Gearbox inner spares & parts for Triumph 1973-85 750 twin models
Key | Part Number | Description | Per | Models |
NI | 57-4790 | Circlip, layshaft high gear | A | 1978-85 All |
NI | 57-7046 | Distance tube neutral switch | 1 | 1979 All |
NI | 57-7069 | Spacer | 1 (2 for TS8) | 1982-83 TSS & TSX |
1 | 00-0082 | Gearbox inner cover | 1 | 1985 T140 |
1 | 57-4795 | Inner cover assembly, right foot change | 1 | 1973-75 All |
1 | 57-7001 | Gearbox inner cover | 1 | 1976-77 (later models), 1978 All |
1 | 57-7013 | Gearbox inner cover | 1 | 1976-77 (not later models) |
1 | 57-7049 | Gearbox inner cover assembly | 1 | 1979-83 All (not TSX) |
1 | 57-7074 | Gearbox inner cover | 1 | 1982-83 TSX |
1 | 57-7078 | Gearbox inner cover | 1 | 1982-83 TS8 |
2 | 57-1614 | Needle roller | 1 | 1973-85 All |
3 | 57-0412 | Gearchange spindle bush | 1 | 1973-75 All |
3 | 57-7009 | Bush, gear change | 1 | 1976-85 All |
4 | 57-0045 | Buffer, kickstart stop | 1 | 1973-85 All |
5 | 57-1607 | Thrust washer, layshaft | 1 | 1985 T140 |
5 | 57-1607 | Thrust washer, layshaft | 2 | 1973-83 All |
6 | 57-0989 | Dowel | 4 | 1973-85 All |
7 | 21-2149 | Stud 5/16 UNF/UNC 3″ | 2 | 1973-85 All |
8 | 14-6217 | Bolt 5/16 UNC x 1 1/4 | 1 | 1982-83 TSX |
8 | 14-7020 | Screw – UNC 5/16 x 1 cap head | 1 | 1985 T140 |
8 | 21-1907 | Gearbox inner cover | 1 | 1973-83 All (not TSX) |
9 | 70-3446 | Washer, Engine mount rear | 1 | 1973-85 All |
10 | 14-6608 | Case screw 1/4 UNC x 1″ Pozidrive | 1 | 1973-85 All |
11 | 14-7023 | Cap head screw 5/16 UNC x 1-3/4 | 1 | 1973-85 All |
12 | 57-4624 | Camplate | 1 | 1973-77 (not later models) |
12 | 57-4889 | Camplate | 1 | 1976-77 (later models), 1978-85 All |
13 | 57-4363 | Operating quadrant | 1 | 1973-77 (not later models) |
13 | 57-7019 | Operating quadrant | 1 | 1976-77 (later models), 1978-79 All |
13 | 57-7052 | Quadrant | 1 | 1980-85 All |
14 | 57-1896 | Quadrant spindle | 1 | 1973-75 All |
14 | 57-7011 | Quadrant spindle | 1 | 1976-85 All |
15 | Reference only | Split pin 5/64 x 1 3/8″ | A | 1973-77 All |
16 | 57-3989 | Selector spindle | 1 | 1973-85 All |
17 | 57-3660 | Index plunger, camplate sharper point | 1 | 1973-77 (not later models) |
17 | 57-7020 | Plunger | 1 | 1976-77 (later models), 1978-85 All |
18 | 57-4459 | Plunger spring | 1 | 1973-85 All |
19 | 57-4400 | Plunger housing | 1 | 1973-85 All |
20 | 57-3978 | Washer, 5/8 x 15/16 x 1/32, ally | 1 | 1973-85 All |
21 | 57-7012 | Gasket inner gearbox | 1 | 1976-85 All |
21 | 71-3096 | Gasket, inner gearbox cover | 1 | 1973-75 All |
22 | 57-4364 | Selector fork, mainshaft 4th gear | 1 | 1973-85 All |
23 | 57-4366 | Operating fork, 5 speed layshaft 3rd gear | 1 | 1973-85 All |
24 | 57-4660 | Selector, layshaft 1st gear | 1 | 1973-85 All |
25 | 37-3761 | ‘O’ ring – brake tappet | 1 | 1976-85 All |
26 | 57-7015 | Alloy plug | 1 | 1976-85 All |
27 | 57-7016 | Retainer | 1 | 1976-85 All |
28 | 57-7041 | Operating pin | 1 | 1979-83 All |
29 | 60-7180 | Switch | 1 | 1979 All |
29 | 60-7240 | Switch | 1 | 1980-85 All |
30 | 70-1335 | Sealing washer | 1 | 1979-85 All |
31 | 22-0020 | Locknut | 1 | 1985 T140 |
32 | 60-3500 | Oil seal, sleeve gear and cover plate | 1 | 1973-83 All |
33 | 70-3789 | Gear box sprocket cover | 1 | 1973-83 All |
34 | 57-4628 | Mainshaft high gear assembly | 1 | 1973 All |
