Page 818 of 2453

DI-34
General Diagnostic Table
DIFFERENTIALS
8. General Diagnostic Table
A: INSPECTION
Symptom or trouble Possible cause Remedy
1. Oil leakage(1) Worn, scratched, or incorrectly seated
front or side oil seal. Scored, battered or
excessively wor n sliding surface of com-
panion flange.
Correct or replace.
(2) Clogged or damaged air breather. Clean, repair or replace.
(3) Loose bolts on differential spindle or
side retainer, or incorrectly fitted O-ring.
Tighten the bolts to specified torque.
Replace the O-ring.
(4) Loose rear cover attaching bolts or
damaged gasket.
Tighten the bolts to specified torque.
Replace gasket and apply liquid gasket.
(5) Loose oil filler or drain plug. Retighten and apply liquid gasket.
(6) Wear, damage or incorrect fitting of
spindle, side retainer or oil seal.
Correct or replace.
2. Seizure
NOTE:Seized or damaged parts should be re-
placed, and also other parts should be thor-
oughly checked for any defect and should
be repaired or replaced as required.
(1) Insufficient backlash for hypoid gear. Readjust or replace.
(2) Excessive preload for side, rear or
front bearing.
Readjust or replace.
(3) Insufficient or improper oil used. Replace seized part and fill with speci-
fied oil to specified level.
3. Damage
NOTE:Damaged parts should be replaced, and
also other parts should be thoroughly
checked for any defect and should be re-
paired or replaced as required.
(1) Improper backlash for hypoid gear. Replace.
(2) Insufficient or excessive preload for
side, rear or front bearing.
Readjust or replace.
(3) Excessive backlash for differential
gear.
Replace gear or thrust washer.
(4) Loose bolts and nuts such as hypoid
driven gear bolt
Retighten.
(5) Damage due to overloading. Replace.
4. Noises when starting or shifting
gears
NOTE:
Noises may be caused by differential as-
sembly, universal joint, wheel bearing, etc.
Find out what is actually making noise be-
fore disassembling.
(1) Excessive backlash for hypoid gear. Readjust.
(2) Excessive backlash for differential
gear.
Replace the differential case assembly.
(3) Insufficient preload for front or rear
bearing.
Readjust.
(4) Loose drive pinion nut. Tighten to the specified torque.
(5) Loose bolts and nuts such as side
bearing retainer attaching bolt.
Tighten to the specified torque.
5. Noises when cornering(1) Damaged differential gear. Replace the differential case assembly.
(2) Excessive wear or damage of thrust
washer.
Replace the differential case assembly.
(3) Broken pinion mate shaft. Replace the differential case assembly.
(4) Seized or damaged side bearing. Replace.
6. Gear Noise
NOTE:
Since noises from engine, muffler, trans-
mission, propeller shaft, wheel bearings,
tires, and body are sometimes mistaken for
noises from differential assembly, be care-
ful in checking them. Inspection methods to
locate noises include coasting, accelerat-
ing, cruising, and jacking-up all four wheels.
Perform these inspections according to the
condition of trouble. When listening to nois-
es, shift gears into four wheel drive and
fourth speed position, trying to pick up only
differential noise.
(1) Improper tooth contact of hypoid gear. Readjust or replace hypoid gear set.
(2) Improper backlash of the hypoid gear. Readjust.
(3) Scored or chipped teeth of hypoid
gear.
Replace hypoid gear set.
(4) Seized hypoid gear. Replace hypoid gear set.
(5) Improper preload for front or rear
bearings.
Readjust.
(6) Seized, cut-away or chipped front or
rear bearing.
Replace.
(7) Seized, cut-away or chipped side
bearing.
Replace.
(8) Differential carrier is vibrating. Replace the differential case assembly.
Page 821 of 2453
DS-4
General Description
DRIVE SHAFT SYSTEM
B: COMPONENT
1. PROPELLER SHAFT
(1) Propeller shaft Tightening torque: N·m (kgf-m, ft-lb)
(2) Bushing T1: 31 (3.2, 23.1)
(3) Rear differential (VA2-type) T2: 52 (5.3, 38.3)
DS-00353
(2)
(2)
T2
(1)
(3)
T1
Page 822 of 2453
DS-5
General Description
DRIVE SHAFT SYSTEM
2. FRONT AXLE
(1) Circlip (7) Boot band (13) Front hub unit bearing
(2) Baffle plate (8) Boot (PTJ) (14) Axle nut
(3) Outer race (PTJ) (9) Boot (EBJ)
(4) Snap ring (10) EBJ shaft ASSYTightening torque: N·m (kgf-m, ft-lb)
(5) Trunnion (11) Front housingT1: 240 (24.5, 177)
(6) Snap ring (12) Hub boltT2: 65 (6.6, 47.9)
(3)
(2)(1)
(13)
(4)
(5)
(14)
(9)
(10)
(12)
(7)
(6)
(11)
T2
T1
(8)
DS-00232
Page 823 of 2453
DS-6
General Description
DRIVE SHAFT SYSTEM
3. REAR AXLE
(1) Baffle plate (DOJ) (8) Boot band (15) Axle nut (olive color)
(2) Outer race (DOJ) (9) Boot (DOJ)
(3) Snap ring (10) EBJ shaft ASSYTightening torque: N·m (kgf-m, ft-lb)
(4) Inner race (11) Rear housingT1: 75 (7.6, 55.3)
(5) Ball (12) Back plateT2: 65 (6.6, 47.9)
(6) Cage (13) Rear hub unit bearingT3: 240 (24.5, 177)
(7) Snap ring (14) Hub bolt
Page 824 of 2453

