Final drive ratios and Five Speed Gearbox
Label Part No Description Quantity Comments
1 22A411 Crownwheel - Teeth - 62 Ratio - 3.444 1
2 22G940 Crownwheel - Teeth - 62 Ratio - 3.647 1
3 22A401 Crownwheel - Teeth - 64 Ratio - 3.765 1 C.W.E
4 22G340 Crownwheel - Teeth - 63 Ratio - 3.938 1 N.L.A
5 22G101 Crownwheel - Teeth - 62 Ratio - 4.133 1
6 22G370 Crownwheel - Teeth - 64 Ratio - 4.267 1 N.L.A
7 22G443 Crownwheel - Teeth - 65 Ratio - 4.33 1 C.W.E
8 22A413 Pinion - Teeth - 18 1
9 22A399 Pinion - Teeth - 17 1
10 22A399 Pinion - Teeth - 17 1
11 22G338 Pinion - Teeth - 16 1
12 22G99 Pinion - Teeth - 15 1 N.L.A
13 22G99 Pinion - Teeth - 15 1 N.L.A
14 22G99 Pinion - Teeth - 15 1 N.L.A
15 CWP3-4 Crownwheel - Teeth - 62 Ratio - 3.444 and Pinion - Teeth - 18 - Pair 1
16 CWP3-6 Crownwheel - Teeth - 62 Ratio - 3.647 and Pinion - Teeth - 17 - Pair 1
17 MSG20 Pre A-plus gearboxes have a 14mm wide end on the mainshaft to fit the 1st motion shaft. Complete gearbox rebuild kit for a pre A-plus series. - Less Differential 1 The kits include all bearings apart from the small plastic encased roller bearings under 1st, 2nd , 3rd gear which are available as [LINK]AAU1815[/LINK] for 1st gear and [LINK]AAU1816[/LINK] for 2nd, 3rd gear.
18 MSG21 Pre A-plus gearboxes have a 14mm wide end on the mainshaft to fit the 1st motion shaft. Complete gearbox rebuild kit for a pre A-plus series. - With Differential 1 The kits include all bearings apart from the small plastic encased roller bearings under 1st, 2nd , 3rd gear which are available as [LINK]AAU1815[/LINK] for 1st gear and [LINK]AAU1816[/LINK] for 2nd, 3rd gear.
19 MSG22 A-plus have a 18mm wide end to fit the 1st motion shaft. Complete gearbox rebuild kit with 2 bearings on laygear. - Less Differential 1 The kits include all bearings apart from the small plastic encased roller bearings under 1st, 2nd , 3rd gear which are available as [LINK]AAU1815[/LINK] for 1st gear and [LINK]AAU1816[/LINK] for 2nd, 3rd gear.
20 MSG23 A-plus have a 18mm wide end to fit the 1st motion shaft. Complete gearbox rebuild kit with 2 bearings on laygear. - With Differential 1 The kits include all bearings apart from the small plastic encased roller bearings under 1st, 2nd , 3rd gear which are available as [LINK]AAU1815[/LINK] for 1st gear and [LINK]AAU1816[/LINK] for 2nd, 3rd gear.
21 MSG24 Early A-plus and all ST original ratio straight cut laygears were made to take 3 bearings. Complete gearbox rebuild kit with 3 bearings on laygear 1 The kits include all bearings apart from the small plastic encased roller bearings under 1st, 2nd , 3rd gear which are available as [LINK]AAU1815[/LINK] for 1st gear and [LINK]AAU1816[/LINK] for 2nd, 3rd gear.
22 DAM3645 Crownwheel - Teeth - 65 Ratio - 4.333 Casting No. DAM3546 1 N.L.A
23 DAM3216 Crownwheel - Teeth - 63 Ratio - 3.938 Casting No. DAM3217 1 N.L.A
24 DAM4132 Crownwheel - Teeth - 62 Ratio - 3.647 Casting No. DAM4163 1 N.L.A
