Manual Gearbox - 3 Synchro Internal Components

Manual Gearbox - Selectors and Speedometer Drives
No. Part No. Description Qty. Remarks No. Part No. Description Qty. Remarks
Direct and Remote Gearchange Selectors
1959-73, Saloon and Estate; 1960-75, Van and Pick Up
1 22A611 FORK, 1st and 2nd speed 1 3 synchromesh, 1959-68.
22G889 FORK, 1st and 2nd speed 1 4 synchromesh, 1968 on.
2 22A167 ROD, 1st and 2nd speed fork 1 3 synchromesh, 1959-68.
22G821 ROD, 1st and 2nd speed fork 1 4 synchromesh, 1968 on.
3 22A610 FORK, 3rd and 4th speed 1
4 22A168 ROD, 3rd and 4th speed fork 1 3 synchromesh, 1959-68.
22G822 ROD, 3rd and 4th speed fork 1 4 synchromesh, 1968 on.
5 22G827 FORK, reverse 1
6 22A169 ROD, reverse fork 1
7 88G213 SELECTOR, reverse fork rod 1
8 22G826 LEVER, reverse fork 1
9 2A3504 PIVOT PIN, reverse fork lever 1
10 CCN108 CIRCLIP, lever to pivot pin 1
11 2A3492 SCREW, fork and selector locating 3
12 LWZ404 WASHER, shakeproof 3
13 FNZ604 NUT, locking 3
When reassembling the gearbox, ensure that the fork locating screws are securely locked in place. It’s
not unknown for one of them to vibrate loose otherwise, allowing a fork to slide on its rod and
resulting in a complete loss of ability to select the gears operated by that fork; removal of the engine
and gearbox from the car to tighten up one screw is a painful lesson indeed.
Somerford Mini remembers one occasion where two valiant souls entered in the Italian Job event
drove their Mini right the way through the Alps and most of the way across northern Italy in
first and second gears only, the third/fourth selector fork screw having worked loose! The engine
and gearbox duly removed in an Italian hotel car park, the screw was retightened allowing the
Mini to return across Europe to Britain under its own steam and with a full complement of
forward gears (which no doubt allowed the drivers’ hearing to recover somewhat).
14 22G411 PLUNGER, fork rod detent 3
15 2A3647 SPRING , plunger 3
16 22A387 PLUG, detent bore 2
17 AED172 WASHER, sealing 2
18 22A208 GATE, gearchange 1
19 88G231 SHAFT, gearchange 1
20 13H577 OIL SEAL, shaft 1
21 88G222 LEVER, gearchange operating 1
22 WKN404 KEY, lever 1
23 2A3335 SCREW, operating lever to gearchange 1
shaft
24 LWZ405 WASHER, shakeproof 1
25 88G224 LEVER, gearchange shaft 1
26 2A3335 SCREW, lever to gearchange shaft 1
27 LWZ305 WASHER, locking 1
28 88G223 LEVER, remote control shaft 1
29 2A3335 SCREW, lever to remote control shaft 1
30 LWZ305 WASHER, locking 1
31 2A3467 BUTTON, thrust 1 Direct gearchange models .
32 2A3390 SPRING , thr ust button 1 Direct gearchange models .
33 88G233 SHAFT, remote control 1 Direct gearchange models , 1959-68.
34 88G553 SHAFT, remote control 1 Direct gearchange models , 1968 on.
35 22A1832 SEAT, gear lever 1 Direct gearchange models , 1968 on.
36 22A1377 BUSH, gear lever seat, rubber 1 Direct gearchange models , 1968 on.
37 22A1378 SLEEVE, bush 1 Direct gearchange models , 1968 on.
38 22A253 SHAFT, remote control 1 Remote gearchange models.
39 22G79 LEVER, bellcrank 1 Remote gearchange models.
40 22G259 PIN, pivot 1
41 PWZ107 WASHER, plain 1
42 22A398 WASHER, anti-rattle A/R
43 22G174 WASHER, anti-rattle A/R
22G175 WASHER, anti-rattle A/R
44 22A191 PLUNGER, reverse detent 1
45 2A3647 SPRING , plunger 1
46 22A149 PLUG, detent bore 1
47 AED172 WASHER, sealing 1
48 22G351 PLUNGER, reversing light switch 1 Direct gearchange models with
reversing light fitted.
