Mitsubishi Montero (2002-2004). Manual — part 430

POWER STEERING DIAGNOSIS

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POWER STEERING

37A-7

STEP 8. Check for excessive tie rod end ball joint
breakaway torque.
Refer to

P.37A-16

.

Q: Is there fault?

YES : Replace the part. Then go to Step 10.
NO : Go to Step 9.

STEP 9. Check the gear box rack piston seal for damage.
Q: Is there damage?

YES : Replace it. 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.

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

P.37A-19

. 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.

POWER STEERING DIAGNOSIS

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POWER STEERING

37A-8

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 power steering belt tension.

CAUTION

Perform the check after rotating the engine in the normal
direction (one revolution or more).
NOTE: Since the auto-tensioner is used, it is not necessary to
adjust the tension of the belt.
(1) Check that the indicator mark of the auto-tensioner is

located between the marks shown as "A" on the tensioner
bracket.

(2) If the mark is located out of the space "A," replace the drive

belt.

Q: Is the indicator mark of the auto-tensioner located

between the marks shown as "A" on the tensioner
bracket?
YES : Go to Step 2.
NO : Replace the drive belt or auto-tensioner. Then go to

Step 3.

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.

ACX00751AB

INDICATOR MARK

A

POWER STEERING DIAGNOSIS

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POWER STEERING

37A-9

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

P.37A-19

. 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

4.

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

4.

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.

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

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POWER 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:

(2) If the steering angle is not within the standard value, adjust

the toe-in.

Standard value: 2.5

± 2.5 mm(0.1± 0.1 inch)

(3) Adjust the toe-in by undoing the clip and turning the left and

right tie rod turnbuckles by the same amount (in opposite
directions.)

Q: Is the steering angle normal?

YES : Go to Step 3.
NO : Go to Step 2.

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

36

°30' ± 1°30'

Outside wheel (reference) 31

°40'

AC000756

ACX00711AB

BELLOWS CLIP