• 25 Clutch77
• 26 Manual transmission321
• 27 Automatic transmission13
• 28 Transfer case1
• 29 Pedal assembly30
• 31 Frame, trailer operation51
• 32 Suspension56
• 33 Front axle64
• 35 Rear axle326
• 40 Wheels, chassis alignment check46
• 41 Propeller shaft18
• 42 Brakes - hydraulic and mechanical systems172
• 43 Brakes - pneumatic system and auxiliary brakes41
• 46 Steering111
• 54 Electrical system, equipment and instruments40
• 55 Auxiliary drive systems, hydraulic and linkage systems2
• 57 Central lubrication system3