2013 SSANGYONG NEW ACTYON SPORTS oil

11-24
2) DUMP (ESP is working) Mode
The pressure decreases just before the wheel speed drops and the wheels are locked.
The inlet valve closes and the outlet valve opens as in the ABS HECU and the oil is gathered at the low
pressure chamber while no additional oil is being supplied. Then the pump operates to allow fast oil
drainage. The shuttle valve and the separation valve do not operate while decompression.

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1. SPECIFICATIONS
Description Specification
Steering wheel Type 4-spoke type
Gear box
(HPS)Type Rack and pinion type
Gear ratio 40.245
Steering angle Inner36.2˚
Outer32.4˚
Oil pump
(HPS)Type Vane type
Maximum pressure (kgf/cm2)90 ± 3
Pulley size (mm)Ø115
Operating temperature-40℃~150℃
Minimum turning radius (m) 5.8
Steering oil Type S-PSF-3
Capacity (L) Approx. 1.0
Service interval Daily check and add if necessary.
Steering column shaft Tilting angle-4.0/ 0° /+4.0° / +8.0°
This section describes the power steering pump and gear box based on the HPS (Hydraulic Power
Steering) system. For the information of the SSPS (Speed Sensing Power Steering) system, refer to
SSPS section under CHASSIS.

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4. TROUBLESHOOTING
Problem Possible Cause Action
Movements of steering
feels heavyIrregular wear or binding of steering ball joint due
to lack of lubrication or foreign material insertionLubricate or replace
Damaged or defective steering gear Replace the steering
gear assembly
Incorrect steering pinion preload Adjust
Defective steering shaft joint Replace
leakage of steering fluid Repair or replace
Insufficient steering fluid or air insertion Fill up fluid or bleed air
Defective steering oil pump Replace
Damaged or loosened pump drive belt Adjust or replace
Clogging of fluid line Repair or replace
Damaged wheel or tire Repair or replace
Defective suspension Repair or replace
Steering wheel pulls to
one sideDamaged steering linkage Replace
Damaged wheel or tire Repair or replace
Defective suspension Repair or replace
Defective brake system Repair or replace
Excessive free play of
steering wheelWorn steering gear Replace the steering
gear assembly
Worn or damaged steering ball joint Replace
Looseness of steering gear box Retighten
Poor returning of
steering wheelBroken or binding of steering ball joint Replace
Improper correct steering pinion preload Replace the steering
gear assembly
Damaged wheel or tire Repair or replace
Defective suspension Repair or replace

12-14
Problem Possible Cause Action
Excessive vibration of
steering wheel (shimming)Broken steering linkage Replace
Looseness of steering gear box Retighten
Broken or binding of steering ball joint Replace
Worn or damaged front wheel bearing Replace
Damaged wheel or tire Repair or replace
Defective suspension Repair or replace
Abnormal noise from
steering systemLooseness of steering gear box Retighten
Defective steering gear Replace the gear
assembly
Interference between steering column and
partsRepair
Looseness of steering linkage Retighten
Loosened or damaged oil pump drive belt Adjust or replace
Looseness of oil pump bracket Replace
Looseness of oil pump Replace
Air insertion into system Bleed air
Defective oil pump Replace
Abnormal noise when
turning steering wheelLooseness of steering column Retighten
Worn or damaged steering shaft bearing Replace the steering
column
Looseness of intermediate shaft Retighten
Too heavy steering wheel Worn or damaged steering shaft bearing Replace the steering
column

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Oil Change ▶
Open the power fluid reservoir cap and drain
the fluid completely with oil suction device. To
make it easy, turn the steering wheel to its
both ends several times.
Fill up the specified fluid into fluid reservoir
and bleed air from the steering system. 1.
2. Oil Level Check ▶
Place the vehicle on a level ground and start
the engine and let it run at idle speed.
Turn the steering wheel several times so that
the oil temperature reaches to normal
operating level (75~85˚C).
Place the steering wheel at straight ahead
direction.
Check the oil level in the power steering oil
reservoir. Adjust the oil level between MAX
and MIN. 1.
2.
3.
4.
If the difference between two measurements
is below 5 mm and the level is between MAX
and MIN level, it's normal. If it is over 5 mm,
bleed air from the system. Check the fluid level on a level ground with the
engine turned off. The fluid level should be
between the MIN and MAX marks on the
reservoir cap gauge.
below 5 mm
Engine idling Engine running
Oil typeS-PSF-3
Capacityapprox. 1ℓ (including
reservoir)

12-18
Air Bleeding ▶
Lift up the vehicle very carefully.
Turn the steering wheel to its both ends
several times and add the oil up to MAX line
in the steering oil reservoir.
Periodically crank the starting motor and turn
the steering wheel to its both ends without
any interruption.
Check the oil level again. If the oil level is
fluctuated, repeat the procedures from step 3
to step 5.
Start the engine.
Turn the steering wheel to its both ends until
any bubble can be found in the steering oil
reservoir.
Perform the test drive and check the steering
wheel for normal operation and noise.
If the oil level abruptly goes up, bleed the air
from the system again. 1.
2.
3.
4.
5.
6.
7.
8.
The air bleeding should be done after servicing
the power steering system and when the
difference between two measurements (cooled
and normal temperature) is prominent.
Max
Min
Normal Abnormal
If the air bleeding is not properly performed,
the life span of the power steering pump
may be shortened. -

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Oil Pump Pressure Check ▶
Unscrew the pressure line fitting in power
steering pump.
Install the pressure gauge between the
power steering pump and the power steering
oil pressure line.
Place the shift lever to neutral position. Apply
the parking brake.
Open the valve in pressure gauge. Start the
engine and let it run at idle speed.
Turn the steering wheel several times so that
the oil temperature reaches to normal
operating level. 1.
2.
3.
4.
5.
Before checking the pressure, check the oil
level and belt tension. Prepare the empty
container to collect the spilled oil during the
service. Check the oil pump pressure to locate any
defect in oil pump.
Fully close the valve in pressure gauge and
measure the oil pressure. 6.
Relief pressure
90 ± 3 bar
Oil pump
Steering gear box
To prevent internal damage, do not close
the gauge valve over 10 seconds.
Keep the oil temperature at proper range. -
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12-20
Measure the oil pressure with the gauge valve
fully open. 7.
Pressure at no load
3 to 5 bar
If the pump pressure is in specified range, the
pump is normal. If not, replace the power
steering pump 8.
Turn the steering wheel right or left until it
stops with the engine idling and valve fully
open. 9.
Oil pressure78 to 83 bar
To prevent the internal damage, do not close
the gauge valve for over 10 seconds.
Keep the oil temperature at proper range. -
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