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Home>Make: Norton>1975 Norton Commando 850 Mk3>Gearbox>Gearbox, Sprocket, Mounting Bolts

1975 Norton Commando Mk3 Gearbox, Sprocket, Mounting Bolts
1975 Norton Commando 850 Mk3 Gearbox: Shell, Gear Cluster, Sprocket, Mounting Bolt
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Plate #Part NamePart #Qty FittedDescription
1Gearbox Shell0652071
2Gearbox Drain Bolt040138M13/8" BSF, magnetic.
3Gearbox Drain Bolt Washer00020013/8" fibre.
4Washer60232213/8" plain.
5Gearbox Cam Spindle Bush0400561Ream after fitting.
6Gearbox Quadrant Bush0652091
7Gearbox Inner Cover Stud0400642
8Gearbox Inner Cover Stud0002715Short.
9Gearbox Cover Dowel0005772Fits inner and outer.
10Sleeve Gear Bearing0400981RLS9 1-1/4", steel caged, shielded one side.
11Sleeve Gear Bearing Oil Seal0401321Rubber cased, this seals better.
12Layshaft Bearing0401001Ball, original type, unshielded.
13Mainshaft0603841With circlip groove.
14Mainshaft 1st Gear040026114 teeth, splined.
15Mainshaft 2nd Gear064640118 teeth, less bush.
16Mainshaft 2nd Gear Bush0400481It should slide in the gear, and yes, it should be loose.
17Mainshaft 3rd Gear040635121 teeth, splined.
18Mainshaft 4th Gear065954123 teeth, sleeve gear complete with bushes.
19Sleeve Gear Bush0662032Long.
20Sleeve Gear Bush Circlip0649892
21Layshaft0666661Stronger type.
22Layshaft 1st Gear040115128 teeth, complete with bush.
23Layshaft 1st Gear Bush0400461Press fit, ream after fitting.
24Layshaft 2nd Gear064639123 teeth.
25Layshaft 3rd Gear, 20T040634120 teeth, less bush.
26Layshaft 3rd Gear Bush0400471It should slide in the gear, and yes, it should be loose.
27Layshaft 4th Gear, 18T061058118 teeth, splined, fits with 23 teeth SL gear.
28Quadrant & Cam Spindle O-Ring0401293
-Quadrant & Cam Spindle Shim0680941For o-ring.
29Quadrant & Cam Spindle Bolt0401361Domed head.
30Quadrant & Cam Spindle Washer00017415/16", large OD.
31Gearbox Sprocket, 19T040480119 teeth, chain pitch 5/8" x 3/8".
32Gearbox Sprocket, 20T060931AR20 teeth, chain pitch 5/8" x 3/8".
33Gearbox Sprocket, 21T060721AR21 teeth, chain pitch 5/8" x 3/8".
34Gearbox Sprocket, 22T060759AR22 teeth, chain pitch 5/8" x 3/8".
35Gearbox Sprocket, 23T063420AR23 teeth, chain pitch 5/8" x 3/8".
36Gearbox Sprocket, 24T063421AR24 teeth, chain pitch 5/8" x 3/8".
37Gearbox Sprocket Spacer0401311
38Gearbox Sprocket Nut0400701Left hand thread.
39Gearbox Sprocket Nut Lock Washer0400761For nut 040070.
40Gearbox Sprocket Nut Lock Screw0004501
41Gearbox Top Bolt0646971Short, fits from right.
42Gearbox Top Bolt Washer00001319/16" thin.
43Gearbox Top Bolt Spacer0300231On left hand side.
44Gearbox Top Bolt Nut0647301For top bolt.
45Gearbox Pivot Stud0605971Bottom mounting AMC gearbox.
46Gearbox Pivot Stud Washer60232421/2" plain.
47Gearbox Pivot Stud Nut14030521/2" UNF plain.
48Neutral Indicator Switch0653901
49Locknut14040313/8" UNF thin.
50Sealing Ring0663641Drain bolt seal, Dowty with rubber seal.