TIRES AND WHEELS
WARNING
Always maintain your tires in good condition. Frequently check
and maintain correct inflation pressures as specified by the tire
manufacturers. Inspect periodically for abnormal wear patterns
and replace/repair cut or broken tire casing. Always use
experienced, trained personnel with proper equipment and
correct procedures to mount or remove tires. Failure to adhere
to these warnings could result in tire malfunction, damage to the
motor coach, personal injury, and possibly death.
NOTE: Correct inflation pressure should be:
•
Front axle 120 psi.
•
Drive axle 110 psi.
•
Tag axle 120 psi.
•
Spare 120 psi.
Check and maintain the correct inflation pressure for each tire every
morning or when tires are cool. Check tire pressures ONLY when the
tires are cool. Warm or hot tires cause pressure buildup. Do not deflate
a warm tire to specified pressure. Tire thumping during the walk around
inspection will tell you if a tire is deflated, but the only way to check tire
pressure is with an accurate gauge. If any tires are found to be
considerably under inflated, the motor coach should not be driven until
cause of the leak is determined and repairs have been made.
Regular and frequent inspection and proper care will give you the
assurance of safe, reliable tire operation. Most tire wear problems are
caused by under inflation such as a slow leak. Low pressure is a tire's
worst enemy. It allows tires to flex badly and this causes high
temperatures to build up. Heat causes early tire damage, such as flex
breaks, radial cracks, and ply separation. Furthermore, low tire
pressures can affect control of your motor coach, particularly at the
front wheels.
Look for bumps, blisters, cuts, punctures, cracks, uneven wearing, and
tread depth. Verify that lug nuts are tight. Adjust to specifications if
loose.
NOTE: After driving a new motor coach approximately 31 miles (50
Km), an adjustment of the lug nuts should be performed according to
torque specifications. The fastening sequence should be cross
symmetrical. The fastening sequence and torque specifications can be
found in the maintenance section.
*No regrooved tires on the front axle are allowed.
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