• 25 Clutch75
• 26 Manual transmission44
• 27 Automatic transmission7
• 29 Pedal assembly4
• 31 Frame, trailer operation3
• 32 Suspension22
• 33 Front axle24
• 35 Rear axle19
• 40 Wheels, chassis alignment check50
• 41 Propeller shaft3
• 42 Brakes - hydraulic and mechanical systems124
• 43 Brakes - pneumatic system and auxiliary brakes26
• 46 Steering68
• 54 Electrical system, equipment and instruments40
• 55 Auxiliary drive systems, hydraulic and linkage systems30