Distributors - Carburetter Models

Starter Motors and Dynamo
No. Part No. Description Qty. Remarks No. Part No. Description Qty. Remarks
Inertia Starter Motors
Inertia type starter motors were fitted to Minis up until 1985. An iner tia starter fitted car can be
identified by the starter solenoid being elsewhere in the engine bay, connected to the motor by a heavy
duty cable.
There are four types of inertia starter motor, all originally manufactured by Lucas. While they appear
quite different in construction, they are in fact interchangeable. If you intend to repair your starter
motor, take care to correctly identify which of the types it is before ordering parts - it will have ‘M35H’,
‘M35G’, ‘M35J’ or ‘M35K’ stamped on the casing. There should also be on the casing a 5-digit Lucas part
number, which will also assist in ordering some parts.
Reconditioned Starter Motor
Genuine reconditioned starter motors have more recently been manufactured to a specification closely
resembling the M35J type, irrespective of the type of old unit used in the reconditioning process . This
means that they all now use the later design axial brushes (GSB105) and a ‘face-contacting’ commutator.
Non-genuine reconditioned units may still be built up as either M35H, M35G, M35J or M35K units,
depending on spares availability for the designs.
1 GXE4404 STARTER MOTOR, reconditioned, exchange 1 All models.
Original M35H and M35G Type Starter Motors
(Lucas part numbers 25071A/F, 25075 and 25083J)
2 47H5342 NUT, pinion retaining 1 25071 and 25075 star ter motors.
3 7H6887 CLIP, pinion retaining 1 25083 starter motors.
4 7H5045 SPRING 1
5 27H6828 PINION AND BARREL SET 1 25071 starter motors.
6 7H5046 PINION AND BARREL SET 1 25075 starter motors.
67H5010 PINION AND BARREL SET 1 25083 starter motors.
7 47H5344 SPRING , pinion retaining 1 25071 starter motors.
8 7H5047 SPRING , pinion return 1 25075 starter motors.
9 47H5348 FIELD COIL SET 1 25071 starter motors.
37H7502 FIELD COIL SET 1 25075 and 25083 starter motors.
10 47H5346 BUSH, driving end 1
11 47H5341 SPRING SET 1
12 47H5340 BUSH, commutator end 1
13 GSB102 BRUSH SET, radial acting 1
14 47H5349 SUNDRY PARTS KIT 1 25071 starter motors.
7H5156 SUNDRY PARTS KIT 1 25075 and 25083 star ter motors.
Original M35J Type (Lucas par t number 25147B)
and M35K Starter Motors
The M35K type starter was fitted for a very short period in the 1970s and is very poorly documented.
If you have an M35K type starter, commonly used service parts such as brushes, the pinion and barrel
set, retaining clip and spring are the same as M35J components. Somerford Mini cannot however
vouch for the compatibility of other parts.
15 7H6887 CLIP, pinion retaining 1
16 7H5045 SPRING 1
17 67H5010 PINION AND BARREL SET 1
18 AAU9326 FIELD COIL SET 1
19 37H4672 END PLATE, commutator end 1
20 519812 BUSH KIT 1
21 GSB105 BRUSH SET, axial acting 1
22 519566 SUNDRY PARTS KIT 1
Starter Motor Mounting Hardware
23 SH506101 SCREW, starter motor to flywheel housing 2
24 LWZ206 WASHER, locking 2
25 PWZ106 WASHER, plain 2
22A1898 DISTANCE PIECE, starter to 1 If required (1970 appro x. to 1985,
torque converter housing
automatic transmission).
Starter Motor Circuit Components
26 17H5260 SWITCH, starter, floor mounted 1 1959-64; not Super, Cooper or Cooper S.
27 5L24 KNOB, floor star ter switch 1
28 5L25 COVER, switch 1
29 LWZ206 WASHER, locking 1
30 2K7507 WASHER, fibre 1
31 5L245 COVER, dust, floor star ter switch 1
32 BCA4413 STARTER SOLENOID, round, 1 Lucas 2ST type, 1964-67; Super,
with start button Cooper and Cooper S, 1961-67.
33 27H5576 CAP, rubber, start button 1
34 13H5952 STARTER SOLENOID, square 1 Lucas 4ST type; 1967-85.
