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Home
Catalogues
Classic Mechanical Parts Manual
Transmission and Gearshift
A Type Gears
'A' Type Gears
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Index
Label
Part No
Description
Quantity
Comments
1
22A377
Reverse gear
1
C.W.E
2
88G209
Reverse gear shaft
1
N.L.A
3
2A3475
Reverse gear bush
1
N.L.A
4
C-22A1731
Layshaft, (Hi spec alternative) was 22A1371
1
5
22G76
Laygear for 997cc to 9FSA 28575
1
N.L.A
5
22G197
Laygear for 997cc to 9FSA 28576 on - 997cc
1
N.L.A
5
22G204
Laygear but uses B type, 1st & reverse 22A1021/22G202
1
N.L.A - All Cooper and ‘S’
5
22A381
Laygear 850cc
1
N.L.A
6
88G396
Layshaft bearings
2
7
22G277
Spacer sleeve for bearing
1
C.W.E
8
22G278
Internal circlips for laygear
2
C.W.E
9
88G324
Laygear small thrust washer
1
N.L.A
10
88G325
Laygear large thrust washer .123”-124”
1
C.W.E
10
88G326
Laygear large thrust washer .125”-126”
1
N.L.A
10
88G327
Laygear large thrust washer .127”-128”
1
N.L.A
11
22A416
1st motion shaft to 9F/SA 28575 - 997 only
1
N.L.A
11
22A588
1st motion shaft (19 teeth) 85Occ
1
N.L.A
11
22A592
1st motion shaft (20 teeth) for 22G204 laygear
1
N.L.A - Cooper ‘S’
12
2A3709
1st motion ball bearing
1
13
2A3711
Clip for 1st motion ball bearing
1
N.L.A
14
22G70
3rd motion shaft (mainshaft)
1
N.L.A
15
2A3712
Mainshaft double ball bearing, early pre 1962 - 62mm diameter
1
N.L.A
15
AAU1365
Mainshaft double ball bearing
1
65mm diameter
16
ADU4992
Spring ring for double ball bearing was 22G721
1
N.L.A
17
22G440
1st/2nd synchronizer gear hub
1
N.L.A
18
BLS107
Synchronizer ball
3
Per hub
19
22A367
Synchronizer spring
3
C.W.E - Per hub
20
22G2033
Baulk ring
3
21
22G194
2nd gear (28 teeth) fits 22G204 laygear
1
N.L.A
21
22A582
2nd gear (28 teeth) 850cc/997cc
1
N.L.A
22
2A3298
Bush for 2nd gear
1
N.L.A
23
22A415
3rd gear to 9F/SA 28575--997cc
1
N.L.A
23
22G195
3rd gear (24 teeth) 997/998cc 9F/SA 28576 on
1
N.L.A - all ‘S’ 22G204 laygear
23
22A583
3rd gear (23 teeth) 850cc
1
C.W.E
24
2A3290
Bush for 3rd gear
1
N.L.A
25
22G97
3rd/4th synchronizer assembly, was 22G358
1
N.L.A
26
2A3545
1st motion drive gear, use
22G849
with spacer
C-STR239
1
22G849
C.W.E
27
DAM4000
Locktab
1
28
2A3548
Nut for 1st motion shaft
1
29
22G943
Idler gear, shaft size .750” (19mm)
1
Was equal shaft length
30
22A1545
Idler gear thrust washer .130”-131” (3.30-3.32mm)
1
Green coding
30
22A1546
Idler gear thrust washer .132”-133” (3.35-3.37mm)
1
Black coding
30
22A1547
Idler gear thrust washer .134”-135” (3.40-3.42mm)
1
White coding
30
22A1548
Idler gear thrust washer .136”-137” (3.45-3.47mm)
1
Blue coding
30
22A1549
Idler gear thrust washer .138”-139” (3.50-3.53mm)
1
Red coding
31
22A399
Final drive pinion
1
3.76 ratio
32
DAM6140
Locktab
1
33
22G48
Mainshaft nut
1
34
DAM2377
Locktab
2
35
2A3714
Locating plate shim .003” thou, use
GUG705645GM
1
C.W.E
35
2A3715
Locating plate shim .010” thou, use
GUG705646GM
1
C.W.E
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Index
Most of the gears are no longer available, part numbers for reference only.
Diff Ratio
Mini
Mini Pinion No.1
Mini Spindle No.8
Teeth
Colour
Part No.
Teeth
Colour
Part No.
2-76
1275CC MPI (Special pairing 15x7)
15
Black
TXD10004
7
Yellow
TXF10001
2-95
998cc - Mini City E - Engine no. 99H 997P
17
Plain
22A1881
7
Blue
DAM6028
3-1
12”wheel - 998cc high comp. Ratio & 1275cc 1990-96 except Cooper SPI
17
Plain
22A1881
7
Blue
DAM6028
3-1
Cooper SPI only (special pairing 18x7)
18
Grey
TXD10006
7
Red
TXF10004
3-2
ERA turbo Mini
16
Yellow
DAM8074
5
Red
22G2022
3-4 & 3-76
All Mini pre 1984, 1275GT with 10” & 12”wheels and 3.65 ratio
17
Plain
22A1881
6
2A3720
3-4
12”wheel, 998cc - 1984on, low comp. Plus F16 high compression engine
16
Green
DAM2905
6
2A3720
Metro
Metro Pinion No.1
Metro Spindle No.8
DIFF RATIO
Notes
Teeth
Colour
Part No.
Teeth
Part No.
Pre 1984
18 teeth
Red
22G2024
5 teeth
22G2022
3-64
998cc except economy
17 teeth
Green
DAM2904
5 teeth
22G2022
3-44
998cc HLE / 1275cc
18 teeth
Blue
DAM6365
6 teeth
2A3720
3-1
998cc / 1275cc economy
1984 to 1988-99H/A,B,C Eng No
18 teeth
Red
22G2024
5 teeth
22G2022
3-64
18 teeth
Blue
DAM6365
6 teeth
2A3720
3-1
Economy
99H/D,E engine numbers 1988 on
18 teeth
Red
DAM8079
5 teeth
22G2022
3-64
18 teeth
Blue
DAM8075
6 teeth
2A3720
3-1
12H/A,B,C engine numbers - 1984 to 1988
17 teeth
Green
DAM2904
5 teeth
22G2022
3-44
MG and standard
17 teeth
Plain
22A1881
6 teeth
2A3720
2-95
Economy
16 teeth
Green
DAM2905
5 teeth
22G2022
3.2
MG Turbo
12H/D engine numbers 1988 on
17 teeth
Green
DAM8073
5 teeth
22G2022
3-44
MG/Sport/GTA - 13” wheels
17 teeth
Plain
DAM8078
6 teeth
2A3720
2-95
Economy
16 teeth
Yellow
DAM8074
5 teeth
22G2022
3-2
MG Turbo - 13” wheels
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