DS-7
General Description
DRIVE SHAFT SYSTEM
C: CAUTION
Please clearly understand and adhere to the follow-
ing general precautions. They must be strictly fol-
lowed to avoid any injury to the person doing the
work or people in the area.
1. OPERATION
•Wear work clothing, including a cap, protective
goggles and protective shoes during operation.
•Remove contamination including dirt and corro-
sion before removal, installation or disassembly.
•Keep the disassembled parts in order and pro-
tect them from dust and dirt.
•Before removal, installation or disassembly, be
sure to clarify the failure. Avoid unnecessary re-
moval, installation, disassembly and replacement.
•Be careful not to burn yourself, because each
part on the vehicle is hot after running.
•Use SUBARU genuine grease etc. or equivalent.
Do not mix grease etc. with that of another grade or
from other manufacturers.
•Be sure to tighten fasteners including bolts and
nuts to the specified torque.
•Place shop jacks or rigid racks at the specified
points.
• Apply grease onto sliding or revolution surfaces
before installation.
•Before installing snap rings, apply sufficient
amount of grease to avoid damage and deforma-
tion.
•Before securing a part on a vise, place cushion-
ing material such as wood blocks, aluminum plate,
or shop cloth between the part and the vise.
2. OIL
When handling oil, follow the rules below to prevent
unexpected accidents.
•Prepare container and waste cloths when per-
forming work which oil could possibly spill. If oil
spills, wipe it off immediately to prevent from pene-
trating into floor or flowing outside, for environmen-
tal protection.
•Follow all government and local regulations con-
cerning waste disposal.
Page 828 of 2453

DS-11
Propeller Shaft
DRIVE SHAFT SYSTEM
13) Install an extension cap to the transmission.
NOTE:
If extension cap is not available, place vinyl bag
over opening and fasten with string to prevent gear
oil or ATF from leaking.
B: INSTALLATION
1) Insert the sleeve yoke into the transmission and
attach center bearing to body.
Tightening torque:
52 N·m (5.3 kgf-m, 38.3 ft-lb)
2) Align the matching marks and connect the flange
yoke and rear differential.
Tightening torque:
31 N·m (3.2 kgf-m, 23.1 ft-lb)
3) Install the heat shield cover.
4) Install the center exhaust pipe.
5) Install the rear exhaust pipe and muffler.
6) Lower the vehicle.
7) Connect the ground cable to the battery.
C: INSPECTION
NOTE:
Do not disassemble propeller shaft. Check the fol-
lowing and replace if necessary.
•Tube surface for dents of cracks
•Splines for deformation or abnormal wear
•Unsmooth joint operation or abnormal noise
•Center bearing for free play, noise or non-
smooth operation.
•Oil seals for abnormal wear or damage
•Damaged center bearing
Check the following points with propeller shaft in-
stalled in vehicle.
1. JOINTS AND CONNECTIONS
1) Remove the center exhaust pipe.
2) Remove the heat shield cover.
3) Check for any looseness of the yoke flange
mounting bolts which connect to the rear differen-
tial and center bearing bracket mounting bolts.
2. SPLINES AND BEARING
1) Remove the center exhaust pipe.
2) Remove the rear exhaust pipe and muffler.
3) Remove the heat shield cover.
4) Turn the propeller shaft by hand to see if abnor-
mal free play exists at splines. Also move yokes to
see if abnormal free play exists at spiders and
bearings.
(A) Extension cap
(A) Alignment mark
DS-00031
(A)
DS-00141
DS-00028
(A)
DS-00035
Page 831 of 2453

