Hyundai 20L-7 User Manual

5-13
Problem
Abnormal sound heard when
steering wheel is turned fully
Valve
· Faulty. (Valve fails to open.)
Piping
· Pipe(from pump to power steering
cylinder) dented or clogged.
· Adjust valve set pressure and check
for specified oil pressure.
· Repair or replace.
Cause Remedy
Piping makes abnormal
sounds.
Oil pump
· Lack of oil.
· Oil inlet pipe sucks air.
· Insufficient air bleeding.
· Add oil.
· Repair.
· Bleed air completely.
Valve or valve unit makes
abnormal sounds.
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.
· Repair or replace.
· Adjust valve set pressure and check
specified oil pressure.
· Repair or replace.
· Bleed air completely.
Insufficient or variable oil flow.
· Flow control valve orifice clogged. · Clean
Insufficient or variable dischar-
ge pressure.
Piping
· Pipe(from tank to pipe) dented or
clogged.
· Repair or replace.
Steering cylinder head
leakage (Piston rod)
· Packing foreign material.
· Piston rod damage.
· Rod seal damage and distortion.
· Chrome gilding damage.
· Replace
· Grind surface with oil stone.
· Replace
· Grind
Steering cylinder head thread
(A little bit leak is no problem)
· O-ring damage. · Replace
Welding leakage
· Cylinder tube damage. · Tube replace.
Rod
· Tube inside damage.
· Piston seal damage and distortion
· Grind surface with oil store.
· Replace
Piston rod bushing inner
diameter excessive gap
· Bushing wear. · Replace
Steering wheel turns unstea-
dily.
· Lockout loosening.
· Metal spring deteriorated.
· Retighten.
· Replace.
Steering system makes abn-
ormal sound or vibration.
· Gear backlash out of adjustment.
· Lockout loosening.
· Air in oil circuit.
· Adjust.
· Retighten.
· Bleed air.

Hyundai 20L-7 Specifications

General

Model	20L-7
Load Capacity	2000 kg
Rated Load	2000 kg
Load Center Distance	500 mm
Transmission	Automatic
Tire Type	Pneumatic
Overall Width	1150 mm
Lift Speed (laden / unladen)	0.5 / 0.6 m/s