2005 MITSUBISHI 380 Workshop Manual

GENERAL DESCRIPTION
REAR AXLE27-2
GENERAL DESCRIPTIONM1271000100326
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 DIAGNOSISM1271004100254
Noise from the rear axle may be caused by defects in
the components.
REAR AXLE DIAGNOSTIC TROUBLESHOOTING STRATEGYM1271004200273
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.

REAR AXLE DIAGNOSIS
REAR AXLE27-3
SYMPTOM PROCEDURESM1271004400222
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 Nm (54 5 ft-lb). Then go to
St e p 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.

SPECIAL TOOLS
REAR AXLE27-4
SPECIAL TOOLSM1271000600525
ON-VEHICLE SERVICE
WHEEL BEARING END PLAY CHECKM1271000900474
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)
3. If the play exceeds the limit, replace the rear hub assembly.
4. After having finished the inspection, install the brake disc,
caliper assembly and tighten the caliper assembly mounting
bolts to the specified torque.
Tightening torque: 60
5 Nm (45 3 ft-lb) TOOL TOOL NUMBER AND
NAMESUPERSESSION APPLICATION
MB990767
Front hub and flange
yoke HolderMB990767-01 Hub fixing
MB991618
Hub bolt removerGeneral service tool Hub bolt removal
MB991897
Ball joint removerMB991113-1,
MB990635-01 or general
service toolBall joint disconnection
NOTE: Steering linkage
puller(MB990635 or
MB991113)is also used
to disconnect knuckle
and toe control arm ball
joint.

ON-VEHICLE SERVICE
REAR AXLE27-5
REAR HUB ROTARY-SLIDING RESISTANCE
CHECK
M1271001100266
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 degree 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 pounds)
4. If the rotary
sliding resistance exceeds the limit value,
replace the rear hub assembly.
5. After having finished the inspection, install the brake disc,
caliper assembly and tighten the caliper assembly mounting
bolts to the specified torque.
Tightening torque: 60
5 Nm (45 3 ft-lb)
HUB BOLT REPLACEMENTM1271001000270
Required Special Tools:
MB990767: Front Hub and Flange Yoke Holder
MB991618: Hub Bolt Remover
1. Remove the caliper assembly, and suspend the caliper
assembly with a wire and remove the brake disc.
2. Use special tool MB991618 to remove the hub bolts.
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 brake disc, caliper assembly and tighten the
caliper assembly mounting bolts to the specified torque.
Tightening torque: 60
5 Nm (45 3 ft-lb)

REAR AXLE HUB ASSEMBLY
REAR AXLE27-6
REAR AXLE HUB ASSEMBLY
REMOVAL AND INSTALLATIONM1271002000411
For vehicles with ABS, be careful not to strike the pole piece at the tip of the rear wheel speed sen-
sor with tools during servicing work.
The rear hub assembly should not be dismantled.
REMOVAL SERVICE POINT
.
<> CALIPER ASSEMBLY REMOVAL
Secure the removed caliper assembly with wire, etc.
.
<> BRAKE DISC REMOVAL
If the brake disc is seized, install M8 1.25 bolts as shown, and
remove the disc by tightening the bolts evenly and gradually.
.
REMOVAL STEPS
1. REAR WHEEL SPEED SENSOR

2. BRAKE HOSE CLAMP BOLT
<>3. CALIPER ASSEMBLY
<>4. BRAKE DISC
5. PLUG
<>6. REAR HUB ASSEMBLYREMOVAL STEPS (Continued)