25 DAM4779 Crownwheel - Teeth - 64 Ratio - 3.765 Casting No. DAM4780 1 N.L.A
26 DAM2677 Crownwheel - Teeth - 62 Ratio - 3.444 Casting No. DAM2678 1 C.W.E
27 DAM6327 Crownwheel - Teeth - 59 Ratio - 3.105 Casting No. DAM6243 1 N.L.A
28 DAM2806 Crownwheel - Teeth - 61 Ratio - 3.211 Casting No. DAM2807 1 N.L.A
29 DAM5925 Crownwheel - Teeth - 59 Ratio - 2.95 Casting No. DAM5926 1 N.L.A
30 TCB10004 Crownwheel - Teeth - 58 Ratio - 2.76 Casting No. TCB10005 1 N.L.A
31 DAM3647 Pinion - Teeth - 15 1 C.W.E
32 DAM3218 Pinion - Teeth - 16 1 N.L.A
33 DAM4131 Pinion - Teeth - 17 1 C.W.E
34 DAM4131 Pinion - Teeth - 17 1 C.W.E
35 DAM2679 Pinion - Teeth - 18 1 C.W.E
36 DAM2808 Pinion - Teeth - 19 1 N.L.A
37 DAM2808 Pinion - Teeth - 19 1 N.L.A
38 DAM5927 Pinion - Teeth - 20 1 N.L.A
39 TCC10001 Pinion - Teeth - 21 1 N.L.A
40 CWP3-6-A-PLUS Crownwheel - Teeth - 62 Ratio - 3.647 Casting No. DAM4163 Pinion - Teeth - 17 - Pair 1
41 CWP3-1 Crownwheel - Teeth - 59 Ratio - 3.105 Casting No. DAM6243 Pinion - Teeth - 19 - Pair 1 12” wheel
42 CWP3-2 Crownwheel - Teeth - 61 Ratio - 3.211 Casting No. DAM2807 Pinion - Teeth - 19 - Pair 1 Turbo
43 CWP2-9 Crownwheel - Teeth - 59 Ratio - 2.95 Casting No. DAM5926 Pinion - Teeth - 20 - Pair 1 998C Econ
44 CWP2-76 Crownwheel - Teeth - 58 Ratio - 2.76 Casting No. TCB10005 Pinion - Teeth - 21 - Pair 1
45 MSG04 Five speed A Plus gearboxes with 3.44 final drives. Helical gears - A Plus standard 1
46 MSG05 Five speed A Plus gearboxes with 3.44 final drives. Helical gears with X pin diff - A Plus standard 1
47 MSG06 Five speed A Plus gearboxes with 3.44 final drives. Straight cut gears - Clubman Evolution 1
48 MSG07 Five speed A Plus gearboxes with 3.44 final drives. Straight cut gears with X pin diff - Clubman Evolution 1
49 MSG08 Five speed A Plus gearboxes with 3.44 final drives. Helical gears with X pin diff - Evolution Heavy duty 1
50 MSG09 Five speed A Plus gearboxes with 3.44 final drives. Helical gears with LSD - Evolution Heavy duty 1
51 MSG10 Five speed A Plus gearboxes with 3.44 final drives. Straight cut gears with LSD - Clubman Evolution 1
52 MSG30 Exchange 4 Synchro Gearboxes - Rod Change. 2.9 F/Drive - ‘A’ Plus 1
53 MSG31 Exchange 4 Synchro Gearboxes - Rod Change. 3.1 F/Drive - ‘A’ Plus 1
54 MSG32 Exchange 4 Synchro Gearboxes - Rod Change. 3.2 F/Drive - ‘A’ Plus 1
55 MSG34 Exchange 4 Synchro Gearboxes - Rod Change. 3.4 F/Drive - ‘A’ Plus 1
56 MSG35 Exchange 4 Synchro Gearboxes - Rod Change. 3.4 F/Drive - Pre ‘A’ Plus 1
Final Drive Ratios and Five Speed Gearbox
Available for 1st Ratio 2nd Ratio 3rd Ratio 4th Ratio 5th Ratio
A plus mainshaft gears 3.282 1.966 1.283 1.000 0.882
Evolution ultra close ratio heavy duty gears 2.583 1.644 1.250 1.000 0.865
Evolution Clubman straight cut 2.583 1.710 1.250 1.000 0.865
ST 4 syncro straight cut - Now N.L.A 2.544 1.731 1.258 1.000 0.91 26 teeth


