Mitsubishi Montero Sport (2004+). Manual - part 820

 

  Index      Mitsubishi     Mitsubishi Montero Sport - service repair manual 2004 year

 

Search            

 

 

 

 

 

 

 

  

 

Content   ..  818  819  820  821   ..

 

 

Mitsubishi Montero Sport (2004+). Manual - part 820

 

 

GENERAL DESCRIPTION

TSB Revision

STEERING

37A-3

GENERAL DESCRIPTION

M1372000100393

The vehicle uses engine speed-responsive hydraulic 
power steering.
The steering wheel has four spokes. All vehicles are 
equipped with SRS (Supplemental Restraint Sys-
tem).

The steering column has a shock absorber mecha-
nism and a tilt steering mechanism.
A vane-type oil pump with a fluid flow control system 
has been included. The steering gear and linkage is 
ball and nut type.

CONSTRUCTION DIAGRAM

AC004163

OIL RESERVOIR

OIL PUMP

STEERING COLUMN ASSEMBLY

IDLER ARM ASSEMBLY

RELAY ROD

PITMAN ARM

STEERING GEAR BOX

TIE ROD

TILT STEERING LEVER

STEERING WHEEL

AB

POWER STEERING DIAGNOSIS

TSB Revision

STEERING

37A-4

POWER STEERING DIAGNOSIS

INTRODUCTION TO POWER STEERING DIAGNOSIS

M1372008500232

Hydraulic power steering is used for all vehicles. 
Faults in the power steering can include excessive 
play of the steering wheel, difficult steering wheel 
operation, noise, vibration, and oil leaks, etc. Possi-
ble causes of these faults can include defects in the 
gear box, oil pump or steering linkage.

POWER STEERING DIAGNOSTIC TROUBLESHOOTING STRATEGY

M1372007300235

Use these steps to plan your diagnostic strategy. If 
you follow them carefully, you will be sure that you 
have exhausted most of the possible ways to find a 
power steering fault.
1. Gather information from the customer.

2. Verify that the condition described by the 

customer exists.

3. Find the malfunction by following the Symptom 

Chart.

4. Verify that the malfunction is eliminated.

SYMPTOM CHART

M1372007600258

SYMPTOM

INSPECTION 
PROCEDURE

REFERENCE 
PAGE

Excessive play of steering wheel

1

P.37A-5

Difficult steering wheel operation (insufficient power assist)

2

P.37A-6

Rattling noise

3

P.37A-7

Shrill noise

4

P.37A-8

Squealing noise

5

P.37A-8

Hissing noise

6

P.37A-8

Droning noise

7

P.37A-9

Squeaking noise

8

P.37A-10

Vibration

9

P.37A-11

Oil leakage from hose connection

10

P.37A-11

Oil leakage from hose assembly

11

P.37A-11

Oil leakage from oil reservoir

12

P.37A-12

Oil leakage from oil pump

13

P.37A-12

Oil leakage from gear box

14

P.37A-12

POWER STEERING DIAGNOSIS

TSB Revision

STEERING

37A-5

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: Excessive Play of Steering Wheel

.

DIAGNOSIS

STEP 1. Check for looseness at the steering shaft coupling 
section and at the steering linkage.
Q: Is there any looseness?

YES : Repair or replace the part. Then go to Step 3.
NO :  Go to Step 2.

STEP 2. Check the steering gear backlash (excessive).
NOTE: Be sure to adjust with the steering wheel in the straight 
ahead position.
NOTE: If the adjusting bolt is over tightened, more steering 
effort will be required, and return of the wheel will be adversely 
affected.
(1) Jack up the vehicle front and hold the steering wheel in the 

straight ahead position.

(2) Take a parts the pitman arm and the relay rod.(Refer to 

P.37A-30

.)

(3) Measure the steering gear backlash at the pitman arm top 

end with a dial indicator.

Limit: 0.5 mm (0.02 inch)

Q: Does the play exceed the limit?

YES : Screw in the steering gear box adjusting bolt until the 

steering wheel free play is within the standard value. 
Then go to Step 3.

NO :  Go to Step 3.

STEP 3. Check steering wheel play.
Verify that the steering wheel play is not excessive.
Q: Is the steering wheel play excessive?

YES : Repeat from Step 1.
NO :  The procedure is complete.

AC004187

AC004186

POWER STEERING DIAGNOSIS

TSB Revision

STEERING

37A-6

INSPECTION PROCEDURE 2: Difficult Steering Wheel Operation (Insufficient Power Assist)

.

DIAGNOSIS

STEP 1. Check the power steering belt tension.
Refer to GROUP 00, Maintenance Service 

− Drive Belt 

P.00-46

. 

Q: Is the power steering belt tension within the standard 

value?
YES : Go to Step 2.
NO :  Adjust it. Then go to Step 10.

STEP 2. Check the belt for damage.
Q: Is the belt damaged?

YES : Replace the belt. Then go to Step 10.
NO :  Go to Step 3.

STEP 3. Check the fluid level.
(1) Park the vehicle on a flat, level surface, start the engine, 

and then turn the steering wheel several times in both 
directions to raise the temperature of the fluid to 
approximately 50 

− 60°C (122 − 140°F).

(2) With the engine running, turn the wheel all the way to the 

left and right several times.

(3) 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 change of the fluid 
level is 5 mm (0.2 inch) or more, bleed air from the system. 
(Refer to 

P.37A-20

.)

Q: Is fluid foamy?

YES : Go to Step 4.
NO :  Go to Step 10.

STEP 4. Check for entry of air.
Q: Has air entered?

YES : Bleed the air. Refer to 

P.37A-20

. Then go to Step 10.

NO :  Go to Step 5.

STEP 5. Check each hose for crushing or twisting.
Q: Is any hose crushed or twisted?

YES : Repair or replace the hose. Then go to Step 10.
NO :  Go to Step 6.

STEP 6. Check for oil leaks.
Q: Are there oil leaks?

YES : Repair it. Then go to Step 10.
NO :  Go to Step 7.

ACX01131

WHILE ENGINE
RUNNING

WHILE ENGINE
STOPPED

AB

FLUID FLUCTUATION

 

 

 

 

 

 

 

Content   ..  818  819  820  821   ..