Mitsubishi 3000GT 1991 Service Manual page 840

Adapter
Pressure gauge
Temperature
STEERING
CHECKING THE STEERING GEAR RETENTION HYDRAULIC
Shut-off valve
PRESSURE
open)
I
1.
Disconnect the pressure hose from the oil pump, and then
connect the special tools.
2. Bleed the air, and then turn the steering wheel several
times while the vehicle is not moving so that the tempera-
ture of the fluid rises to approximately 50 - 60°C (122 -
140°F).
3. Start the engine and idle it at 1,000 & 100 rpm.
4. Fully close and fully open the shut-off valve of the pressure
gauge.
5. 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: 7.5 - 8.2 MPa (1,067 - 1,166 psi)
6. When not within the standard value, overhaul the steering
-01)
gear box.
Remeasure fluid pressure.
7. Remove the special tools, and then tighten the pressure
hose to the specified torque.
8. Bleed the system.
OIL PRESSURE SWITCH CHECK
Shut-off
valve
1. Disconnect the pressure hose from the oil pump, and then
connect the special tools.
2. Bleed the air, and then turn the steering wheel several
times while the vehicle is not moving so that the tempera-
ture of the fluid rises to approximately 50 - 60°C (122 -
140°F).
3. The engine should be idling.
4. Disconnect the connector for the oil pressure switch, and
place an ohmmeter in position.
5. Gradually close the shut-off valve of the pressure gauge and
increase the hydraulic pressure then check whether or not
the hydraulic pressure that activates the switch is the
standard value.
Standard value: 1.5 - 2.0 MPa (213 - 284 psi)
6. Gradually open the shut-off valve and reduce the hydraulic
pressure; then check whether the hydraulic pressure that
-01)
deactivates the switch is the standard value.
Standard value: 0.7 - 1.2 MPa (100 - 171 psi)
7. Remove the special tools, and then tighten the pressure
hose to the specified torque.
8. Bleed the system.
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