• 25 Clutch55
• 26 Manual transmission377
• 27 Automatic transmission129
• 28 Transfer case1
• 29 Pedal assembly16
• 31 Frame, trailer operation45
• 32 Suspension36
• 33 Front axle53
• 35 Rear axle153
• 40 Wheels, chassis alignment check33
• 41 Propeller shaft16
• 42 Brakes - hydraulic and mechanical systems28
• 43 Brakes - pneumatic system and auxiliary brakes34
• 46 Steering87
• 54 Electrical system, equipment and instruments8
• 55 Auxiliary drive systems, hydraulic and linkage systems1
• 57 Central lubrication system2