2012 SSANGYONG RODIUS oil pressure

09-194891-01
▶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.

10-10
▶Pressure Decreases in the Circuit when ABS is Operating
Even when the hydraulic pressure on each circuit is stable, the wheel can be locked as the wheel speed
decreases. This is when the ABS ECU detects the wheel speed and the vehicle speed and gives the
optimized braking without locking the wheels. In order to prevent from hydraulic pressure increases, the
inlet valve is closed and the outlet valve is opened. Also, the oil is sent to the low pressure changer and
the wheel speed increases again. The ABS ECU operates the pump to circulate the oil in the low
pressure chamber to the master cylinder. This may make the driver to feel the brake pedal vibration and
some noises.
▶Pressure Increases in the Circuit when ABS is Operating
<0068009a0047009b008f008c0047009e008f008c008c00930047009a0097008c008c008b004700900095008a0099008c0088009a008c009a00530047009b008f008c0047009000950093008c009b0047009d00880093009d008c004700960097008c009500
9a004700880095008b0047009b008f008c0047009e008f008c>el’s pressure increases due to
the master cylinder pressure. The oil in the low pressure chamber circulates to the wheel by the pump
and the wheel speed decreases as the hydraulic pressure at wheel increases. This operation continues
repetitively until there are no signs that the ECU is locking the wheels. When the ABS hydraulic pressure
control takes place, there may be some vibration and noises at the brake pedal.

11-34610-00
1. SPECIFICATIONS
Description Specification
Steering wheelType 4-spoke type
Outer diameter (mm) 390
Steering gear boxType Rack and pinion type
Steering angleInner36.4°
Outer31.5°
Steering oil pumpType Vane type
Maximum pressure (kgf/cm2)90±3
Pulley size (mm)Ø115
Operating temperature-40℃ ~ 150℃
Steering oilType S-PSF3
Capacity (L) approx. 1.1
Minimum turning radius (m) 6.08
Tilting angle±3°

11-4
2. TIGHTENING TORQUE
DescriptionKgf·m N·m
Steering column shaftSteering column mounting bolt 2.0 ~ 2.5 19.6 ~ 24.5
Steering wheel and steering column shaft
lock nut4.0 ~ 6.0 39.2 ~ 58.8
Steering wheel and air bag module
mounting bolt0.7 ~ 1.1 6.8 ~ 10.8
Steering column and lower shaft
connection bolt.1.8 ~ 2.5 17.6 ~ 24.5
Power steering gear
boxSteering gear box and gear box cross
member mounting bolt7.0 ~ 9.0 68.6 ~ 88.2
Steering gear box and lower shaft
connection bolt2.5 ~ 3.0 24.5 ~ 29.4
Tie rod end and knuckle connection nut 3.5 ~ 4.5 34.3 ~ 44.1
Tie rod end lock nut 6.5 ~ 8.0 63.7 ~ 78.4
Steering gear box and pressure hose
connection nut3.2 ~ 3.8 31.4 ~ 37.2
Steering gear box and return line
connection nut3.2 ~ 3.8 31.4 ~ 37.2
Power steering pumpEye bolt for oil supply pipe to power
steering pump5.5 ~ 6.5 53.9 ~ 63.7
Power steering pump mounting bolt 2.0 ~ 2.5 19.6 ~ 24.5
Power steering line Return line and clip connection bolt 1.2 ~ 1.8 11.7 ~ 17.6

11-10
Oil Pump Pressure Check ▶
Check the oil pump pressure to locate any defect
in oil pump.
Before checking the pressure, check the oil
level and belt tension. Prepare the empty
container to collect the spilled oil during the
service.
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. A.
B.
C.
D.
E.
Fully close the valve in pressure gauge and
measure the oil pressure. F.
To prevent internal damage, do not close the
gauge valve over 10 seconds.
Keep the oil temperature at proper range. -
-
Relief pressure90 ± 3 bar

11-114610-00
Measure the oil pressure with the gauge valve
fully open. G.
Pressure at no load3 ~ 5bar
If the pump pressure is in specified range, the
pump is normal. If not, replace the power
steering pump H.
Turn the steering wheel righ or left until it
stops with the engine idling ans valve fully
open. I.
Oil pressure78 ~ 83bar