Maintenance & Adjustment
D760.H03E-001.H1907 193
Inspection of tire pressure and tire tread
1. Use an air pressure gauge to check whether each tire pressure meets the
requirements, and inflate the tire if insufficient.
2. Check if there is any foreign matter attached to the tire tread and remove it if any.
3. Check the depth of tread pattern. Make sure to replace the tire if the depth is less
than1.6 mm (less than 2.4 mm on the freeway). Measure this value at not less than
six points along the tire circle.
4. Under normal operation conditions, inflate the tire according to standard pressure.
Tire Rotation
During the maintenance every 10,000 km, do tire rotation as illustrated. Princi-
ples of tire rotation:
1. For rear axle twin tires, the difference between the outside diameters of the tires
should not exceed 12 mm and the smaller one should be mounted inside.
2. The front wheels should be equipped with tires of the same model with even and
less wear. Do the dynamic balance test on the newly assembled front tires or front
tires whose positions have been changed newly where possible.
3. After tire rotation, the rotating direction of tire should be reverse to that before tire
rotation. The new tires must be used in pairs.
4. The same axle must be equipped with tires of the same specification and tread;
otherwise, pulling to one side while braking, vehicle body swing, and loss of
steering control may ÂșCcur.
5. Check the threads of wheel hub bolt and wheel nut for scratches. For the sake of
safety, replace the nuts and bolts in pairs if the thread of either one has been
damaged, since the other one may be damaged as well.
6. Check the contact face (spherical face) and mounting holes of wheel rim, and if
any deformation or damage is found, replace it. If the spherical face of tire nut also
has damage, replace the nut.
7. Check the wheel rim and replace it if any crack is found.
8. Separate the valve cores of inside and outside tires for easy inflation during
installation of twin tires.
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