Mitsubishi 3000GT Service Manual page 973

Pressure gauge
Temperature
(MB990662
STEERING
CHECKING THE STEERING GEAR RETENTION
Shut-off valve
HYDRAULIC PRESSURE
(Fully open)
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
3. Start the engine and idle it at 1,000 f 100 rpm.
4. 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
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
Disconnect the pressure hose from the oil pump, and
1.
then connect the special tools.
Bleed the air, and then turn the steering wheel several
2.
times while the vehicle is not moving so that the tempera-
ture of the fluid rises to approximately 50-60X
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
deactivates the switch is the standard value.
Standard value: 0.7-1.2 MPa (loo-171 psi)
7. Remove the special tools, and then tighten the pressure
hose to the specified torque.
Bleed the system.
8.
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