Mitsubishi Evolution X. Manual — part 851

FRONT AXLE DIAGNOSIS

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FRONT AXLE

26-5

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: Noise during Wheel Rotation

DIAGNOSIS

STEP 1. Check the wheel bearing end play.
(1) Remove the caliper assembly and suspend it with a wire.
(2) Remove the brake disc from the front hub.

AC703296 AB

(3) Attach a dial gauge as shown in the illustration, and then

measure the end play while moving the hub in the axial
direction.

Limit: 0.05 mm (0.002 inch)

Q: Is the wheel bearing end play within the limit?

YES : Go to step 2.
NO : Replace the part, then go to Step 5.

STEP 2. Check the driveshaft and inner shaft for bending.
Q: Is the driveshaft and inner shaft bent?

YES : Go to step 3.
NO : Replace the part. Then go to Step 5.

STEP 3. Check the center bearing for wear.
Q: Is the center bearing worn?

YES : Replace the bearing. Then go to Step 5.
NO : Go to step 4.

STEP4. Check the driveshaft assembly for wear or
damage.
Q: Is the driveshaft assembly worn or damaged?

YES : Replace the driveshaft assembly. Then go to Step 5.
NO : There is no action to be taken.

STEP 5. Retest the system.
Q: Is the abnormal noise eliminated?

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

SPECIAL TOOLS

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FRONT AXLE

26-6

INSPECTION PROCEDURE 2: Noise Due to Excessive Play of Wheel in Turning Direction

DIAGNOSIS

STEP 1. Check for play in the output shaft and
side gear serration, the driveshaft and side gear
serration, or the driveshaft and front hub
serration.

Q: Is the play found?

YES :

Replace the part. Then go to Step 2.

NO :

The procedure is complete.

STEP 2. Retest the system.

Q: Is the abnormal noise eliminated?

YES :

The procedure is complete.

NO :

Repeat from Step 1.

SPECIAL TOOLS

M1261000601260

Tool

Tool number and
name

Supersession

Application

B990767

MB990767
Front hub and flange
yoke holder

MB990767-01

Fixing of the hub

MB991618

MB991618
Hub bolt remover

General service tool

Removal of the hub bolt

MB991897

MB991897 or
MB992011
Ball joint remover

MB991113-01,
MB990635-01 or
General service tool

Ball joint disconnection
NOTE: Steering linkage puller
(MB990635 or MB991113)is also
used to disconnect knuckle and tie
rod end ball joint.

MB990241AD

B

A

MB990241
Axle shaft puller

A: MB990242

Puller shaft

B: MB990244

Puller bar

MB990241-01 or
General service tool

• Removal of the driveshaft

• Removal of hub assembly

MB991354

MB991354
Puller body

General service tool

MB991721
Slide hammer

−

Removal of the output shaft

A

B

C

MB991017

ON-VEHICLE SERVICE

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FRONT AXLE

26-7

ON-VEHICLE SERVICE

WHEEL BEARING END PLAY CHECK

M1261001100373

1. Remove the front caliper assembly and front disk brake, and

retain the front caliper assembly with a wire and the like to
prevent from falling (Refer to

P.26-9

).

AC102438

2. Set a dial gauge as shown in the figure. Move the hub in the

axial direction and measure the end play.

Limit: 0.05 mm (0.002 inch)

3. After checking, install the front brake disk and the front

caliper assembly (Refer to

P.26-9

).

A: MB991017
B: MB990998
C: MB991000
A, B: Front hub

remover and
installer

C: Spacer

MB990998-01

• Provisional holding of the wheel

bearing

• Measurement of hub starting

torque

• Measurement of wheel bearing

end play
NOTE: MB991000, which belongs
to MB990998, should be used as a
spacer.

MB990685
Torque wrench

General service tool

Measurement of hub starting torque

MB990326

MB990326
Preload socket

General service tool

MB991561

MB991561
Boot band crimping
tool

MB991561

EBJ boot (resin boot) band
installation

Tool

Tool number and
name

Supersession

Application

ON-VEHICLE SERVICE

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FRONT AXLE

26-8

HUB BOLT REPLACEMENT

M1261001000558

Required Special Tools:

• MB990767: Front Hub and Flange Yoke Holder

• MB991618: Hub Bolt Remover

1. Remove the front caliper assembly and front disk brake, and

retain the front caliper assembly with a wire and the like to
prevent from falling (Refer to

P.26-9

).

AC302114

MB991618

AB

Hub bolt

2. Use special tool MB991618 to remove the hub bolts.

AC612767AD

MB990767

Plain
washer

3. Install the plain washer to the new hub bolt, and install the

bolt with a nut while holding the hub with special tool
MB990767.

4. Install the front brake disk and the front caliper assembly

(Refer to

P.26-9

).