• 25 Clutch13
• 26 Manual transmission153
• 27 Automatic transmission1
• 28 Transfer case3
• 31 Frame, trailer operation7
• 32 Suspension7
• 33 Front axle23
• 35 Rear axle51
• 40 Wheels, chassis alignment check2
• 41 Propeller shaft11
• 42 Brakes - hydraulic and mechanical systems24
• 43 Brakes - pneumatic system and auxiliary brakes3
• 46 Steering83
• 54 Electrical system, equipment and instruments40
• 55 Auxiliary drive systems, hydraulic and linkage systems2