Figure 29
Figure 30
Figure 31
Figure 32
Heavy-Duty Operation
If vehicle is subjected to conditions listed below,
maintenance should be performed twice as frequently.
• Desert operation
• Cold climate operation (below 0° C)
•Trailer or 5th wheel towing
• Frequent operation on dusty roads
• Frequent operation under maximum vehicle gross
weight
• Construction work
• After extended operation in mud, sand, water or
similar dirty conditions, have your brakes
inspected and cleaned and drive axle joints
greased as soon as possible. This will prevent any
abrasive material from causing excessive wear.
• Under frequent heavy duty operating conditions,
lubricate all grease fittings and inspect air cleaner
daily to prevent excessive wear.
Using Bed Safety Support
(Fig. 33 & 34)
Many of the subjects covered in this maintenance
section require raising and lowering the bed. The
following precautions must be taken or serious injury
or death could result.
Important
37
Only qualified and authorized personnel shall be
permitted to maintain, repair, adjust or inspect the
vehicle.
Avoid fire hazards and have fire protection
equipment present in the work area. Do not use an
open flame to check level or leakage of fuel, battery
electrolyte or coolant. Do not use open pans of fuel
or flammable cleaning fluids for cleaning parts.
CAUTION