 Clip 2-5 

61665 Gear 4-1 75167 Tube Assy. 2-5 

61681 Guide 3-3 75706 Camshaft 1-5 

62224 Gasket 4-1 75708 Shaft Assy. 1-9 

62417 Plug 2-11 75767 Tube 1-3 

62869 Ring 3-5 75906 Gasket 3-5 

65614 Plug 3-9 75944 Valve Assy. 2-11 

66796 Insert 3-3 76210 Starter 5-1 

68315 Gasket 2-7 76510 Gasket 2-11 

68317 Shaftgear 2-7 76529 Plug 1-7 

68763 Bearing 1-7 76734 Zip Strap 4-1 

69373 Bearing 3-1 77309 Bushing 1-9 

69796 Dowel 1-1 77852 Base Assy. 2-11 

71105 Body 1-7 78027 Bolt 3-1 

71596 Washer 2-7 78030 Rod Assy. 3-1 

71596 Washer 2-10 78531 Body Assy. 2-3 

71611 Retainer 3-9 78862 Ring 3-1 

71973 Gasket 6-3 78864 Ring 3-1 

72053 Gasket 2-7 

8-3

Parts Catalog

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