Page 2836 of 3870
Q: Is there vibration?
YES: Repeat from Step 1 .
NO: The procedure is complete.
INSPECTION PROCEDURE 10: OIL LEAKAGE FROM HOSE CONNECTION DIAGNOSIS
STEP 1. Check for loosening of the pressure and return tube flare nut.
Q: Is the flare nut loose?
YES: Tighten it to 15 - 3 N.m (11 - 2 ft-lb). Then go to Step 3 .
NO: Go to Step 2.
STEP 2. Check the hose connection and the clamp installation.
Refer to POWER STEERING HOSES
.
Q: Are they correct?
YES: Go to Step 3.
NO: Correct hose connection and/or clamp installation. Then go to Step 3.
STEP 3. Retest the system.
Check that no oil is leaking.
Q: Is there oil leakage?
YES: Repeat from Step 1 .
NO: The procedure is complete.
INSPECTION PROCEDURE 11: OIL LEAKAGE FROM HOSE ASSEMBLY DIAGNOSIS
STEP 1. Check the hose for damage or clogging.
Q: Is the hose damaged or clogged?
2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor
Page 2837 of 3870
YES: Repair or replace it. Then go to Step 2.
NO: Go to Step 2.
STEP 2. Retest the system.
Check that no oil is leaking.
Q: Is there oil leakage?
YES: Repeat from Step 1 .
NO: The procedure is complete.
INSPECTION PROCEDURE 12: OIL LEAKAGE FROM OIL RESERVOIR DIAGNOSIS
STEP 1. Check the oil reservoir for damage.
Q: Is there damage?
YES: Repair or replace it. Then go to Step 2.
NO: Go to Step 2.
STEP 2. Check for overflowing.
Q: Is there oil overflowing from the reservoir?
YES: Adjust fluid level. Then go to Step 3.
NO: Go to Step 3.
STEP 3. Retest the system.
Q: Is there oil leakage?
YES: Repeat from Step 1 .
NO: The procedure is complete.
INSPECTION PROCEDURE 13: OIL LEAKAGE FROM OIL PUMP DIAGNOSIS
2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor
Page 2838 of 3870
STEP 1. Check the oil pump body for damage.
Q: Is there damage?
YES: Replace the part. Then go to Step 3 .
NO: Go to Step 2.
STEP 2. Check the O-ring or oil seal for damage.
Q: Is there damage?
YES: Replace the part. Then go to Step 3.
NO: Go to Step 3.
STEP 3. Retest the system.
Check that no oil is leaking.
Q: Is there oil is leakage?
YES: Repeat from Step 1 .
NO: The procedure is complete.
INSPECTION PROCEDURE 14: OIL LEAKAGE FROM STEERING GEAR DIAGNOSIS
STEP 1. Check the steering gear housing for damage.
Q: Is there damage?
YES: Replace the part. Then go to Step 2.
NO: Go to Step 2.
STEP 2. Retest the system.
Check that no oil is leaking.
Q: Is there oil leakage?
YES: Re
peat from Ste
p 1 .
2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor
Page 2852 of 3870
2. At a vehicle speed of approximately 35 km/h (22 mph), turn the steering wheel
90 degrees, hold a few seconds, then release. If the steering wheel then returns
70 degrees or more, the return can be judged as satisfactory.
NOTE: There will be a momentary feeling or "heaviness" when
the wheel is turned quickly, but this is not abnormal.
(Oil pump discharge amount is especially apt to be
insufficient during idling.)
2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor
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 2855 of 3870
1. Raise and support the front wheels.
2. Disconnect the return hose connection, and then connect a vinyl hose to the
return hose, and drain the fluid into a container.
Fig. 23: Disconnecting Return Hose Connection
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. Disconnect the ignition coil connectors (Refer to IGNITION COIL
).
4. While operating the starter motor intermittently, turn the steering wheel all the
way to the left and right several times to drain all of the fluid.
5. Connect the return hose securely, and then secure with the clip.
6. Fill the oil reservoir with GENUINE MITSUBISHI POWER STEERING
FLUID up to the lower mark of the reservoir, and then bleed the air.
POWER STEERING SYSTEM AIR BLEEDIN
G
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2004 STEERING Power Steering - Endeavor
Page 2856 of 3870

Perform air bleeding procedure as necessary after replacing the steering gear, oil
pump or the steering fluid lines.
1. Raise and support the front wheels.
2. Disconnect the ignition coil connectors (Refer to IGNITION COIL
).
3. Turn the steering wheel all the way to the left and right five or six times while
using the starter motor to crank the engine intermittently several times (for 15
to 20 seconds).
4. Connect the ignition coil connectors (Refer to IGNITION COIL
).
5. Start the engine and allow to idle.
6. Turn the steering wheel to the left and right until there are no air bubbles in the
oil reservoir.
7. Confirm that the fluid is not milky, and that the level is between the high and
low dipstick marks.
8. Confirm that there is very little change in the fluid level when the steering
wheel is turned left and right.
9. Confirm that the change in the fluid level is no more than 5 mm (0.2 inch)
when the en
gine is sto
pped.
CAUTION: Perform air bleeding only while cranking the
engine. Do not perform air bleeding while the
en
gine is runnin
g. If
you do so, air in the fluid will
be increased and air bleeding will become more
difficult. During air bleeding, refill the steering
fluid so that the level never falls below the lower
mark on the dipstick.
CAUTION: If the fluid level rises suddenly after the engine is
stopped, the air has not been completely bled. If
air bleeding is not complete, there will be
abnormal noises from the pump and the flow-
control valve, and this condition could reduce
the life of the power steering components.
2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor