Navistar ProStar+, Operation And Maintenance Manual

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Inspection Guide
7. Hub: Check for obvious leaking on outside or inside of
wheel. Inspect axle flanges and wheel seals for leaks
and loose mounting hardware or broken items. Check
lube level, if equipped with sight glass.
8. Spring Suspension: Check condition of spring for
cracks, breaks, or shifting. Inspect spring hanger
fasteners, shackles, U-bolts, and nuts for wear, damage,
and tightness.
9. Torque Rods and Shock Absorbers: Check to see that
torque rods are not cracked, broken, or missing. Check
shock absorbers for cracks or leaks. There should be
no missing or broken mounting bolts or worn bushings.
10. Air Suspension (if equipped): Check for air leaks, loose
components, and damage to air bag. Inspect ride height
valve and linkage for damage.
• Air Lines and Wiring: Check air lines and electrical wiring
for proper security, damage, and chafing.
Listen for
audible air leaks.
Fifth Wheel and Coupling Area
1. Sliding 5th Wheel (if equipped)
2. Lubrication
3. Mounting Bolts and Release Handle
4. Deck Plate and Access Steps
5. Trailer Coupling Cords
6. Work Light(s)
1. Sliding 5th Wheel (if equipped): Check for loose or
missing pins in the slide mechanism. If air powered,
check for air leaks. Make sure that 5th wheel is not so
far forward that tractor frame or mud flaps will strike
trailer landing gear during turns.
2. Lubrication: Make sure that top surface (face) of the 5th
wheel has a coat of grease.
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