Usual Trouble Of The Tire - Chery automobile Service Manual

final assy imbalance is expected to be less than 100g·cm, approximately equal to a 5g
balance block on the inside and outside brims of the rim.
Precaution: No more than one balance block with 70g weight at most is allowed to
set on each side of a wheel. Avoid over hitting on the balance block. If that happened,
replace it immediately. Do not reuse the replaced balance block.
----During installing the wheel and the tire assy, pre-screw the wheel bolt on the rim by hand
first, and then tighten the screws with the special purpose tools under the way of diagonal
method, (the tightening torque is 100 10N·m). No impact wrench is allowed in order to
avoid screwing too tight or loose. Do not use lubricating grease while installing the wheel
bolt. (The wheel bolt should be tightened to maintain the tightening torque after the initial
100km driving since the new installation of the wheel and tire assy. The check of the
tightening torque of the wheel bolt is one of the daily service items.)
----Decussating method is adopted to tighten the set nut. The tightening degrees should be
similar so that the wheels can turn freely. The wheel should stand on the ground during
the last tightening.
----Install the trim cover or place it as required. Clip trim cover should be installed into
through beating by hand or prying by rubber tools.
USUAL TROUBLES OF THE TIRE
Proper utilization of the tire
The tire is an important part of the wheel assy. Please pay attention to the following items
while using:
------The tire of the same manufacturer and the same No. should be used on the same vehicle.
------Do not install tires out of the specified types
------Make all the tires wear evenly. In order to remedy and lighten the uneven wear, besides
periodic checking and correcting the parameters of the wheel alignment, the rotation
should be also applied. The specific rotation way depends on the practical wearing status.
It is recommended to adopt the tire rotation at interval of 5000~8000km
Usual troubles of tires and trouble diagnosis
------Wear on shoulder of tire
The wear on shoulder of tire means the brim with burrs forming of the tire wears are more
badly than other parts. The theoretical reason for the wear on shoulder of tire is that the tire
rolls at the limit lateral runout angle.
Main reason: Frequently steering at high speed, improper adjusting the toe-in and the camber,
or often driving on the vaulted or zigzag road.
M-5