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1.Disconnect the pressure
hose from the oil pump, and then connect the following
special
tools.
- MB990662: Power Steering Oil Pressure Gauge
- MB991548: Power Steering Oil Pressure Gauge Adapter
(pump side)
- MB991549: Power Steering Oil Pressure Gauge Adapter
(hose side)
2.Bleed air, then turn the steering wheel
several times while the vehicle is not moving
so that the temperature of the fluid rises to approximately
50 -
60°C. 3.Start the engine and idle it at 1000
±
100 r/min. 4.Fully close the shut-off valve
of the pressure gauge and measure the oil pump relief
pressure to confirm that it is within the standard value
range. Open it again immediately after
checking the pressure. Standard value: 9.8
-
10.3 MPa 5.If it is not within the
standard value, replace the oil pump. 6.Check
whether or not the hydraulic pressure is the standard value
when no-load conditions
are created by fully opening the shut-off valve of the
pressure gauge. Standard value: 0.2 -
0.7 MPa 7.If it is not within the standard
value, the probable cause is a malfunction of the
oil line or steering gear, so check these parts and repair
as necessary. 8.Turn the steering wheel all the
way to the left or right;
then check whether or not
the retention hydraulic pressure is the standard
value. Standard value: 9.8 -
10.3 MPa 9.If not the standard value,
overhaul the steering gear. Remeasure fluid
pressure. 10. Remove the special tools, and then
tighten the pressure hose to the specified
torque. Tightening torque: 57 ±
7 N·m 11. Bleed the system (Refer to
).
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