Control Valve; Power Cylinder; Rear Oil Pump - Mitsubishi 3000GT 1991 Service Manual

TROUBLESHOOTING
Before inspecting, check the following items:
Ensure that the suspension has not been mod-
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ified
Tire and wheel size, specifications, air pressure,
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balance and amount of wear
Steering wheel type
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Wheel alignment
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Malfunction symptom
4WS does not operate
Poor steering feeling
Feeling of friction in steering
Poor steering return
Steering wheel efforts
excessive
Rear wheels cannot be
steered
Poor rear wheels return
Hydraulic pressure for rear
wheel is constantly high
Long rear wheel steering
delay
Poor steering response
Poor steering return
Poor rear wheel steering
response
Poor rear wheel steering
range
Poor steerability (extreme
tire wear)
Malfunctioning system

Power cylinder

Rear oil pump

Control valve

Steering gears and linkage
Control valve
Power cylinder
Oil line
Oil reservoir
Control valve
Power cylinder
Rear oil pump
Power cylinder
Control valve
Power cylinder
Rear oil pump
Power cylinder
Oil pump drive belt tension
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@ Power steering fluid level, and air in the system
Engine Idle soeed and even idle
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Oil leakage
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Inspection item
Tie rod swing torque
Power cylinder slide resistance
Flow volume check
Rack cracks or deformation
Oil leakage from control valve jornt
Oil leakage from piston rod
Pressure hose breakage
Oil reservoir deformation or oil leakage
Stuck control valve spool
Stuck power cylinder
Relief valve remains open
Excessive power cylinder friction
Looseness in power cylinder tie rod ball jo.int
Ball joint dust cover cracks
Oil leakage from control valve spool
Oil leakage from power cylinder
Extreme oil pump internal wear
adjustment