Peterbilt Model 320 Operator's Manual after 8-07 - Peterbilt Motors ...

PART 8: MAINTENANCE AND SERVICE
Steering
Guidelines For Checking A Steering
System
WARNING! A steering system that is not working
properly can cause an accident. You could
lose control of your vehicle if the steering is
not in good order. For driving safety, give your
steering gear and components the following visual
checks frequently. Check them especially
after trips over rough roads.
• Check tie-rod for straightness
• Check draglink clamp for looseness or interference
• Check ball joints and steering U-joints for looseness
• Check steering wheel for excessive freeplay. Check
the simplest probable causes first:
– Unequal tire pressures
– Loose cap nuts
– Bent tie-rod
– Loose wheel bearing
Guidelines For Checking A Steering System
If these checks do not reveal the problem, or if you correct
them and still have a steering problem, take your vehicle to
an authorized dealer for evaluation.
Front End Alignment
For driving safety and comfort, and to prolong the life of
your vehicle, it is important to have proper front end alignment.
Check tire wear frequently. Uneven tire wear is a
sign that your front end or rear axles may be misaligned.
If you see uneven wear, take your vehicle to a service center
familiar with aligning Peterbilt vehicles.
Rear Axle Alignment
Continual road shock and load stresses may force your rear
axles out of alignment. If you detect rapid tire wear on front
or rear axle tires, you may have misaligned axles. If you
suspect you do, have your rear axle alignment checked and
adjusted by an authorized dealership.
U-Bolt Tension for Front and Rear Axles
It is important that U-bolts remain tight. Off-highway use
of your vehicle will cause them to loosen faster. But all
vehicles need to have their U-bolts checked and tightened
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