• 25 Clutch26
• 26 Manual transmission523
• 27 Automatic transmission46
• 29 Pedal assembly10
• 31 Frame, trailer operation45
• 32 Suspension47
• 33 Front axle66
• 35 Rear axle137
• 40 Wheels, chassis alignment check39
• 41 Propeller shaft16
• 42 Brakes - hydraulic and mechanical systems27
• 43 Brakes - pneumatic system and auxiliary brakes9
• 46 Steering100
• 54 Electrical system, equipment and instruments7
• 55 Auxiliary drive systems, hydraulic and linkage systems1
• 57 Central lubrication system3