wheel ISUZU TROOPER 1995 Manual PDF

48-6 REAR AXLE
1••1 INSTALLATION
17. Differential assembly
• Refer to "DIFFERENTIAL ASSEMBLY" in this
section.
16.
Axle shaft assembly
• Tighten the bearing holder mounting nut to the
specified torque.
~~~ Torque N·m (lb·ft) 74 (54)
• Be sure not to damage the oil seal by the spline
of the shaft.
15. Brake
pipe
14. Antilock brake system (ABS) speed sensor and
harness
• Refer to Section 5A4 "4-WHEEL ANTI-LOCK
BRAKE SYSTEM (ABS)".
13. Brake disc
12. Brake
caliper
• Refer to Section 5A2 "DISC BRAKES".
11.
Axle housing assembly
10. Coil spring and insulator
9. Bolt and nut
• For the procedures in Items 9-5, refer to Section
3D "REAR SUSPENSION".
8. Bolt and nut
7. Nut
6. Nut
5. Nut
4. Brake tube flare nut
• Refer to Section 5A2 "DISC BRAKES".
3a. Rear Wheel Antilock (RWAL) speed sensor,
bracket and harness connector
• Tighten the speed sensor bolt to the specified
torque.
1~1 Torque N-m (lb·ft) j 24 (18)
3. ABS connector and bracket
2. Breather hose
1. Parking brake cable
• Refer to Section 5C "PARKING BRAKES".

AXLE SHAFT
1
I
1••1 REMOVAL
Preparation:
• Raise the vehicle.
12 11
2
Fig. 4B-6
• Remove tires and wheels. Refer to Section 3E
"WHEELS & TIRES".
1. Brake caliper
• Use a wire to attach the brake caliper to the
frame. Refer to
Section 5A2 "DISC BRAKES".
2. Brake disc
3. ABS sensor (If equipped with ABS)
4. Parking brake assembly
• Refer to Section 5C "PARKING BRAKES".
5. Bolt (Behind the back plate)
• Remove the parking brake cable mounting
bolts (Fig. 4B-7).
REAR AXLE 48-7
Removal steps
1. Brake caliper
2. Brake disc
3. Antilock brake system (ABS)
speed sensor
4. Parking brake assembly
5. Bolt
6. Nut 7. Axle shaft assembly 8. Snap ring
9. Retainer
10. Bearing
11. Bearing holder
12. Back plate
13. Wheel pin
Installation steps To install, follow the removal
steps
in the reverse order.
Bolt
Fig. 4B-7

48 - 8 REAR AXLE
6. Nut
• Remove the bearing holder mounting nuts.
7. Axle shaft assembly
NOTE:
• Be sure not to damage the oil seal.
8. Snap ring
9. Retainer
• Using a special tool and press, remove
together with the bearing holder (Fig. 4B-8).
1 ®I Bearing remover: J-39211
J-39211
Fig. 4B-8
10. Bearing
11. Bearing
holder
12. Back plate
13. Wheel pin (Fig. 4B-9)
1®.1 • Remove the wheel pins using a special tool.
Remover: J-6627-A
J-6627-A
Fig. 4B-9
I L•l INSPECTION AND REPAIR
Make necessary correction or parts replacement if
wear, corrosion or any other abnormal condition are
found through inspection.
Visual check
Check the following parts for wear, damage, noise or
any other abnormal conditions.
• Axle shaft
• Bearing
AXLE SHAFT
• When checking the axle shaft, pay special
attention to the splined portions and replace
the shaft if distortion or step wear is
noticeable. Correct slight step wear with a
grinder (Fig. 4B-10).
Fig. 4B-10
~~~ Axle shaft run-out (Fig. 4B-11)
Limit mm(in) 1.0 (0.039)
350 mm (13.78 in)
Fig. 4B-11
•

1 t!!.l Axle shaft flange run-out (Fig. 4B-12)
Limit mm (in) I 0.08 (0.003)
160 mm (6.3 in)
Fig. 4B-12
OIL SEAL REPLACEMENT
• Remove the oil seal carefully not to damage
the bearing holder bore (Fig. 4B-13).
When installing, use special tool.
1®1 Oil seal installer: J-39379
Fig. 4B-13
I••IINSTALLATION
13. Wheel pin
12. Back plate
11. Bearing holder
10. Bearing
9. Retainer
J-39379
1 ®I • Using a special tool, press fit together with
the bearing (Fig. 4B-14).
Bearing
installer: J-39212
8.
7.
6.
Fig. 4B-14
Snap ring
Axle shaft assembly
NOTE:
REAR AXLE 48-9
39212
Be sure not to damage the oil seal.
Nut
• Tighten the bearing holder mounting nut to
the specified torque.
I~I ___ T_o_rq_u_e __ N_·_m_(_lb_·f_t)~l _____ 7_4_(~5~4) ____ ___
5
4.
3.
2.
1
Bolt (Behind the back plate)
• Fix the parking brake cable mounting bolt.
Parking brake assembly
• Refer to Section 5C "PARKING BRAKES".
Antilock brake system sensor (If equipped with
antilock brake system)
Brake disc
Brake caliper
• Refer to Section 5A2 "DISC BRAKES".