Final Drive Gears Pre ‘A’ Plus
Crownwheel   Teeth Ratio Pinion   Teeth Crownwheel &
Pinion Pair
22A411   62 3.444 22A413   18 CWP3-4
22G940   62 3.647 22A399   17 CWP3-6
22A401 C.W.E 64 3.765 22A399   17  
22G340 N.L.A 63 3.938 22G338   16  
22G101   62 4.133 22G99 N.L.A 15  
22G370 N.L.A 64 4.267 22G99 N.L.A 15  
22G443 C.W.E 65 4.33 22G99 N.L.A 15  

 

Gearbox Rebuild Service Kits
4 Syncromesh gearbox rebuild kits. Includes bearings, gaskets layshaft. Kits with differential parts include planet gears, pin, thrusts and bearings. less differential with differential
Pre A-plus gearboxes have a 14mm wide end on the mainshaft to fit the 1st motion shaft.
Complete gearbox rebuild kit for a pre A-plus series.		 MSG20 MSG21
A-plus have a 18mm wide end to fit the 1st motion shaft
Complete gearbox rebuild kit with 2 bearings on laygear		 MSG22 MSG23
Early A-plus and all ST original ratio straight cut laygears were made to take 3 bearings
Complete gearbox rebuild kit with 3 bearings on laygear		 MSG24  
The kits include all bearings apart from the small plastic encased roller bearings under 1st, 2nd , 3rd gear which are available as AAU1815 for 1st gear and AAU1816 for 2nd, 3rd gear..

 

Final Drive Gears with 'A' Plus Teeth Angles

Crownwheel Teeth Casting No Ratio Pinion Teeth Crownwheel &
Pinion Pair		 Notes
DAM3645 N.L.A 65 DAM3546 4.333 DAM3647 C.W.E 15    
DAM3216 N.L.A 63 DAM3217 3.938 DAM3218 N.L.A 16    
DAM4132 N.L.A 62 DAM4163 3.647 DAM4131 C.W.E 17 CWP3-6-A-PLUS  
DAM4779 N.L.A 64 DAM4780 3.765 DAM4131 C.W.E 17    
DAM2677 C.W.E 62 DAM2678 3.444 DAM2679 C.W.E 18    
DAM6327 N.L.A 59 DAM6243 3.105 DAM2808 N.L.A 19 CWP3-1 12" wheel
DAM2806 N.L.A 61 DAM2807 3.211 DAM2808 N.L.A 19 CWP3-2 Turbo
DAM5925 N.L.A 59 DAM5926 2.95 DAM5927 N.L.A 20 CWP2-9 998C Econ
TCB10004 N.L.A 58 TCB10005 2.76 TCC10001 N.L.A 21 CWP2-76  

'A' Plus type pinions have both sided machined flat.

Five speed A Plus gearboxes with 3.44 final drives, available to order
MSG04 Helical gears A Plus standard
MSG05 Helical gears with X pin diff A Plus standard
MSG06 Straight cut gears Clubman Evolution
MSG07 Straight cut gears with X pin diff Clubman Evolution
MSG08 Helical gears with X pin diff Evolution Heavy duty
MSG09 Helical gears with LSD Evolution Heavy duty
MSG10 Straight cut gears with LSD Clubman Evolution

 

Exchange 4 Synchro Gearboxes - Rod Change
MSG30 2.9 F/Drive 'A' Plus
MSG31 3.1 F/Drive 'A' Plus
MSG32 3.2 F/Drive 'A' Plus
MSG34 3.4 F/Drive 'A' Plus
MSG35 3.4 F/Drive Pre 'A' Plus

Exchange gearboxes must be serviceable with good idler gear housings and casing and the same gear ratio or extra costs will be incurred.

    - No broken case fins.

    - Good drain plug thread.

    - Good idler gear thrust surface.

    - No rust on gears.