49 UHN305 NIPPLE, lubricating, remote control 1
50 2K4973 WASHER, sealing 1
Rod Gearchange Selectors
1973 On, Saloon and Estate; 1976 On, Van and Pick Up
51 TSP100390 FORK, 1st and 2nd speed 1
52 TSP100400 FORK, 3rd and 4th speed 1
53 22G1854 SHAFT, selector forks 1
54 22G2595 ROLL PIN, 3rd and 4th speed fork to 1
shaft
55 22G1858 SHAFT, selector 1
56 AHU1672 OIL SEAL, selector shaft, in differential 1
cover
57 DAM7764 BUSH, selector shaft 1 1973-85 approx.; replace with
SSK001 selector oil seal kit.
58 DAM8706 BUSH, aluminium, selector shaft 1 1985 approx. on (improved design).
59 CDU1563 O RING, selector shaft 1 1985 approx. on (improved design).
60 DAM3022 GAITER, selector shaft 1
Selector shaft oil seal failure was always a problem on rod gearchange Minis (as any late-model Mini
owner with oil drips on their garage floor will know). The most common remedy effected by owners in
the past was to put two oil seals one behind the other on the selector shaft (there’s just enough space
to do so), the outer one of the tw o acting both as a secondary seal and also as a secondary shield
behind the gaiter, protecting the inner seal from under-body muck and grit. Most importantly, the
second seal helped to support the selector shaft and hold it in alignment in the gearbox casing.
Factory engineers finally came up with a remedy in 1985, fitting a modified selector shaft bush with a
new O ring to improve the selector shaft alignment. Somerford Mini of course supply all these
parts separately, but we’ve also put them together as an easy-to-buy, easy-to-fit kit for the owner
to modify a pre-1985 Mini or repair a later model:
61 SSK001 SELECTOR OIL SEAL KIT 1 Includes oil seal, gaiter and
improved bush and O ring.
62 22G1844 SPOOL, interlock 1
63 BLS110 BALL, detent 1
64 22G2083 SPRING, detent ball 1
65 22G1870 SLEEVE, detent 1
66 22G1417 O RING, sleeve 1
67 22G1845 PIN, pivot, bellcrank 1
68 31B447 O RING, pivot pin 1
69 42H1077 BUSH, pivot pin 1
70 AHU2292 LEVER, selector release 1
71 22G1847 LEVER, bellcrank, lower 1
72 42H1081 SPACER, bellcrank 2
73 22G1848 LEVER, bellcrank, upper 1
74 PWZ306 WASHER, plain 1
75 LNZ206 NUT, locking 1
Speedometer Drives
76 22A1881 PINION, 17 teeth (off white nylon) 1 1959-84, 10" road wheels (plus 12"
wheels, 1275 GT).
1984-94, 998 and 1275 carb (not
France).
3.105:1 final drive.
DAM2905 PINION, 16 teeth (green nylon) 1 1984-92, 998.
3.444:1 final drive.
TXD10006 PINION, 18 teeth (red nylon) 1 1991 on, 1275 SPi (not F rance).
3.211:1 final drive.
TXD10004 PINION, 15 teeth (black nylon) 1 1990 on, 1275 carb (France) and SPi
(France), all 1275 MPi models.
2.762:1 final drive.
77 2A3624 BUSH, steel, speedometer pinion 1
78 DAM8488 BUSH, speedometer cable attachment 1
79 2A3628 GASKET, bush 1
80 SH504071 SCREW, coarse thread, bush to housing 1
81 LWZ304 WASHER, locking 1
82 22A862 PLATE, bush retaining 1
83 2A3720 GEAR, drive, 6 teeth (not paint coded) 1 1959-84, 10" road wheels (plus 12"
wheels, 1275 GT).
1984-94, 12” road wheels, 998 and
1275 carb (not France).
3.105:1 final drive.
DAM6028 GEAR, drive, 7 teeth (blue paint coded) 1 1984-92, 12” road wheels, 998.
3.444:1 final drive.
TXF10004 GEAR, drive, 5 teeth (red paint coded) 1 1991 on, 12” and 13” road wheels,
1275 SPi (not France).
3.211:1 final drive.
TXF10001 GEAR, drive, 7 teeth (yellow paint coded) 1 1990 on, 12” and 13” road wheels,
1275 carb (France) and SPi (France),
all 1275 MPi models.
2.762:1 final drive.
Tel. 01249 721421 Fax. 01249 721316 www.somerford-mini.co.uk
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