Page 2853 of 3870
Fig. 21: Checking Steering Wheel Return To Center
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
DRIVE BELT TENSION CHECK Refer to 7. DRIVE BELTS (FOR GENERATOR, POWER STEERING OIL PUMP AND AIR CONDITIONING) (CHECK)
.
FLUID LEVEL CHECK
2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor
Page 2854 of 3870
1. Park the vehicle on a flat, level surface.
2. Start the engine, and then turn the steering wheel several times to raise the
temperature of the fluid to approximately 50 - 60°C (122 - 140°F).
3. With the engine running, turn the wheel all the way to the left and right several
times.
4. Check the fluid in the oil reservoir for foaming or milkiness. Check the
difference of the fluid level when the engine is stopped, and while it is running.
If the fluid contains air or has milky appearance, or the fluid level fluctuate by
5 mm (0.2 inch) or more, power steering system air bleeding should be done.
Refer to POWER STEERING SYSTEM AIR BLEEDING
.
Fig. 22: Checking Fluid Level
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
FLUID REPLACEMENT
2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor
Page 2858 of 3870
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
(122 - 140°F).
3. Start the engine and idle it at 700 +/- 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: 9.3 - 9.8 MPa (1,349 - 1,421 psi)
CAUTION: The pressure gauge shut-off valve must not
remain closed for more than 10 seconds.
2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor
Page 2859 of 3870
Fig. 25: Checking Oil Pump Pressure
Courtes
y of MITSUBISHI MOTOR SALES OF AMERICA
.
2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor
Page 2860 of 3870

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: 0.8 - 1.0 MPa (116 - 145 psi)
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 the retention
hydraulic pressure.
Standard value: 9.3 - 9.8 MPa (1,349 - 1,421 psi)
9. If not the standard value, overhaul or replace the steering gear. Remeasure
fluid pressure.
10. Remove special tools MB991548, MB990662 and MB991549, and then tighten
the pressure tube flare nut to the specified torque.
Tightening torque: 15 +/- 3 N.m (11 +/- 2 ft-lb)
11. Bleed the system (Refer to POWER STEERING SYSTEM AIR
BLEEDING
).
POWER STEERING PRESSURE SWITCH CHECK Required 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)
1. Disconnect the pressure hose from the oil pump, and then connect the special
tools MB991548, MB990662 and MB991549.
2. Bleed air, and then turn the steering wheel several times while the vehicle is
not movin
g so that the tem
perature of the fluid rises to a
pproximatel
y 50 - 60°
2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor
Page 2861 of 3870
C (122 - 140°F).
3. The engine should be idling.
4. Disconnect the connector for the oil pressure switch, and place an ohmmeter at
the switch.
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: 18 - 2.4 MPa (261 - 348 psi)
6. Gradually open the shut-off valve and reduce the hydraulic pressure; then
check whether or not the hydraulic pressure that deactivates the switch is the
standard value.
Standard value: 0.8 - 2.4 MPa (116 - 348 psi)
7. Remove the special tools MB991548, MB990662 and MB991549, and then
tighten the pressure tube flare nut to the specified torque.
Tightening torque: 15 +/- 3 N.m (11 +/- 2 ft-lb)
8. Bleed the system. (Refer to POWER STEERING SYSTEM AIR BLEEDING
).
2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor
Page 2929 of 3870
STEP 2. Check the drive shaft for bending.
Q: Is the drive shaft bent?
YES: Replace the drive shaft assembly. Then go to Step 3.
NO: Go to Step 4 .
STEP 3. Check the drive shaft assembly for wear or damage.
Q: Is the drive shaft assembly worn or damaged?
YES: Replace the drive shaft assembly. Then go to Step 4.
NO: There is no action to be taken.
STEP 4. Retest the system.
Q: Is the abnormal noise eliminated?
YES: The procedure is complete.
NO: Start over at Step 1.
INSPECTION PROCEDURE 2: CONSTANT NOISE {{DIFFERENTIAL}} DIAGNOSIS
STEP 1. Check the oil level.
Remove the filler
plug and check the
gear oil level.
2004 Mitsubishi Endeavor LS
2004 SUSPENSION Rear Axle < AWD > - Endeavor
Page 2930 of 3870
Fig. 4: Checking Gear Oil Level
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Is the gear oil level more than 8 mm (0.3 inch) below the bottom of the
filler plug hole?
YES: Check the oil leakage from differential carrier, and repair if
necessary. Then, refill Hypoid gear oil API classification GL-5 or higher;
Above-23°C (-10°F): SAE 90, 85W-90, 80W-90, From-34 to-23°C (-30
to-10°F
): SAE 80W
, 80W-90
, Below-34°C
(-30°F
): SAE 75W. Then
go to
2004 Mitsubishi Endeavor LS
2004 SUSPENSION Rear Axle < AWD > - Endeavor