Mitsubishi Evolution X. Manual — part 885

For the rear axle, the unit bearing (double row angu-
lar contact ball bearing) in which the hub and ball
bearing are incorporated has been adopted for the
rear wheel bearing, and the EBJ-ETJ type constant
velocity joint for the rear driveshaft.
There are the following features.

• The lightweight rear driveshaft and compact

EBJ-ETJ type constant velocity joint have been
equipped.

• The rear driveshaft spline diameter on the

wheel-side and differential-side (LH) has been
increased, improving torsional strength.

• The ABS magnetic encoder for wheel speed

detection has been integrated into the rear wheel
bearing, and the protector cover of magnetic
encoder for wheel speed detection has been
equipped to the driveshaft.

• The lead-free grease has been adopted for the

constant velocity joint.

• Hexavalent chromium has been eliminated from

the dust cover material and protector cover of
magnetic encoder for wheel speed detection.

• The AYC differential has been equipped.

NOTE:

EBJ (High Efficiency Compact Birfield Joint): the

lighter and smaller constant velocity joint com-
pared with the conventional BJ has been
achieved by adopting the eight small balls.

ETJ (High Efficiency Compact Tripod Joint): The

lighter and smaller constant velocity joint com-
pared with the conventional TJ has been
installed.

CONSTRUCTION DIAGRAM

AC706664

ETJ

EBJ

AC608248

ETJ

AYC differential

Rear driveshaft
(LH)

Rear driveshaft
(RH)

Rear wheel bearing

Oil seal

Magnetic
encoder

Rear wheel
hub assembly

Magnetic encoder
protection cover

Rear
driveshaft
nut

Split pin

Rear wheel
hub assembly

GENERAL SPECIFICATIONS

TSB Revision

REAR AXLE

27-3

GENERAL SPECIFICATIONS

M1271000200204

Item

Specification

Rear axle
Rear wheel
bearing

Type

Unit bearing (double-row angular contact ball
bearing)

Rear driveshaft

Type

Outer

EBJ

Inner

ETJ

Shaft length* x
Shaft diameter
mm (in)

434

× 25 (17.1 × 0.98)

456

× 25 (18.0 × 0.98)

Differential
Reduction gear type

Hypoid gear

Reduction ratio

3.307

Number of teeth

Drive gear

Drive pinion

Bearings (Outside diameter

Inside diameter) mm (in)

Side

× 37 (2.8 × 1.5) <LH>, 92 × 67 (3.6 × 2.6) <RH>

Front

× 25 (2.4 × 1.0)

Rear

× 35 (2.8 × 1.4)

NOTE: *: Indicates the distance between the center
of each joint.

SERVICE SPECIFICATIONS

M1271000300999

Item

Standard value

Limit

Rear axle total backlash mm (in)

−

6 (0.2)

Wheel bearing end play mm (in)

−

0.05 (0.002)

Wheel bearing rotation starting torque N

⋅ m(in-lb)

−

1.4 (12.39)

ETJ boot assembly dimension mm (in)

± 3 (3.14 ±

0.12)

−

Hydraulic pressure of hydraulic unit (under forced activation) MPa
(psi)

0.9

− 1.1 (130 −

159)

−

LUBRICANTS

TSB Revision

REAR AXLE

27-4

LUBRICANTS

M1271000400617

Item

Specified lubricant

Quantity

AYC differential

Differential mechanism part MITSUBISHI Genuine

DIA QUEEN LSD gear
oil

0.55

± 0.02 dm

(0.58

± 0.02 qt)

Torque transfer mechanism
part

DIAMOND ATF SP III

0.55

− 0.60 dm

(0.58

− 0.63 qt)

Torque transfer mechanism
part oil seal lip

Vaseline

As required

EBJ joint

Repair kit grease

110

± 10 g (3.9 ± 0.3 oz)

ETJ joint

Repair kit grease

125

± 10 g (4.4 ± 0.3 oz)

SEALANT AND ADHESIVE

M1271000500540

Item

Specified sealant and adhesive

Vent plug

™ AAD Part No.8672, 8679, 8678, 8661, 8663 or

equivalent

Cover (AYC differential)

REAR AXLE DIAGNOSIS <EXCEPT AYC>

INTRODUCTION

M1271004100287

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

TROUBLESHOOTING STRATEGY

M1271004200314

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

M1271004300377

Symptom

Inspection
procedure

Reference page

Driveshaft

Noise during wheel rotation

P.27-5

Differential

Oil leakage

P.27-5

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Mitsubishi Evolution X. Manual — part 885

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