Mitsubishi Montero (2004+). Manual - part 1155

POWER STEERING DIAGNOSIS

TSB Revision

POWER STEERING

37A-9

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

POWER STEERING DIAGNOSIS

TSB Revision

POWER STEERING

37A-10

INSPECTION PROCEDURE 9: Vibration

NOTE: A slight vibration may be felt when the sta-
tionary steering effort is made due to the condition of 
the road surface. To check whether the vibration 
actually exists or not, test-drive the vehicle on a dry 
concrete or asphalt surface. A very slight amount of 
vibration is not a malfunction.

.

DIAGNOSIS

STEP 1. Check for entry of air.

Q: Is the power steering fluid foamy?

YES : 

Bleed the air. Refer to 

P.37A-18

. Then 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 vibration is generated.

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 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 clamp 
installation.

Q: Are they installed correctly?

YES : 

There is no action to be taken.

NO : 

Repair or replace the part. 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?

YES : 

Repair or replace it. Then go to Step 2.

NO : 

There is no action to be taken.

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.

POWER STEERING DIAGNOSIS

TSB Revision

POWER STEERING

37A-11

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 3.

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 : 

Check that no oil is leaking.

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

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 : 

Check that no oil is leaking.

STEP 3. Retest the system.

Check that no oil is leaking.

Q: Is there oil leakage?

YES : 

Repeat t from Step 1.

NO : 

The procedure is complete.

INSPECTION PROCEDURE 14: Oil Leakage from Gear Box

.

DIAGNOSIS

STEP 1. Check the gear box housing for damage.

Q: Is there damage?

YES : 

Replace the part. Then go to Step 3.

NO : 

Go to Step 2.

STEP 2. Check the oil-ring or oil seal for damage.

Q: Is there damage?

YES : 

Replace the part. Then go to Step 3.

NO : 

Check that no oil is leaking.

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.

SPECIAL TOOLS

TSB Revision

POWER STEERING

37A-12

SPECIAL TOOLS

M1372000600257

TOOL

TOOL NUMBER 
AND NAME

SUPERSESSION APPLICATION

MB991897
Ball joint remover

MB991113-01, 
MB990635-01 or 
General service 
tool

Tie rod end disconnection
NOTE: Steering linkage puller 
(MB990635 or MB991113) is also 
available to disconnect ball joint.

MB990326
Preload socket

General service 
tool

Tie rod end ball joint breakaway 
torque check

MB991548
Power steering oil 
pressure gauge 
adapter (Pump 
side)

MB991548-01

Oil pump pressure test

MB991549
Power steering oil 
pressure gauge 
adapter (Hose 
side)

MB991549-01

MB990662
Oil pressure gauge 
assembly

MB990662-01

MB990784
Ornament remover

General service 
tool

Removal of cover

 MB991006
Preload socket

MB991006-01

Gear box total pinion torque check

AC106827

MB990326

MB991548

MB991549

MB990662

MB990784

MB991006