- 25 Clutch9
- 26 Manual transmission104
- 27 Automatic transmission3
- 28 Transfer case1
- 31 Frame, trailer operation1
- 32 Suspension8
- 33 Front axle66
- 35 Rear axle81
- 40 Wheels, chassis alignment check8
- 41 Propeller shaft3
- 42 Brakes - hydraulic and mechanical systems60
- 43 Brakes - pneumatic system and auxiliary brakes3
- 46 Steering85
- 54 Electrical system, equipment and instruments9