113
Fault symptom
Possible cause
Eliminating method
6) Fatigue of the front leaf spring, looseness
of the "U" -bolt or damage of the central
bolt
6) Replace the faulted parts
Failure of
steering wheel
return to center
1. The steering system
1) Difficulty in the gear engagement
2) Malfunction of power steering system
3) Improper contact with the power piston
4) Fatigue of the return spring
5) Malfunction of slide valve
2. The front axle
1)
Excessive caster angle of the king pin
1
)
Adjust the gear engagement
2
)
Overhaul and eliminate trouble
3
)
Adjust or replace the power piston
4
)
Replace the spring
5
)
Check diameter of the slide valve
and the housing and replace them if
necessary
1) Check and adjust the front wheel
alignment
Disalignment of
the steering
wheel
1. The alignment of front wheel incorrect
2. There has fatigue and damage in the front
plate spring
3. Bending of the front axle
4. Unsmooth of the braking
5. Looseness of the front hub bearing nut
6. Inequality of the tire pressure
7. Tires with different dimension applied
1. Check and adjust the front wheel
alignment
2. Replace the faulted spring
3. Adjust or replace the front axle
4. Please refer to the chapter
"braking"
5. Tighten to specified torque
6. Inflate to the given pressure
7. Replace the tire by the correct type
Misproportion
or untimely tire
wear
1. The front axle
1) Incorrectness of the wheel alignment
2) Abrasion or wreckage of the hub bearing
and looseness of the bearing nut
3) Over looseness or tightness of the ball
stud, the king pin and the bushing
2. Tire
1) Tire pressure incorrect
2) Disalignment between the tire and the
wheel
1
)
Check and adjust the front wheel
alignment
2
)
Replace the bearing or tighten nut to
specified torque.
3
)
Make an adjustment and replace the
faulted parts as needed
1
)
Supply to the given air pressure
2
)
Replace the tire or the wheel