Mitsubishi Montero (2004+). Manual - part 466

SPECIAL TOOLS

TSB Revision

REAR AXLE

27-3

MB990810
Side bearing puller

MB990810-01

• Removal of the side bearing 

inner race

• Removal of the companion 

flange

MB991407
Differential rear support 
arbor

−

Removal of the side bearing 
inner race

MB990850
End yoke holder

−

• Removal of the self-locking 

nut

• Adjustment of the drive 

pinion turning torque

MD998801
Bearing remover

−

Removal of the drive pinion rear 
bearing inner race

MB991168
Drive pinion oil seal installer

−

Press-fitting of the drive pinion 
oil seal

MB991445
Bushing remover and 
installer base

−

Press-fitting of the drive pinion 
rear bearing outer race (Use 
together with MB990938)

TOOL

TOOL NUMBER AND 
NAME

SUPERSESSION

APPLICATION

MB990810

MB991407

MB990850

MB991168

SPECIAL TOOLS

TSB Revision

REAR AXLE

27-4

MB991171
Pinion height gauge set

A: MB991169

Drive pinion gauge 
attachment

B: MB991170

Cylinder gauge

C: MB990819

Drive pinion gauge

−

Measurement of the pinion 
height

MB991768
Drive pinion gauge set

A: MB991770

Head

−

MB991534
Cylinder gauge

−

MB990326
Preload socket

General service 
tool

• Measurement of the starting 

torque of ball bearing

• Measurement of the starting 

torque of ball bearing

MB990685
Torque wrench

MB990998
Front hub remover and 
installer

MB990998-01 or 
General service 
tool

• Measure at the wheel 

bearing rotation starting 
torque

• Wheel bearing backlash 

check

MB990802
Bearing installer

MB990802-01

Press-fitting of the drive pinion 
rear bearing inner race

MB990727
Drive pinion oil seal installer

−

Press-fitting of the drive pinion 
oil seal

TOOL

TOOL NUMBER AND 
NAME

SUPERSESSION

APPLICATION

MB991171

A

B

C

MB991768

A

MB991534

MB990326

MB990685AC

MB990998

MB990802

MB990727

SPECIAL TOOLS

TSB Revision

REAR AXLE

27-5

MD998812
Installer cap

−

Press-fitting of the side bearing 
inner race

MD998829
Installer adapter

−

MB990925
Bearing and oil seal installer 
set

A: MB990926 

− MB990937

Installer adapter

B: MB990938

Bar

C: MB990939

Brass bar

MB990925-01 or 
General service 
tool

• Press-fitting of oil seal

• Inspection of drive gear tooth 

contact

• Removal of bearing outer 

race

For details of each installer, 
refer to GROUP 26 

− Special 

Tools 

P.26-9

.

MB991045
Bushing remover and 
installer

A: MB991050

Base(B)

−

Removal of the rear suspension 
crossmember bushing

MB991159
Bushing remover and 
installer

A: MB991162

Bolt

B: MB991218

Bearing

−

Removal and press-fitting of the 
rear suspension crossmember 
bushing

MB991816
Bushing remover and 
installer base

−

MB990955
Oil seal installer

−

Press-fitting of the rear 
suspension crossmember 
bushing

TOOL

TOOL NUMBER AND 
NAME

SUPERSESSION

APPLICATION

MB990925

A

B

C

MB991045AB

A

MB991159AB

A

B

MB990955

REAR AXLE DIAGNOSIS

TSB Revision

REAR AXLE

27-6

REAR AXLE DIAGNOSIS

INTRODUCTION

M1271004100102

Noise from the drive shaft or differential may be 
caused by defects in the components.

TROUBLESHOOTING STRATEGY

M1271004200109

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 
rear axle 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 malfunction is eliminated.

SYMPTOM CHART

M1271004300214

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: Noise while Wheels are Rotating <DRIVE SHAFT>

DIAGNOSIS

STEP 1. Check whether the drive shaft is bent.

Q: Is the drive shaft bent?

YES : 

Replace the part. Then go to Step 3.

NO : 

Go to Step 2.

STEP 2. Check the wheel bearing of rear hub 
assembly for wear or damage.

Q: Is the wheel bearing damaged or worn?

YES : 

Replace the part. Then go to Step 3.

NO : 

Go to Step 3.

STEP 3. Retest the system.

Q: Is the abnormal noise eliminated?

YES : 

The procedure is complete.

NO : 

Start over at Step 1.

SYMPTOM

INSPECTION 
PROCEDURE

REFERENCE 
PAGE

Drive shaft

Noise while wheels are rotating

1

P.27-6

Grease leakage

2

P.27-7

Differential

Constant noise

3

P.27-7

Gear noise while driving

4

P.27-8

Gear noise while coasting

5

P.27-9

Bearing noise while driving or coasting

6

P.27-10

Noise while turning

7

P.27-10

Heat

8

P.27-10

Oil leakage

9

P.27-11