• 25 Clutch19
• 26 Manual transmission11
• 27 Automatic transmission3
• 29 Pedal assembly11
• 31 Frame, trailer operation61
• 32 Suspension25
• 33 Front axle2
• 40 Wheels, chassis alignment check31
• 41 Propeller shaft4
• 42 Brakes - hydraulic and mechanical systems9
• 43 Brakes - pneumatic system and auxiliary brakes7
• 46 Steering17
• 54 Electrical system, equipment and instruments5
• 55 Auxiliary drive systems, hydraulic and linkage systems4
• 57 Central lubrication system2