9-7
Trouble symptom
Trouble symptom
1. Steering wheel drags.
2. Steering wheel fails to return
smoothly.
3. Steering wheel turns unstea-
dily.
Steering system makes abn-
ormal sound or vibration.
4. Abnormal sound heard
when steering wheel
is turned fully
5. Piping makes abnormal
sounds.
6. Valve or valve unit makes
abnormal sounds.
7. Insufficient or variable oil
flow.
8. Insufficient or variable dis-
charge pressure.
·
Bearing faulty.
·
Reaction plunger faulty.
·
Ball-and-screw assy faulty.
·
Gears poorly meshing.
·
Locknut loosening.
·
Metal spring deteriorated.
·
Gear backlash out of adjustment.
·
Air in oil circuit.
Valve
·
Faulty. (Valve fails to open.)
Piping
·
Pipe (from pump to power steering
cylinder) dented or clogged.
Oil pump
·
Lack of oil.
·
Oil inlet pipe sucks air.
·
Insufficient air bleeding.
Oil pump
·
Oil inlet pipe sucks air.
Valve
·
Faulty. (Unbalance oil pressure)
Piping
·
Pipe (from pump to power steering)
dented or clogged.
·
Insufficient air bleeding.
·
Flow control valve orifice clogged.
Piping
·
Pipe (from tank to pipe) dented or
clogged.
·
Retighten.
·
Replace.
·
Adjust.
·
Bleed air.
·
Adjust valve set pressure and check
for specified oil pressure.
·
Repair or replace.
·
Add oil.
·
Repair.
·
Bleed air completely.
·
Repair or replace.
·
Adjust valve set pressure and check
specified oil pressure.
·
Repair or replace.
·
Bleed air completely.
·
Clean.
·
Repair or replace.
·
Clean or replace.
·
Replace.
·
Clean or replace.
·
Check and correct meshing.
·
Low oil pressure.
·
Bearing faulty.
·
Spring spool faulty.
·
Reaction plunger faulty.
·
Ball-and-screw assembly faulty.
·
Sector shaft adjusting screw excessi-
vely tight.
·
Gears poorly meshing.
·
Flow divider coil spring fatigued.
·
Check locknut. Repair.
·
Clean or replace.
·
Clean or replace.
·
Replace.
·
Clean or replace.
·
Adjust.
·
Check and correct meshing.
·
Replace.
Probable cause
Probable cause
Remedy
Remedy
4. STEERING SYSTEM
4. STEERING SYSTEM