E) INSTALLATION
5. Collapsible spacer
• Discard the used collapsible spacer and install
a new one.
4. Outer bearing
NOTE:
• Do not drive in, but just temporarily set in the
outer bearing
by hand, which should be
indirectly pressed in finally by tightening the
flange nut.
3. Oil seal
1"?.:\1 • Use the seal installer to install a new oil seal that
l.::::'i:il has been soaked in axle lubricant.
Installer:
J-37263
DIFFERENTIAL ASSEMBL V
~ 1
REAR AXLE 48-11
J-37263
Pinion oil seal
Fig. 4B-17
2. Flange
1. Flange nut
• Refer to "DIFFERENTIAL ASSEMBLY (UNIT
REPAIR)" for flange nut reassembly in this
section.
NOTE:
• Discard the used nut and install a new one.
3
/
Removal steps
1. Parking brake cable
2. Nut 3. Axle shaft assembly 4. Bolt and nut 5. Differential assembly
Installation
steps
To install, follow the removal steps in the reverse order.
Fig. 4B-18
E) REMOVAL
Preparations:
• Jack up and .support the frame with stands.
• Remove the wheel and tire. Refer to Section 3E
"WHEELS & TIRES".
•
Drain the differential oil. •
Remove
the propeller shaft. Refer to Section 4A
"PROPELLER SHAFT".
•
Remove the RWAL speed sensor. Refer to Section
5A3
"REAR WHEEL ANTILOCK BRAKE SYSTEM
(RWAL)".
•
Remove the ABS speed sensor. Refer to Section
5A4
"4-WHEEL ANTI-LOCK BRAKE SYSTEM
(ABS)".

DIFFERENTIAL CAGE ASSEMBLY
2
Fig. 48-53
REAR AXLE 48-23
Disassembly steps 1. Bolt 2. Ring gear 3. Exciter ring (If equipped
with rear wheel anti lock) 4. Lock pin
5. Cross pin 6. Pinion gear
7. Side gear
8. Thrust washer 9. Differential cage
Reassembly steps
To reassemble, follow the
disassembly steps in the
reverse order.
1•! .. 1 DISASSEMBLY 4. Lock pin
1. Bolt
2. Ring gear
3. Exciter
ring (If equipped with rear wheel
antilock)
• Remove exciter ring from the differential cage
using a mallet
or a copper hammer (Fig. 48-54).
Fig. 48-54
• Break staking on the lock pin, using a 5 mm
(0.20 in) diameter drill (Fig. 48-55).
Fig. 48-55

48-26 REAR AXLE
Fig. 48-63
4. Lock pin
• After lock pin installation, stake the cage to
secure the lock pin (Fig. 48-64).
Fig. 48-64
3. Exciter ring (If equipped with rear wheel
antilock)
• Press the exciter ring on the differential cage
using the ring gear
as a pilot (Fig. 48-65).
NOTE:
Discard used exciter ring and install new one.
Fig. 48-65
2. Ring gear
r;:::;J • Clean the ring gear threaded holes to remove
D the locking agent.
• When installing the ring gear, apply LOCTITE
271 or equivalent to all the threaded area and
half of the unthreaded area of the bolt.
1. Bolt
• Tighten the bolts in diagonal sequence as
illustrated (Fig. 48-66).
l~l Torque N·m (lb·ft) I 108 (80)
NOTE:
Discard used bolts and install new ones.
Fig. 48-66

REAR AXLE 48-35
SPECIAL TOOLS
ILLUSTRATION TOOL NO.
TOOL NAME ILLUSTRATION TOOL NO.
TOOL NAME
~
J-39210
Installer: Axle shaft inner
seal @
J-37452
Remover: Pinion bearing
~
J-6627-A
Wheel pin remover @
J-37262
Installer: Outer bearing
outer race
~
J-39211
Remover: Axle shaft bearing
~
J-8092
Grip
®
J-39212
Installer: Axle shaft bearing @
J-37261
Installer: Inner bearing
outer race
~
J-39379
Installer: Outer axle seal @
J-21777-42
Pilot
~
J-37221
Pinion flange holder ~ ~
J-21777-43 -Nut & Bolt
~
J-37263
Installer: Pinion oil seal ®
J-23597-12
Pilot
~
J-37264
Differential holding fixture
(Use
with J-3289-20 base) ~
J-23597-42
Gage plate
~
J-3289-20
Holding fixture base +~~ J-8001
~I Dial indicator
a
~_j~
J-22888
Puller: Side bearing ~~
J-21777-86
Disc (2 required)
~
J-8107-4
Adapter: Side bearing plug
~
J-23597-1
Arbor

