• 25 Clutch24
• 26 Manual transmission10
• 27 Automatic transmission42
• 29 Pedal assembly11
• 31 Frame, trailer operation45
• 32 Suspension32
• 33 Front axle53
• 35 Rear axle1
• 40 Wheels, chassis alignment check32
• 41 Propeller shaft4
• 42 Brakes - hydraulic and mechanical systems18
• 43 Brakes - pneumatic system and auxiliary brakes31
• 46 Steering30
• 54 Electrical system, equipment and instruments5
• 55 Auxiliary drive systems, hydraulic and linkage systems1
• 57 Central lubrication system2