Mitsubishi Montero Sport (2004+). Manual — part 821
POWER STEERING DIAGNOSIS
TSB Revision
STEERING
37A-7
STEP 7. Check the wheel alignment (camber and caster).
Refer to GROUP 33A, On-vehicle Service
− Front Wheel Align-
ment Check and Adjustment
.
Q: Is the alignment incorrect?
YES : Adjust it. Then go to Step 10.
NO : Go to Step 8.
STEP 8. Check the gear box rack piston seal for damage.
Q: Is there damage?
YES : Replace it. Then go to Step 10.
NO : Go to Step 9.
STEP 9. Check for excessive tie rod end ball joint
breakaway torque.
Refer to
Q: Is there fault?
YES : Replace the part. Then go to Step 10.
NO : There is no action to be taken.
STEP 10. Check steering wheel operation.
Verify that steering wheel operation is not difficult.
Q: Is the steering wheel operation difficult?
YES : Repeat from Step 1.
NO : The procedure is complete.
INSPECTION PROCEDURE 3: Rattling Noise
.
DIAGNOSIS
STEP 1. Check for proper oil pump and gear box
installation.
Q: Is the oil pump and gear box installation correct?
YES :
Go to Step 2.
NO :
Repair it. Then go to Step 4.
STEP 2. Check for interference of other parts with
the steering column and power steering hoses.
Q: Is there interference?
YES :
Correct the interference. Then go to Step 4.
NO :
Go to Step 3.
STEP 3. Check for noise from inside the oil pump
or gear box.
Q: Is there noise?
YES :
Replace the part. Then go to Step 4.
NO :
There is no action to be taken.
STEP 4. Check for rattling noise.
Confirm that no noise is generated.
Q: Is there noise?
YES :
Repeat from Step 1.
NO :
The procedure is complete.
POWER STEERING DIAGNOSIS
TSB Revision
STEERING
37A-8
INSPECTION PROCEDURE 4 : Shrill Noise
.
DIAGNOSIS
STEP 1. Check for entry of air.
Q: Is the power steering fluid foamy?
YES :
Bleed the air. Refer to
. Then go to
Step 3.
NO :
Go to Step 2.
STEP 2. Check for seizure in the oil pump.
Q: Is there seizure?
YES :
Replace the part. Then go to Step 3.
NO :
There is no action to be taken.
STEP 3. Retest the system.
Confirm that no noise is generated.
Q: Is there noise?
YES :
Repeat from Step 1.
NO :
The procedure is complete.
INSPECTION PROCEDURE 5 : Squealing Noise
.
DIAGNOSIS
STEP 1. Check the belt tension.
(1) Refer to GROUP 00, Maintenance Service
−
Q: Is the belt tension incorrect?
YES :
Adjust the belt tension. Then go to Step 3.
NO :
Go to Step 2.
STEP 2. Check for seizure in the oil pump.
Q: Is there seizure?
YES :
Replace the part. Then go to Step 3.
NO :
There is no action to be taken.
STEP 3. Retest the system.
Confirm that no noise is generated.
Q: Is there noise?
YES :
Repeat from Step 1.
NO :
The procedure is complete.
INSPECTION PROCEDURE 6 : Hissing Noise
.
DIAGNOSIS
STEP 1. Check for entry of air.
Q: Is the power steering fluid foamy?
YES :
Bleed the air. Refer to
. Then go to
Step 4.
NO :
Go to Step 2.
STEP 2. Check each hose for crushing or
twisting.
Q: Is any hose crushed or twisted?
YES :
Repair or replace the hose. Then go to Step
NO :
Go to Step 3.
STEP 3. Check the steering box for damage.
Q: Is there damage?
YES :
Repair or replace the part. Then go to Step
NO :
There is no action to be taken.
STEP 4. Retest the system.
Confirm that no noise is generated.
Q: Is there noise?
YES :
Repeat from Step 1.
NO :
The procedure is complete.
POWER STEERING DIAGNOSIS
TSB Revision
STEERING
37A-9
INSPECTION PROCEDURE 7 : Droning Noise
.
DIAGNOSIS
STEP 1. Check the oil pump or oil pump bracket
installation.
Q: Is the oil pump or oil pump bracket installation
correct?
YES :
Go to Step 2.
NO :
Repair it. Then go to Step 3.
STEP 2. Check the oil pump for damage.
NOTE: If a slight "beat noise" is produced by the oil
pump when the steering wheel is turned fully and
held in that position, this is not a malfunction.
Q: Is there damage?
YES :
Replace the oil pump. Then go to Step 3.
NO :
There is no action to be taken.
STEP 3. Retest the system.
Confirm that no noise is generated.
Q: Is there noise?
YES :
Repeat from Step 1.
NO :
The procedure is complete.
POWER STEERING DIAGNOSIS
TSB Revision
STEERING
37A-10
INSPECTION PROCEDURE 8: Squeaking Noise
.
DIAGNOSIS
STEP 1. Check for interference of the wheel and vehicle
body.
If interfering, adjust the steering angle.
(1) Place the front wheel on a turning radius gauge and
measure the steering angle.
Standard value:
CAUTION
When the steering wheel is turned to lock, check that the
clearance between the knuckle and the stopper is 1 mm
(0.04 inch) or more.
(2) Check that the toe-in is within the standard value. If the
steering angle is outside the standard value, adjust the
toe-in. (Refer to GROUP 33A, On-vehicle Service
Standard value: 3.5
± 3.5 mm (0.14 ± 0.14 inch)
(3) Adjust the steering angle with the stopper bolt.
Q: Is the steering angle normal?
YES : Go to Step 2.
NO : Adjust the steering angle, and Then go to Step 3.
STEP 2. Check the steering gear box for damage.
Q: Is there damage?
YES : Repair or replace the part. Then go to Step 3.
NO : There is no action to be taken.
STEP 3. Retest the system.
Confirm that no noise is generated.
Q: Is there noise?
YES : Repeat from Step 1.
NO : The procedure is complete.
ITEM
SPECIFICATION
Inside wheel
29
°40' − 32°40'
Outside wheel (reference)
29
°30'
AC000756
AC004561 AB
KNUCKLE
LOWER ARM
1 mm
(0.04 in) OR MORE
AC004188
STOPPER BOLT
IDLER ARM
STOPPER BOLT
IDLER ARM
80 N·m
59 ft-lb
AB
80 N·m
59 ft-lb
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