2013 SSANGYONG NEW ACTYON SPORTS wheel

12-194610-01
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. -
-

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. -
-

12-214610-01
1. SYSTEM DESCRIPTION
The power steering has been designed to make the wheel move more easily than in a manual steering
system. The hydraulic power assists the process utilizing hydraulic fluid. The fluid increases pressure in
the power steering pump and aids the movement of the steering mechanism. The power steering
system consists of pump, oil reservoir, rack and gear box. The power steering pump is a vane type and
delivers hydraulic pressure to operate the power steering system. The pressure relief valve in the pump
controls the discharging pressure. The rotary valve in the rack and the pinion gear directs the oil from the
power steering pump to one side of the rack piston. The integrated rack piston converts the hydraulic
pressure to linear movement. The operating force of the rack moves the wheels through the tie rod, the
tie rod end and the steering knuckle. Even though the hydraulic pressure cannot be generated, a driver
can steer the vehicle without power assist but it needs very high steering force. In this case, the
operating force of the steering wheel is conveyed to the pinion, and the movement of the pinion moves
the rack through the pinion gear combined to the rack gear.

12-22
2. SYSTEM LAYOUT
The steering pump is driven by the engine power through a belt. This pump circulates the power steering
oil from the reservoir -> steering pump -> oil supply pipe -> steering gear box -> oil return pipe ->
reservoir to perform steering operations
Return hose & tube
Steering pump &
reservoir
High pressure hose
Linkage gear box Steering wheel
Lower shaft Column & shaft
Return hose & tube
Steering pump &
reservoir
High pressure hose
Linkage gear box Steering wheel
Lower shaft Column & shaft
HPS model
SSPS model

13-94620-01
▶Components
PCV (Pressure Control Valve)
This valve controls the hydraulic pressure supplied to reaction device by moving the spool valve
according to the changes of solenoid valve.
Reaction device
This device increases the steerability effect by binding the input shaft with supplied hydraulic pressure
from PCV.
Solenoid valve
This valve determines the valve spool position in PCV with the electric current supplied from ECPS
control unit. 1.
2.
3.
3) Operation of Solenoid Valve
SSPS control unit controls the current to solenoid valve according to the vehicle speed. Based on this
current, the solenoid valve changes the position of valve spool to control the hydraulic pressure to the
reaction plunger. Accordingly, the SSPS system can get the desired steering force according to the
vehicle speed.
▶During parking and low speed driving
SSPS control unit outputs nearly maximum electrical current.
The solenoid rod pushes PCV spool to right side.
The hydraulic pressure coming from pump is not supplied to the reaction device as the spool
orifice is cut off.
The hydraulic pressure is cut off and the manipulation of steering wheel becomes lighter. 1.
2.
3.
4.

14-34170-09
1. SPECIFICATIONS
2. MAJOR CHANGES
Wheel assembly
16-inches silver 18-inches silver 18-inches hyper silver
PN: 41730-32000 PN: 41730-32200 PN: 41730-32300
- Added 18-inches hyper silver to wheel assembly
- Wheel offset and tire size are identical with existing specifications
Existing specifications New specifications
Description Specification
Tire 16 inch 225/75R 16
18 inch 255/60R 18
Tire inflation pressure Front: 32 psi
Rear: 32 psi (44 psi: when the vehicle is fully laden
with luggage)
Wheel 16 inch 6.5J x 16
18 inch 7.5J x 18
Balance weight 16 inch Inner: Attachment type
Outer: Clip type
18 inch Inner: Attachment type
Outer: Attachment type
Tightening torquse of wheel bolt 127.4 ~ 156.8 Nm

14-4
3. TROUBLE DIAGNOSIS
Problem Possible Cause Action
Uneven tire wear Incorrect tire pressure Adjust
Unbalanced wheel Adjust
Improper location change of tire Change tire location in
specified interval
Incorrect toe adjustmen Adjust
Incorrect wheel bearing preload adjustment Adjust
Malfunction of brake syste Adjust
Tire squeal, vibration Too low tire pressure Adjust
Unbalanced wheel or tire Adjust
Heavy vibration of wheel or tire Uneven tire wear
Uneven tire wear Check and adjust
Premature tire wear Too high tire pressure Adjust
Fast driving with low pressure tire Adjust
Overload Adjust

14-6
Symptom Possible Cause
Blade type wear from outer side
toward inner side of the tread
Excessive toe-in,
Deflection of knuckle arm,
Difference in tie rod length
between left and right sides
Blade type wear from inner side
toward outer side of the tread
Excessive toe-in,
Deflection of knuckle arm,
Difference in tie rod length
between left and right sides
Corrugation wear of tread
Poor wheel balance,
Loose wheel bearing,
poor wheel alignment
InsideOutside
Inside
Outside
Inside
Outside