FRONT DRIVING AXLE 4C-1
SECTION 4C
FRONT DRIVING AXLE
'f CAUTION:
When fasteners are removed, always reinstall them at the same location from which they were removed.
If a fastener needs to be replaced, use the correct part number fastener for that application. If the correct
part
number fastener is not available, a fastener of equal size and strength (or stronger) may be used.
Fasteners
that are not reused, and those requiring thread locking compound, will be called out. The
correct
torque values must be used when installing fasteners that require torque. If the above conditions
are not followed, parts or system damage could result.
CONTENTS
General Description . . . . . . . . . . . . . . . . . . . . 4C-1
Diagnosis
of Front Driving Axle . . . . . . . . . . . 4C-2
Automatic Locking Free Wheel Hub . . . . . 4C-3
On-Vehicle Service ..................... 4C- 4
Pinion
Shaft Oil Seal Replacement . . . . . . 4C-4
Front Drive Shaft Joints Replacement . . . 4C-5
Front Hub Bearing Preload Check . . . . . . . 4C-5
Unit Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4C-6
Front Drive Axle Assembly . . . . . . . . . . . . 4C-6
Front Axle Drive Shaft . . . . . . . . . . . . . . . . 4C-9
Differential Assembly ................. 4C-14
Differential Cage Assembly . . . . . . . . . . . . 4C-24
Front Hub and Disc (4WD Model with
Automatic Locking Hub) . . . . . . . . . . . . 4C-28
Main Data and Specifications . . . . . . . . . . . . 4C-37
General Specifications . .

. . . . . . . . . . . . . . 4C-37
Torque Specifications ................. 4C-38
Special Tools .......................... 4C-41
GENERAL DESCRIPTION
This publication contains essential removal, instal­
lation,
adjustment and maintenance procedures.
The
front axle utilizes a central disconnect type front
axle/transfer case system. The
drive axles are completely flexible assemblies,
consisting
of inner and outer constant velocity (CV)
drive shaft joints connected by an axle shaft. For
description
of front propeller shaft and universal
joint, refer to Section 4A "PROPELLER SHAFT".

4C-2 FRONT DRIVING AXLE
DIAGNOSIS OF FRONT DRIVING AXLE
PROBLEM POSSIBLE CAUSE CORRECTION
Oil
Leak At Front 1. Worn or defective oil seal. 1. Replace the oil seal.
Axle 2. Front axle housing cracked. 2. Repair or replace.
Oil Leak At Pinion 1. Too much gear oil. 1. Correct the oil level.
Shaft 2. Oil seal worn or defective. 2. Replace the oil seal.
3. Pinion flange loose or damaged. 3. Tighten or replace.
Noises In Front Axle Broken or worn drive shaft joints and Replace
the drive shaft joints and
Drive Shaft Joint bellows (BJ and DOJ) bellows.
"Clank" When Ac-1. Loose drive shaft joint to output shaft 1. Tighten.
celerating From bolts.
"Coast" 2. Damaged inner drive shaft joint. 2. Replace.
Shudder or Vibration 1. Excessive drive shaft joint angle. 1. Repair.
During Acceleration 2. Worn or damaged drive shaft joints. 2. Replace.
3. Sticking spider assembly (inner drive 3. Lubricate or replace.
shaft joint).
4. Sticking joint assembly (outer drive 4. Lubricate or replace.
shaft joint).
Vibration At 1. Out of balance or out of round tires. 1. Balance or replace.
Highway Speeds 2. Front end out of alignment. 2. Align.
Noises in Front Axle 1. Insufficient gear oil. 1. Replenish the gear oil.
2. Wrong or poor grade gear oil. 2. Replace the gear oil.
3. Drive pinion to ring gear backlash 3. Adjust the backlash.
incorrect.
4. Worn or chipped ring gear, pinion 4. Replace the ring gear, pinion gear
gear
or side gear. or side gear.
5. Pinion shaft bearing worn. 5. Replace the pinion shaft bearing.
6. Wheel bearing worn. 6. Replace the wheel bearing.
7. Differential bearing loose or worn. 7. Tighten or replace.
Wanders and Pulls 1. Wheel bearing preload too tight. 1. Adjust the wheel bearing preload.
2. Incorrect front alignment. 2. Adjust the front alignment.
3. Steering linkage loose or worn. 3. Tighten or replace.
4. Steering gear out of adjustment. 4. Adjust or replace the steering
gear.
5. Tire worn or improperly inflated. 5. Adjust the inflation or replace.
6. Front or rear suspension parts loose 6. Tighten or replace.
or broken.
Front Wheel Shimmy 1. Wheel bearing worn or improperly 1. Adjust or replace.
adjusted.
2. Incorrect front alignment. 2. Adjust the front alignment.
3. Worn ball joint or bush. 3. Replace the ball joint or bush.
4. Steering linkage loose or worn. 4. Tighten or replace.
5. Steering gear out of adjustment. 5. Tighten or replace.
6. Tire worn or improperly inflated. 6. Replace or adjust the inflation.
7. Shock absorber worn. 7. Replace the shock absorber.
..