5-2
F-823-0216 Edition
TROUBLESHOOTING GUIDE
Tires - Wheels - Suspension
Most tire, wheel, and suspension related problems are
due to excessive loads, extreme conditions, and
improper maintenance. Tire, wheel, and suspension
problems can be easily detected and solved by checking
the following guide. For maintenance procedures, refer to
the following sections:
• “Hydraulic System” on page 4-7
• “Alignment” on page 4-13
• “Hub and Drum Maintenance” on page 4-23
• “Wheel Bearing Lubrication and Adjustment” on
• “Tire Maintenance” on page 4-25
PROBLEM
PROBABLE CAUSE
SOLUTION
VIBRATIONS WHILE DRIVING
Improper tire inflation
Inflate to proper pressure
Tires cupped or have flat spots
Replace tires.
Wheels bent or loose
Replace or tighten.
Tires incorrectly mounted
Remount
Mud in wheels
Clean wheels.
Tire(s) out of balance
Balance tires.
Brakes dragging
Locate cause and repair.
Object(s) stuck between duals
Remove object(s).
RAPID TIRE WEAR/DETERIORATION:
CENTER TREAD WEAR
Over inflation
Deflate to correct inflation
SHOULDER TREAD WEAR - BOTH
SHOULDERS
Under inflation
Increase inflation to correct PSI. Check
axle alignment
Overload
Loads are above rated tire capacity. DO
NOT load above rated tire capacity.
SHOULDER TREAD WEAR - ONE
SHOULDER
Axle damage
Axles not parallel
Check axle alignment.
OVERALL TREAD WEAR
Overloading
Check tire load rating.
High speeds
Adjust speed according to road and load
conditions.
Incorrect dual matching
Properly match dual tires
TIRE FLAT SPOTS
Quick stops
Adjust braking practices.
Grabbing brakes
Adjust brakes properly
Worn or loose wheel bearings
Adjust or replace as needed
and Drum Maintenance” on
page 4-23.)
Out of balance wheels and tire
Balance wheels and tires.
Check ABS system function.
UNEVEN WEAR
Suspension bushings worn
Replace bushings
Drum Maintenance” on page 4-23.)
Worn or loose wheel bearings
Adjust or replace as needed.
Out of balance wheels and tires
Balance wheels and tires.
RIM FAILURE*:
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