Navistar WorkStar Series, Operator'S Manual

Page: 211 / 258

Maintenance Instructions
Irregular Wear
If irregular wear is present, check the axle alignment, tire
pressure, wheel balance, shock and suspension component
condition, and wheel bearing end play.
This condition not only shortens tire life, but will adversely affect
the handling of your vehicle.
Rotating tires from one wheel position to another is a way often
used to even out many types of irregular wear or to avoid it
altogether. See Tires – Rotation for more information. Some
of the more effective tire rotation programs are:
Irregular wear can be minimized by:
• Using the right inflation pressure for the load being carried.
• Maintaining proper front wheel alignment - especially toe-in
- to specifications.
• Maintaining proper tire and wheel balance.
• Maintaining shock absorbers and suspension components.
• Maintain proper wheel bearing adjustment .
Use of Tire Chains
Refer to chain manufacturer’s recommendation for correct tire
chain usage, installation, and removal.
Wheels
Wheel and Wheel Nut Maintenance and Installation
WARNING
To prevent personal injury or death, always
follow these instructions when mounting tires on
wheels:
• Only personnel that have had proper training and
experience should mount or remove tires from rims or
wheels.
• Use only heavy-duty rims or approved rims for radial
tires. It may be necessary to contact your wheel and
rim distributor to determine if your rims are approved
for radial tires.
• If a tube is to be used, make sure special radial tire
tubes are used because of the increased flexing of the
sidewalls on radial tires.
• Never use anti-freeze, silicones, or petroleum based
lubricants when mounting radial tires.
Only an
approved lubricant should be used as an aid for
mounting tires.
• Always inflate tires in a safety cage.
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