DS-14
Front Axle
DRIVE SHAFT SYSTEM
11) Remove the front arm ball joint from the front
housing.
12) Remove the PTJ from transmission.
13) Remove the front drive shaft assembly from the
hub. If it is hard to remove, use the ST.
ST1 926470000 AXLE SHAFT PULLER
ST2 28099PA110 AXLE SHAFT PULLER
PLATE
14) After scribing an alignment mark on the camber
adjusting bolt head, remove the bolts which con-
nect the front housing and strut, and disconnect the
front housing from the strut.
15) Remove the front axle.
B: INSTALLATION
1) Align the alignment mark on the camber adjust-
ing bolt head, and affix the front housing and strut
together using a new selflocking nut.
Tightening torque:
175 N·m (17.9 kgf-m, 129 ft-lb)
2) Install the front drive shaft.
STALLATION, Front Drive Shaft.>
3) Install the front arm ball joint to the front housing.
Tightening torque:
50 N·m (5.1 kgf-m, 36.9 ft-lb)
4) Install the ABS wheel speed sensor on the front
housing.
Tightening torque:
7.5 N·m (0.8 kgf-m, 5.5 ft-lb)
5) Install the disc rotor to hub.
6) Install the disc brake caliper to the front housing.
Tightening torque:
120 N·m (12.2 kgf-m, 88.5 ft-lb)
7) Install the stabilizer link.
8) Connect the tie-rod end ball joint to the knuckle
arm with a castle nut.
Tightening torque:
27.0 N·m (2.75 kgf-m, 19.9 ft-lb)
CAUTION:
When connecting the tie–rod, do not hit the cap
at bottom of tie–rod end with a hammer.
9) Tighten the castle nut to specified torque and
tighten further within 60° until the pin hole is aligned
with the slot in nut. Bend the cotter pin to lock.
FS-00106
DS-00145
ST2
ST1
DS-00356
(A) Cotter pin
(B) Castle nut
(C) Tie–rod
DS-00042
(C)
(B)
(A)
Page 832 of 2453

DS-15
Front Axle
DRIVE SHAFT SYSTEM
10) While depressing the brake pedal, tighten a
new axle nut (olive color) to the specified torque
and lock it securely.
Tightening torque:
240 N·m (24.5 kgf-m, 177 ft-lb)
CAUTION:
•Install the wheel after installation of axle nut.
Failure to follow this rule may damage the
wheel bearing.
•Be sure to tighten the axle nut to specified
torque. Do not overtighten it as this may dam-
age the wheel bearing.
11) After tightening the axle nut, lock it securely.
12) Install the wheel and tighten the wheel nuts to
specified torque.
Tightening torque:
110 N·m (11.2 kgf-m, 81.1 ft-lb)
C: DISASSEMBLY
1) Remove the four bolts from the front housing,
and remove the front hub unit bearing and disc cov-
er.
CAUTION:
•Do not get closer the tool which charged
magnetism to magnetic encoder.
•Be careful not to damage the magnetic en-
coder.
2) Disassemble the front hub unit bearing.
DS-20, DISASSEMBLY, Front Hub Unit Bearing.>
DS-00048
(A) Front housing
(1) Magnetic encoder
(2) Front hub unit bearing
(A)
DS-00357
(2)
DS-00250
(1)