Mitsubishi 380. Manual — part 362

SPECIFICATIONS

FRONT AXLE

26-30

LUBRICANTS

M1261000400412

ITEM

SPECIFIED LUBRICANT

QUANTITY

PTJ boot grease

Repair kit grease

220

± 10 g (7.8 ± 0.3 oz)

BJ boot grease

Repair kit grease

165

± 10 g (5.8 ± 0.3 oz)

Dust seal inner grease

Repair kit grease

14

− 20 g (0.5 − 0.7 oz)

Dust seal outer grease

Repair kit grease

8

− 12 g (0.3 − 0.4 oz)

27-1

GROUP 27

REAR AXLE

CONTENTS

GENERAL DESCRIPTION. . . . . . . . .

27-2

REAR AXLE DIAGNOSIS . . . . . . . . .

27-2

INTRODUCTION TO REAR AXLE DIAGNOSIS

27-2

REAR AXLE DIAGNOSTIC
TROUBLESHOOTING STRATEGY . . . . . .

27-2

SYMPTOM PROCEDURES . . . . . . . . . . . .

27-3

SPECIAL TOOLS. . . . . . . . . . . . . . . .

27-4

ON-VEHICLE SERVICE. . . . . . . . . . .

27-4

WHEEL BEARING END PLAY CHECK . . .

27-4

REAR HUB ROTARY-SLIDING RESISTANCE
CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . .

27-5

HUB BOLT REPLACEMENT. . . . . . . . . . . .

27-5

REAR AXLE HUB ASSEMBLY . . . . .

27-6

REMOVAL AND INSTALLATION . . . . . . . .

27-6

INSPECTION. . . . . . . . . . . . . . . . . . . . . . . .

27-7

KNUCKLE . . . . . . . . . . . . . . . . . . . . . .

27-8

REMOVAL AND INSTALLATION . . . . . . . .

27-8

INSPECTION. . . . . . . . . . . . . . . . . . . . . . . .

27-9

SPECIFICATIONS . . . . . . . . . . . . . . .

27-10

FASTENER TIGHTENING SPECIFICATIONS

27-10

SERVICE SPECIFICATIONS . . . . . . . . . . .

27-10

HOME

GENERAL DESCRIPTION

REAR AXLE

27-2

GENERAL DESCRIPTION

M1271000100326

The rear axle has the following features:

• The wheel bearing incorporates a unit ball bear-

ing (double-row angular contact ball bearing) for
reduced friction.

• The rear wheel hub assembly combines the hub,

wheel bearing, and oil seal in a single unit for
fewer parts, better durability, improved assembly
precision, and better structural organization.

• ABS rotor for detecting the wheel speeds is

press-fitted to the rear hub.

CONSTRUCTION DIAGRAM

REAR AXLE DIAGNOSIS

INTRODUCTION TO REAR AXLE DIAGNOSIS

M1271004100254

Noise from the rear axle may be caused by defects in
the components.

REAR AXLE DIAGNOSTIC TROUBLESHOOTING STRATEGY

M1271004200273

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

Procedures.

4. Verify malfunction is eliminated.

AC305169 AB

REAR HUB

OIL SEAL

WHEEL BEARING

ABS ROTOR

REAR AXLE DIAGNOSIS

REAR AXLE

27-3

SYMPTOM PROCEDURES

M1271004400222

INSPECTION PROCEDURE 1: Abnormal Noise

DIAGNOSIS

STEP 1. Check the rear hub assembly installation bolts for
looseness.

Q: Are the rear hub assembly installation bolts loosened?

YES : Tighten the rear hub assembly installation bolts to the

specified torque 73

± 7 N⋅m (54 ± 5 ft-lb). Then go to

Step 4.

NO : Go to Step 2.

STEP 2. Check the wheel bearing end play.
(1) Remove the caliper assembly, and suspend the caliper

assembly with a wire and remove the brake disc.

(2) Check the bearing's end play. Place a dial gauge against

the hub surface; then move the hub in the axial direction
and check whether or not there is end play.

Limit: 0.05 mm (0.002 inch)

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

YES : Go to Step 3.
NO : Replace the rear hub assembly, then go to Step 4.

STEP 3. Check the rear hub rotary-sliding resistance.
(1) Remove the caliper assembly, and suspend the caliper

assembly with a wire and remove the brake disc.

(2) Turn the hub a few times to seat the bearing.
(3) Wind a rope around the hub bolt and turn the hub by pulling

at a 90

° angle with a spring balance. Measure to determine

whether or not the rotary-sliding resistance of the rear hub
is within the limit value.

Limit: 24 N (5.4 lbs)

Q: Is the rear hub rotary-sliding resistance within the limit?

YES : Go to Step 4.
NO : Replace the rear hub assembly, then go to Step 4 .

STEP 4. Retest the systems.

Q: Are abnormal noises generated?

YES : Return to Step 1.
NO : The procedure is complete.

AC205869AB

AC205870