2005 MITSUBISHI 380 Workshop Manual

SPECIFICATIONS
ENGINE AND EMISSION CONTROL17-86

26-1
GROUP 26
FRONT AXLE
CONTENTS
GENERAL DESCRIPTION. . . . . . . . .26-2
FRONT AXLE DIAGNOSIS . . . . . . . .26-2
TROUBLESHOOTING STRATEGY . . . . . . 26-2
SYMPTOM CHART. . . . . . . . . . . . . . . . . . . 26-3
SYMPTOM PROCEDURES . . . . . . . . . . . . 26-3
SPECIAL TOOLS . . . . . . . . . . . . . . . .26-4
ON-VEHICLE SERVICE . . . . . . . . . . .26-8
WHEEL BEARING END PLAY CHECK . . . 26-8
HUB BOLT REPLACEMENT . . . . . . . . . . . 26-8
FRONT AXLE HUB ASSEMBLY . . . .26-9
REMOVAL AND INSTALLATION . . . . . . . . 26-9
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . 26-12
DRIVE SHAFT ASSEMBLY . . . . . . . .26-13
REMOVAL AND INSTALLATION . . . . . . . . 26-13
DISASSEMBLY AND ASSEMBLY . . . . . . . 26-18
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . 26-25
BJ BOOT REPLACEMENT . . . . . . . . . . . . . 26-26
SPECIFICATIONS . . . . . . . . . . . . . . .26-29
FASTENER TIGHTENING SPECIFICATIONS26-29
GENERAL SPECIFICATIONS . . . . . . . . . . 26-29
SERVICE SPECIFICATIONS . . . . . . . . . . . 26-29
LUBRICANTS . . . . . . . . . . . . . . . . . . . . . . . 26-30

GENERAL DESCRIPTION
FRONT AXLE26-2
GENERAL DESCRIPTIONM1261000100370
The front axle consists of front hubs, knuckles, wheel
bearings and drive shafts, and has the following fea-
tures:
The wheel bearing incorporates double-row
angular contact ball bearing for reduced friction.
The front 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.
The driveshaft incorporates BJ-PTJ type constant
velocity joints with high transmission efficiency for
low vibration and noise.
Due to the use of the inner shaft and bracket
assembly, the right and left drive shafts are
approximately the same in length. This reduces
noise, vibration and torque steer.L-RH>
The dynamic damper is mounted on the LH drive-
shaft.
ABS rotor for detecting the wheel speed is
press-fitted to the BJ.
NOTE: .
TJ: Tripod Joint
PTJ: Pillow Tripod Joint
BJ: Birfield Joint
CONSTRUCTION DIAGRAM
FRONT AXLE DIAGNOSIS
TROUBLESHOOTING STRATEGYM1261005600240
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 front axle fault.
1. Gather information from the customer.

FRONT AXLE DIAGNOSIS
FRONT AXLE26-3
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 CHARTM1261005700269
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.
(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 drive shaft and inner shaft for bending.
Q: Is the drive shaft and inner shaft bent?
YES : Replace the part. Then go to Step 5.
NO : Go to step 3.
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 drive shaft assembly for wear or
damage.
Q: Is the drive shaft assembly worn or damaged?
YES : Replace the drive shaft assembly. Then go to Step 5.
NO : There is no action to be taken. SYMPTOM INSPECTION
PROCEDUREREFERENCE PAGE
Drive shaft Noise during wheel rotation 1
P.26-3
Noise due to excessive play of wheel in turning
direction2
P.26-4

SPECIAL TOOLS
FRONT AXLE26-4
STEP 5. Retest the system.
Q: Is the abnormal noise eliminated?
YES : The procedure is complete.
NO : Repeat from Step 1.
INSPECTION PROCEDURE 2: Noise Due to Excessive Play of Wheel in Turning Direction
DIAGNOSIS
STEP 1. Check for play in the inner shaft and side
gear serration, the drive shaft and side gear
serration, or the drive shaft 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 TOOLSM1261000600405
TOOL TOOL NUMBER
AND NAMESUPERSESSION APPLICATION
MB990767
Front hub and
flange yoke
holderMB990767-01 Fixing of the hub
MB991618
Hub bolt removerGeneral service
toolRemoval of the hub bolt
MB991897
Ball joint
removerMB991113-01,
MB990635-01 or
General service
tool Knuckle and tie rod end ball joint
disconnection
NOTE: Steering linkage puller
(MB990635 or MB991113)is also used
to disconnect knuckle and tie rod end
ball joint.

SPECIAL TOOLS
FRONT AXLE26-5
MB990241 Axle
shaft puller
A: MB990242
Puller shaft
B: MB990244
Puller barMB990241-01 or
General service
toolRemoval of the drive shaft
MB991354
Puller bodyGeneral service
tool
MB990590 Rear
axle shaft oil seal
remover
A: MB990212
Adapter
B: MB990211
Slide hammer
Removal of the front wheel hub
A: MB991017
B: MB990998
C: MB991000
A, B: Front hub
remover and
installer
C: SpacerMB990998-01
Removal of the hub
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 wrenchGeneral service
toolMeasurement of hub starting torque
MB990326
Preload socketGeneral service
tool
MB990810
Side bearing
pullerGeneral service
tool
Removal of the center bearing
bracket
Removal of the wheel bearing inner
race (outside) TOOL TOOL NUMBER
AND NAMESUPERSESSION APPLICATION

SPECIAL TOOLS
FRONT AXLE26-6
MB991172
Inner shaft
installer basePress-fitting of the inner shaft
MB991248
Inner shaft
removerMD998348-01 or
General service
tool Removal of the inner shaft
MB991561
Boot band
crimping toolMB991561 BJ boot (resin boot) band installation
MB990925
Bearing and oil
seal installer setMB990925-01 or
General service
tool
Removal and installation of the
center bearing
Press-fitting of the dust seal outer,
inner
MB990890
Rear suspension
bushing baseMB990890-01 Press-fitting of the dust seal outer, inner TOOL TOOL NUMBER
AND NAMESUPERSESSION APPLICATION

SPECIAL TOOLS
FRONT AXLE26-7
TOOL TYPE TOOL NUMBER O D mm (in)
A MB990926 39.0 (1.54)
MB990927 45.0 (1.77)
MB990928 49.5 (1.95)
MB990929 51.0 (2.00)
MB990930 54.0 (2.13)
MB990931 57.0 (2.24)
MB990932 61.0 (2.40)
MB990933 63.5 (2.50)
MB990934 67.5 (2.66)
MB990935 71.5 (2.81)
MB990936 75.5 (2.97)
MB990937 79.0 (3.11)
B MB990938
C MB990939