Hyundai 35DS-7 Operation Manual page 118

Problem
Steering wheel turns unstea-
dily.
Steering system makes abn-
ormal sound or vibration.
Abnormal sound heard when
steering wheel is turned fully
Piping makes abnormal
sounds.
Valve or valve unit makes
abnormal sounds.
Insufficient or variable oil flow.
Insufficient or variable dischar-
ge pressure.
Steering cylinder head
leakage (Piston rod)
Steering cylinder head thread
(A little bit leak is no problem)
Welding leakage
Rod
Piston rod bushing inner
diameter excessive gap
c c ause
Lockout loosening.
Metal spring deteriorated.
Gear backlash out of adjustment.
Lockout loosening.
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.
Packing foreign materal.
Piston rod damage.
Rod seal damage and distortion.
Chrome gilding damage.
O-ring damage.
Cylinder tube damage.
Tube inside damage.
Piston seal damage and distortion
Bushing wear.
5-11
Remedy
Retighten.
Replace.
Adjust.
Retighten.
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.
Replace
Grind surface with oil stone.
Replace
Grind
Replace
Tube replace.
Grind surface with oil store.
Replace
Replace