Manual Gearbox - 3 Synchro Internal Components

Automatic Transmission - Torque Converter and Housing
No. Part No. Description Qty. Remarks No. Part No. Description Qty. Remarks
Torque Converter Housing
1 - TORQUE CONVERTER HOUSING ASS’Y 1 Non-ser viced part.
2 22A1239 BEARING, idler gear (1.004" ext. dia.) 1 1965-68; fit with CCN216 circlip.
13H7985 BEARING, idler gear (1 1/16" ext. dia., 1 1968-82 approx.; fit with 51K3565
3/4" int. dia.) circlip.
AHU1707 BEARING, idler gear (1 3/8" ext. dia., 1 1982 appro x. on (A Plus gears); fit
7/8" int. dia.) without circlip.
As happened with Mini manual gearboxes at similar dates, the idler gear shaft diameter (i.e. idler gear
bearing internal diameter) and the bearing seat diameter in the torque converter housing (idler gear
bearing external diameter) changed a couple of times. To be safe, measure the internal and exter nal
diameters of your bearing before ordering. Note that the idler gear thrust washers, listed later on this
page, also changed to 7/8” inter nal diameter when the AHU1707 bearing arrived around 1982.
3 CCN216 CIRCLIP, bearing 1 1965-68.
51K3565 CIRCLIP, bearing 1 1968-82.
4 AAU1365 BEARING, input gear 1
5 22A661 RETAINER, bearing 1
6 22A784 OIL SEAL, primar y gear 1
7 22A973 COVER, engine oil pump 1
8 2K8161 PLUG, core, torque converter housing 1
9 22A974 TUBE, dipstick 1 1965-96.
LQN100830 TUBE, dipstick 1 1997 on (Japan).
10 22A750 DIPSTICK ASSEMBLY 1 1965-85.
11 DAM7599 DIPSTICK ASSEMBLY 1 1985-96.
LQM100700 DIPSTICK ASSEMBLY 1 1997 on (Japan).
12 AEC671 WASHER, rubber, dipstick 1 1965-85; included in 22A750 dipstick
assembly.
13 22A1084 PLUG, housing 1
14 22A1898 DISTANCE PIECE, starter motor to housing 1 If required; 1970 approx. to 1985.
15 GUG705684GM GASKET, housing to cylinder block and 1
transmission case
16 BH605161 BOLT, housing to cylinder block, short 3
17 BH605181 BOLT, housing to cylinder block, long 2 1965-90.
BH605201 BOLT, housing to cylinder block, long 2 1990 on.
18 SH605071 SCREW, housing to cylinder block 2
19 LWZ305 WASHER, locking 6
20 12B63 WASHER, sealing 1
For hardware used to attach the torque converter housing to the transmission case, please see
the ‘Automatic Transmission - External’ section of the Somerford Mini Catalogue.
Torque Converter
21 22G1691 TORQUE CONVERTER ASSEMBLY 1 1965-70.
DAM5085N TORQUE CONVERTER ASSEMBLY 1 1970-85; inertia starter.
DAM7564N TORQUE CONVERTER ASSEMBLY 1 1985-94; pre-engaged starter, 998
and 1275 carburetter models .
TQB10007N TORQUE CONVERTER ASSEMBLY 1 1994-96; 1275 injection models.
TQB100140N TORQUE CONVERTER ASSEMBLY 1 1997 on (Japan); 1275 injection
models.
The torque converter part numbers listed here are for new torque converter assemblies; reconditioned
assemblies are also available from Somerford Mini, on request - please contact us for details.
22 22G2613 RING GEAR, starter motor 1 Included in torque converter assembly;
inertia star ter.
DAM7518 RING GEAR, starter motor 1 Included in torque converter assembly;
pre-engaged star ter.
23 27H8800 PLUG, drain 2 Included in torque converter assembly.
24 27H8803 WASHER, sealing 2 Included in torque converter assembly.
25 27H8801 BOLT 6 Included in torque converter assembly.
26 27H8804 LOCK TAB, torque converter bolt 3 Included in torque converter assembly.
27 22A1158 SCREW, torque converter to crankshaft 1
28 22A1155 LOCK TAB, screw 1
29 22A1159 KEY, torque converter to crankshaft 1
30 22G1022 COVER, torque converter 1 1965-70.
22G1580 COVER, torque converter 1 1970-94; 998 and 1275 carburetter
models.
TGL10008 COVER, torque converter 1 1994 on; 1275 injection models.
31 22A1114 PLUG, cover 1
32 SH605081 SCREW, cover to torque converter housing 5
33 LWZ305 WASHER, locking 5
34 FNZ105 NUT 5
35 TYG10007 BOLT, dowel, cover to torque converter 2 1994 on; 1275 injection models.
housing
36 22A1492 GROMMET, cover to torque converter 1 1970 on.
housing
Torque Converter Gear Train
Note if you have a 1965 or early 1996 Mini Automatic that the output gear train is unique and is not
itemised here. Factory advice for these models is to replace all three gears with those shown here,
together with the relevant thrust washers and shims .
