- 25 Clutch37
- 26 Manual transmission343
- 27 Automatic transmission109
- 29 Pedal assembly11
- 31 Frame, trailer operation62
- 32 Suspension55
- 33 Front axle86
- 35 Rear axle182
- 40 Wheels, chassis alignment check41
- 41 Propeller shaft5
- 42 Brakes - hydraulic and mechanical systems69
- 43 Brakes - pneumatic system and auxiliary brakes23
- 46 Steering123
- 54 Electrical system, equipment and instruments7
- 55 Auxiliary drive systems, hydraulic and linkage systems1
- 57 Central lubrication system2