• 25 Clutch23
• 26 Manual transmission47
• 27 Automatic transmission8
• 28 Transfer case15
• 29 Pedal assembly9
• 31 Frame, trailer operation11
• 32 Suspension24
• 33 Front axle50
• 35 Rear axle66
• 40 Wheels, chassis alignment check36
• 41 Propeller shaft17
• 42 Brakes - hydraulic and mechanical systems49
• 43 Brakes - pneumatic system and auxiliary brakes18
• 46 Steering42
• 54 Electrical system, equipment and instruments52
• 55 Auxiliary drive systems, hydraulic and linkage systems8