If you are unsure that the age of your Mini’s transmission matches the age of the car, you will need to
work out whether you have pre-A Plus or A Plus output gears. A Plus gears were introduced on the
Mini round about 1982 (at different times on different models...), and have a sharper tooth angle and
different pitch making them quieter than,but definitely not interchangeable with, the earlier gears. A
Plus gears can be identified by the presence of a circumferential groove in the centre of the teeth.
37 22A1064 PRIMARY GEAR ASS’Y, with bushes 1 1965-82 approx.
DAM5713 PRIMARY GEAR ASS’Y, with bushes 1 1982 approx. to 1992; A Plus gears,
998 models.
DAM9374 PRIMARY GEAR ASS’Y, with bushes 1 1992 on; A Plus gears , 1275 models.
38 22A1066 BUSH, primary gear, front 1 1965-92; 848 and 998 models.
DAM8889 BUSH, primary gear, front 1 1992 on; 1275 models.
39 22G109 BUSH, primary gear, rear 1 ‘Top hat’ bush.
Once fitted, the primary gear bushes must be machined to ensure alignment with each other. Confusion
often reigns over the convention for naming primary gear bushes. Which should be called the front bush
and which should be the rear The answer is the bush closer to the front of the engine (i.e. the water
pump end) is the front bush and the bush on the torque converter end (the ‘top hat’ bush) is the rear
bush.
40 22A321 WASHER, thrust, primary gear, front, 1 1965-92; 848 and 998 models.
0.110-0.112" (2.79-2.84mm)
22A322 WASHER, thrust, primary gear, front, 1 1965-92; 848 and 998 models.
0.112-0.114" (2.84-2.89mm)
22A323 WASHER, thrust, primary gear, front, 1 1965-92; 848 and 998 models.
0.114-0.116" (2.89-2.94mm)
22A324 WASHER, thrust, primary gear, front, 1 1965-92; 848 and 998 models.
0.116-0.118" (2.94-2.99mm)
22A450 WASHER, thrust, primary gear, front, 1 1965-92; 848 and 998 models.
0.118-0.120" (2.99-3.04mm)
DAM6490 WASHER, thrust, primary gear, front, 1 1992 on; 1275 models.
0.112-0.114" (2.84-2.89mm)
DAM6486 WASHER, thrust, primary gear, front, 1 1992 on; 1275 models.
0.114-0.116" (2.89-2.94mm)
DAM6487 WASHER, thrust, primary gear, front, 1 1992 on; 1275 models.
0.116-0.118" (2.94-2.99mm)
DAM6488 WASHER, thrust, primary gear, front, 1 1992 on; 1275 models.
0.118-0.120" (2.99-3.04mm)
DAM6489 WASHER, thrust, primary gear, front, 1 1992 on; 1275 models.
0.120-0.122" (3.04-3.09mm)
41 22A319 WASHER, thrust, primary gear, rear 1
42 88G549 RING, backing 1
43 22A1242 GEAR, idler, with 3/4" shaft dia. 1 1965-82 approx.
DAM5165 GEAR, idler, with 7/8" shaft dia. 1 1982 approx. on; A Plus gears .
44 22A1546 WASHER, thrust, idler gear 2 1965-82 approx. (3/4” int. dia.).
0.130-0.131" (3.30-3.32mm)
22A1545 WASHER, thrust, idler gear 2 1965-82 approx. (3/4” int. dia.).
0.132-0.133" (3.35-3.37mm)
22A1547 WASHER, thrust, idler gear 2 1965-82 approx. (3/4” int. dia.).
0.134-0.135" (3.40-3.42mm)
22A1548 WASHER, thrust, idler gear 2 1965-82 approx. (3/4” int. dia.).
0.136-0.137" (3.45-3.47mm)
22A1549 WASHER, thrust, idler gear 2 1965-82 approx. (3/4” int. dia.).
0.138-0.139" (3.50-3.53mm)
DAM4822 WASHER, thrust, idler gear 2 1982 approx. on, A Plus gears
0.132-0.133" (3.35-3.37mm) (7/8” int. dia.).
DAM4823 WASHER, thrust, idler gear 2 1982 approx. on, A Plus gears
0.134-0.135" (3.40-3.42mm) (7/8” int. dia.).
DAM4824 WASHER, thrust, idler gear 2 1982 approx. on, A Plus gears
0.136-0.137" (3.45-3.47mm) (7/8” int. dia.).
DAM4825 WASHER, thrust, idler gear 2 1982 approx. on, A Plus gears
0.138-0.139" (3.50-3.53mm) (7/8” int. dia.).
45 22A1265 GEAR, input 1 1965-82 approx.
DAM5164 GEAR, input 1 1982 approx. on; A Plus gears .
46 22A1266 SHIM, input gear, 0.003" (0.076mm) A/R
22A1267 SHIM, input gear, 0.012" (0.305mm) A/R
47 22A624 WASHER, abutment 1
48 510618A NUT, nyloc, input gear 1
Tel. 01249 721421 Fax. 01249 721316 www.somerford-mini.co.uk
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