- 25 Clutch71
- 26 Manual transmission293
- 27 Automatic transmission9
- 29 Pedal assembly14
- 31 Frame, trailer operation3
- 32 Suspension21
- 33 Front axle24
- 35 Rear axle20
- 40 Wheels, chassis alignment check50
- 41 Propeller shaft6
- 42 Brakes - hydraulic and mechanical systems95
- 43 Brakes - pneumatic system and auxiliary brakes4
- 46 Steering16
- 54 Electrical system, equipment and instruments41