- 25 Clutch30
- 26 Manual transmission21
- 27 Automatic transmission140
- 29 Pedal assembly7
- 31 Frame, trailer operation7
- 32 Suspension14
- 33 Front axle52
- 35 Rear axle206
- 40 Wheels, chassis alignment check12
- 41 Propeller shaft2
- 42 Brakes - hydraulic and mechanical systems90
- 43 Brakes - pneumatic system and auxiliary brakes15
- 46 Steering61
- 54 Electrical system, equipment and instruments24