Trouble symptom and probable cause
Checking and remedy
2. Shake of steering wheel, instable steering
a. Loosen steering linkage mechanism
b. Unbalance front wheel
c. Pendulate too much
d. Damaged grinding wheel
e. Heavy wear or too big clearance of steering linkage
mechanism
a. Tighten properly
b. Balance the wheel
c. Adjust
d. Replace
e. Replace parts
1. Hard to steer and steering wheel with bad return
a. Distorted main shaft, sliding shaft or column
b. Loosen universal joint or column cover
c. Improper rotation of steering wheel bearing
d. Insufficient lubrication of steering linkage mechanism
e. Low pressure tire
a. Replace parts
b. Replace universal joint
c. Replace parts
d. Fill up lubrication
e. Inflate properly
Steering mechanism trouble shooting
68
HFC1020
series trucks
Trouble symptom and probable cause
Checking and remedy
5. Heavy steering
a. Bad steering gear
b. Bad steering gear
c. Improper preload sector gear bearing
a. Replace piston set
b. Check pump for output pressure, replace if necessary
c. Adjust the pretightening force of bearing
3. Wander front wheel
a. One of the front brake or damper is disabled
b. One of the front tire low pressure
c. Disalign or break of the front leaf spring
d. Damaged grinding wheel
e. Improper toe in of front wheel
a. Adjust the brake clearance or replace damper
b. Inflate tires
c. Check front spring assembly
d. Adjust or replace
e. Readjust
4. Power steering bump leaking
a. Damaged oil seal or O ring
b. Damaged oil seal locking nuts or oil-drain plug
a. Replace
b. Repair
69