35 PMZ306 SCREW, solenoid attaching 2 1959-80, imperial thread.
36 WE702101 WASHER, shakeproof 2 1959-80.
37 ANZ103 NUT 2 1959-80, imperial thread.
38 PTZ1004 SCREW, self tapping, solenoid attaching 2 1975-80; alternative.
39 PWZ203 WASHER, plain 2 1975-80; alternative.
40 SE105101 SCREW, solenoid attaching 2 1980-85; metric thread.
41 WE105001 WASHER, shakeproof 2 1980-85.
42 NH105041 NUT 2 1980-85; metric thread.
Pre-Engaged Starter Motors
Pre-engaged starter motors were fitted to Minis from 1985 onwards. A pre-engaged starter motor may
be identified by its integral solenoid, a large round cylinder riding piggy-back style on the top of the
motor. Pre-engaged starters are also operated by a relay, unlike the ear lier inertia starters.
43 GXE4527 STARTER MOTOR, reconditioned, exchange 1
44 BAU5443 DRIVE ASSEMBLY 1
45 608395A DRIVE RETAINING KIT 1
46 NAF10004 SOLENOID ASSEMBLY 1
47 BAU5849 BRUSH BOX ASSEMBLY 1
48 BAU5446 BRUSH SET 1
49 BAU5448 PIVOT KIT 1
50 BAU5449 BUSH KIT 1
51 BAU5450 SEAL KIT 1
52 BAU5451 SUNDRY PARTS KIT 1
Starter Motor Mounting Har dware
53 SH506101 SCREW, starter motor to flywheel housing 2
54 LWZ206 WASHER, locking 2
55 PWZ106 WASHER, plain 2
Starter Motor Circuit Components
56 YWB10032 RELAY, starter motor 1
57 YRF10001 FUSIBLE LINK, starter motor circuit 1
Dynamo
A Lucas manufactured type C40 dynamo was fitted to the majority of Minis up until the mid-1970s. The
dynamo casing was stamped with a 5 digit Lucas part number: 22700, 22742 and 22775 are original
Mini equipment.
When fitting a dynamo that is new to the car, it must be polarised to match the earth system (positive
or negative ear th). This may be done as follows:
Fit the dynamo to the engine , without connecting it to the car’s electrics. Then hold a length of wire
between the battery cable terminal on the starter solenoid and the smaller of the two terminals (the
‘field’ terminal) on the back of the dynamo for three to five seconds, to polarise the dynamo. Remove
the length of wire and connect the dynamo to the car’s electrical system.
58 GXE3101 DYNAMO, reconditioned, exchange 1 Not supplied with pulley and fan.
59 47H5395 END PLATE, commutator end 1 Includes bush, oiler and brush springs .
60 7H5390 BUSH, end plate 1
61 47H5394 OILER ASSEMBLY 1
62 RTC466A SPRING, brush 2
63 GGB102 BRUSH SET 1
64 607141A FIELD COIL SET 1
65 509311A ARMATURE ASSEMBLY 1
66 27H7647 END PLATE, driving end 1
67 18G8620 BEARING, end plate 1
68 17H5217 THROUGH BOLT, dynamo assembly 2
69 17D11 FAN 1
70 12G1054 PULLEY 1 Manual models; not 850cc 1969 on, or
Cooper and Cooper S.
12A34 PULLEY 1 850cc, 1969 on.
12G2102 PULLEY 1 Cooper and Cooper S models .
12A1772 PULLEY 1 Automatic models .
71 37H6836 FITTING KIT,pulley and fan 1 Includes key, nut and washer.
72 WKN404 KEY, woodr uff 1
73 FNZ207 NUT,pulley and fan securing 1
74 LWZ207 WASHER, locking 1
75 GCB10813 DRIVE BELT, dynamo, water pump and fan 1 Use with original 3 7/8" dia. water
pump pulley.
Dynamo Circuit Components
76 3H1835 CONTROL BOX ASSY., screw terminals 1 1959-60 models.
77 GEU6603 CONTROL BOX ASSY., Lucar spade terminals1 1960 on models .
78 PTZ1012 SCREW, self tapping, control box to dash 2
79 GHF1030 NUT, Lokut 2
Tel. 01249 721421 Fax. 01249 721316 www.somerford-mini.co.uk
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