2012 SSANGYONG NEW ACTYON SPORTS steering

12-134610-01
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. -
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12-14
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 righ or left until it
stops with the engine idling ans 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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12-154610-01
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.

12-16
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
Steering pump Steering return pipe Steering cylinder
Return line
High pressure line
Return hose & tube
Steering pump &
reservoir
High pressure hose
Linkage gear box Steering wheel
Lower shaft Column & shaft

12-174610-01
Oil Flows during Right Turn ▶
Steering pumpTo piston pipe
in
From piston pipePiston pipe
Piston
Oil reservoir

13-74170-09
2) Typical Inspection
Tread
Inspect the tread condition on the tire
surface and various damages resulting
from the foreign materials, crack, stone or
nail etc. If there is any damage in the tire,
repair or replace it. 1.
Wear limit 2.
Measure the depth of the tire tread. If
the depth of the tread is below the
specified value, replace the tire -
You can see the protruded part in the
groove at the point with mark "▲", which
is the indicator of the tread wear limit.
The limit of the tread wear for all season
tires are 1.6 mm, which is the same as
the general tires, but the wear limit mark
is indicated as '↓'. -
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Wear limit 1.6 mm
Higher than recommended pressure can cause hard ride, tire bruising or damage and rapid
tread wear at the center of the tire.
Excessive tire wear over the limit of the tread wear (1.6 mm) can cause lower sliding friction
due to longer braking distance, easy tire burst by foreign materials, tire hydroplaning, and
tough brake and steering wheel handling. -
-

13-16
When the vehicle is driven on a road surface covered with water at high speed, tires do not
contact with the road surface but rotate floating on a thin film of water.
It causes brake failure, lower traction force and losing the steering performance.
To prevent this, increase the tire inflation pressure, use tires with leaf shape tread which is not
worn. However, it is a best measure to drive slowly. Hydro Planing ▶

02-58810-01
3. GENERAL WARNINGS
Do not diagnose the circuit with a circuit tester or attempt to modify any air bag components
including the steering wheel, air bag mounting area and harness.
Incorrect inspection could cause a problem with an air bag and seat belt pretensioner, and
they cannot protect occupants properly. Inspection and repair service should be done only by
a qualified technician.
An infant or a child should not be seated on the front seat alone or on an adult's lap. An infant
or a child could be severely injured by air bag deployed.
A child restraint system should be placed on the rear seat which has the 3-point type seat belt.
Never install a child restraint system on the front seat. Impact by the air bag inflation might
cause severe injury or even death.
When an occupant fastens the seat belt with unstable or inclined posture, the air bag cannot
protect the occupant properly. Moreover, the occupant may be injured by the air bag.
Do not incline toward the steering wheel while driving. If you hit the air bag before it is fully
inflated, brain or neck injury, or even death can occur.
Be careful not to strike the steering wheel, air bag mounting area, any air bag related
component (including wiring) and seat belt pretensioner. You might get severely injured by
sudden deployment of the air bag.
The air bag contains explosive materials, so handle it carefully when disposing or replacing it.
The air bag components will be very hot immediately after deployment. Do not touch them until
they cool down.
Once the air bag/seat belt pretentioner is triggered, it will not deploy again even if an additional
impact is applied to it. Once triggered air bag/seat belt pretensioner related components
cannot be reused, so they should be removed from the vehicle and the whole system should
be replaced with a new one.
Do not place any object or sticker on the air bag mounting area for correct and safe activation
of the air bag.
Do not bang the door. Otherwise, an air bag might operate erroneously.
Hold the outer rim of the steering so that the air bag can inflate without any hindrance.
Do not incline toward the steering wheel or hold the steering wheel with your hands crossed. It
will cause a problem with the air bag activation or severe injury when the air bag inflates.
Never put your hands or feet on the dash board. You can severely injured when the air bag
inflates.
It is normal that a loud noise, dust and smoke occur when the air bag and seat belt
pretensioner operate.
The gas come out of air bag/seat belt pretensioner activation is non-toxic nitrogen gas.
However, if this gas occurs irritation to your skin, eyes, nose, and so on, wash it out with clean
water. Seek medical help if symptoms develop. -
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