34 | 57-4781 | Mainshaft high gear assembly | 1 | 1974-77 All |
34 | 57-4779 | High gear assembly | 1 | 1978-85 All |
35 | 60-3511 | Needle roller | 2 | 1973-85 All |
36 | 60-3500 | Oil seal, sleeve gear and cover plate | 1 | 1973-85 All |
37 | 57-4432 | Mainshaft | 1 | 1973-82 All (not TSS & TSX) |
37 | 57-7077 | Gearbox mainshaft | 1 | 1982-83 TSS & TSX, 1985 T140 |
37a | 57-4432A | 5 Speed Gearbox Conversion Kit | 1 | 1973-82 All (not TSS & TSX) |
38 | 57-3988 | Clutch rod bush | 1 | 1973-85 All |
39 | 57-4376 | 4th gear, mainshaft, 5 speed box | 1 | 1973-85 All |
40 | 57-4377 | 3rd gear, mainshaft 18T | 1 | 1973-85 All |
41 | 57-4379 | Bush | A | 1976-77 (later models) |
41 | 57-4575 | Bush, 3rd gear, 5 speed | A | 1973-77 (not later models) |
42 | 57-4653 | Mainshaft, 1st and 2nd gear | 1 | 1973-85 All |
43 | 57-4548 | Layshaft | 1 | 1973 All |
43 | 57-4783 | Gearbox sprocket 19T | 1 | 1982 TR65 |
43 | 57-4900 | Layshaft assembly | 1 | 1974-85 All (not TR65) |
44 | 57-4550 | Layshaft high gear | A | 1973-77 (not later models) |
44 | 57-4791 | Layshaft high gear | A | 1976-77 (later models), 1978-85 All |
45 | 57-4384 | 4th gear, Layshaft in 5 speed gearbox | A | 1973-77 (not later models) |
45 | 57-4787 | 4th gear, layshaft | A | 1976-77 (later models), 1978-85 All |
46 | 57-4647 | Layshaft, 3rd gear | 1 | 1973-85 All |
47 | 57-4657 | Layshaft, 2nd gear | 1 | 1973-85 All |
48 | 57-4659 | Bush | 1 | 1976-77 (later models) |
48 | 57-4662 | Bronze bush, layshaft 2nd gear | 1 | 1973-77 (not later models) |
49 | 57-4654 | Layshaft, 1st gear | 1 | 1973-85 All |
50 | 57-4656 | Bush | 1 | 1976-77 (later models) |
50 | 57-4663 | Bush | 1 | 1973-77 (not later models) |
51 | 60-3494 | Circlip, 5 speed gearbox | 1 | 1973-85 All |
52 | 57-4661 | Driving dog, gearbox | 1 | 1973-85 All |
53 | 57-4533 | Gearbox sprocket 20T | 1 | 1973 All |
53 | 57-4782 | Sprocket, gearbox 20T | 1 | 1974-83 All |
53 | 57-4783 | Gearbox sprocket 19T | 1 | 1985 T140 |
53 | 57-7067 | Gearbox sprocket, 5 speed, 21T | 1 | 1982-83 TS8 |
54 | 57-4396 | Nut, gearbox sprocket | 1 | 1973-85 All |
55 | 57-4395 | Sprocket lockwasher | 1 | 1973 All |
55 | 57-4909 | Tab washer | 1 | 1974-85 All |
56 | 70-0489 | Circlip | 1 | 1973-85 All |
57 | 60-3552 | Bearing | 1 | 1973-85 All |
58 | 57-4113 | Bearing circlip, 5 speed gearbox | 1 | 1973-85 All |
59 | 57-1962 | Washer 3/4 x 1-1/8 x 1/16 | 1 | 1973-85 All |
60 | 57-1963 | Bush | 1 | 1973-85 All |
61 | 57-1250 | Spring | 1 | 1973-85 All |
62 | 57-0730 | Kickstart pinion | 1 | 1973-85 All |
63 | 57-0731 | Ratchet | 1 | 1973-85 All |
64 | 57-2240 | Kickstart nut tab washer, 9/16 bore | 1 | 1973-82 All (not TSS & TSX) |
64 | 57-7076 | Kickstart nut tab washer, 5/8 bore | 1 | 1982-83 TSS & TSX, 1985 T140 |
65 | 21-0594 | Kickstart ratchet nut 9/16 UNF | 1 | 1973-82 All (not TSS & TSX) |
65 | 21-7072 | Nut, gearbox mainshaft | 1 | 1982-83 TSS & TSX, 1985 T140 |
66 | 57-1736 | Clutch pushrod 7/32 x 12-7/8 | 1 | 1973-85 All |
67 | 71-1070 | ‘O’ ring oil filter cap | 1 | 1974-85 All |
68 | 60-3512 | Sprocket oil seal, 5 speed | 1 | 1973-85 All |
69 | 60-4100 | Gearbox bearing | 1 | 1978-85 All |
70 | 57-1606 | Needle roller bearing | 1 | 1985 T140 |
71 | 57-1607 | Thrust washer, layshaft | 1 | 1985 T140 |
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