Isuzu Trooper (2000 year). Manual - part 118

4B2–92 DRIVE LINE CONTROL SYSTEM (TOD)

Step

Action

Yes

No

1 

Are the brake and ABS systems healthy?

Go to Step 2

Repair the 

brake and ABS. 

 Go to Step 4

2 

Turn on the starter switch.
Is the battery voltage observed between terminals 14 and 22?

Go to Step 3

Repair the 

battery system.

 Go to Step 4

3 

1. Select the 4WD SW to the 2WD position.

2. The voltage between terminals 36 and 46 range between 7.5

and 16V (0.12 seconds make a cycle)

Does the voltage within the range specified?

Examine the 

trouble based 

on “Diagnosis 

from Trouble 

Codes".

 Go to Step 4

The ECU has 

failed. Replace 

the ECU.

 Go to Step 4

4 

Check that all the parts are mounted.
Is this step complete?

Repeat the 

“Diagnosis Flow".

Return to Step 4

4C–1

DRIVE SHAFT SYSTEM

TROOPER

DRIVELINE/AXLE

DRIVE SHAFT SYSTEM

CONTENTS

Service Precaution

4C–2

. . . . . . . . . . . . . . . . . . . . . . 

General Description

4C–2

. . . . . . . . . . . . . . . . . . . . . 

Diagnosis

4C–3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Front Hub and Disc (2WD Model)

4C–4

. . . . . . . . . 

Disassembled View

4C–4

. . . . . . . . . . . . . . . . . . . . 

Disassembly

4C–4

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Inspection and Repair

4C–6

. . . . . . . . . . . . . . . . . . 

Reassembly

4C–6

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Main Data and Specifications

4C–9

. . . . . . . . . . . 

Special Tools

4C–10

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Front Hub and Disc (4WD Model)

4C–11

. . . . . . . . . 

Disassembled View

4C–11

. . . . . . . . . . . . . . . . . . . . 

Disassembly

4C–11

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Inspection and Repair

4C–12

. . . . . . . . . . . . . . . . . . 

Reassembly

4C–12

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Main Data and Specifications

4C–16

. . . . . . . . . . . 

Special Tools

4C–17

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Front Drive Shaft Joint

4C–18

. . . . . . . . . . . . . . . . . . . 

Front Drive Shaft Joints Replacement

4C–18

. . . . 

Front Axle Drive Shaft

4C–19

. . . . . . . . . . . . . . . . . . . 

Front Axle Drive Shaft and Associated
 Parts

4C–19

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Disassembly

4C–20

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Inspection and Repair

4C–21

. . . . . . . . . . . . . . . . . . 

Bushing Replacement

4C–21

. . . . . . . . . . . . . . . . . . 

Reassembly

4C–22

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Shift On The Fly System

4C–24

. . . . . . . . . . . . . . . . . 

Shift On The Fly System and Associated
 Parts

4C–24

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Disassembly

4C–24

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Inspection and Repair

4C–26

. . . . . . . . . . . . . . . . . . 

Main Data and Specifications

4C–31

. . . . . . . . . . . 

Special Tools

4C–32

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Front Propeller Shaft

4C–33

. . . . . . . . . . . . . . . . . . . . . 

General Description

4C–33

. . . . . . . . . . . . . . . . . . . . 

Front Propeller Shaft and Associated Parts

4C–34

Removal

4C–34

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Installation

4C–35

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Disassembly (Except TOD 4

×

4)

4C–36

. . . . . . . . . 

Universal Joint Disassembly

4C–37

. . . . . . . . . . . . 

Inspection and Repair

4C–38

. . . . . . . . . . . . . . . . . . 

Universal Joint Reassembly

4C–41

. . . . . . . . . . . . . 

Reassembly (Except TOD 4

×

4)

4C–42

. . . . . . . . . . 

Main Data and Specifications

4C–43

. . . . . . . . . . . 

Rear Propeller Shaft

4C–44

. . . . . . . . . . . . . . . . . . . . . 

General Description

4C–44

. . . . . . . . . . . . . . . . . . . . 

Rear Propeller Shaft and Associated Parts

4C–44

Removal

4C–44

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Installation

4C–45

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Disassembly

4C–46

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Universal Joint Disassembly

4C–47

. . . . . . . . . . . . 

Inspection and Repair

4C–48

. . . . . . . . . . . . . . . . . . 

Universal Joint Reassembly

4C–49

. . . . . . . . . . . . . 

Reassembly

4C–50

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Main Data and Specifications

4C–51

. . . . . . . . . . . 

4C–2

DRIVE SHAFT SYSTEM

Service Precaution

WARNING: THIS VEHICLE HAS A SUPPLEMENTAL
RESTRAINT SYSTEM(SRS). REFER TO THE SRS
COMPONENT AND WIRING LOCATION VIEW IN
ORDER TO DETERMINE WHETHER YOU ARE
PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING. WHEN YOU
ARE PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING, REFER TO
THE SRS SERVICE INFORMATION. FAILURE TO
FOLLOW WARNINGS COULD RESULT IN POSSIBLE
AIR BAG DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS. 

CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED , do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.

General Description

This publication contains essential removal, installation,
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 Front Propeller Shaft in this section.

4C–3

DRIVE SHAFT SYSTEM

Diagnosis

Condition

Possible cause

Correction

Oil Leak At Front Axle

Worn or defective oil seal.

Replace the oil seal.

Front axle housing cracked.

Repair or replace.

Oil Leak At Pinion Shaft

Too much gear oil.

Correct the oil level.

Oil seal worn or defective.

Replace the oil seal.

Pinion flange loose or damaged.

Tighten or replace.

Noises In Front Axle Drive Shaft
Joint

Broken or worn drive shaft joints and
bellows (BJ and DOJ).

Replace the drive shaft joints and
bellows.

“Clank” When Accelerating From
“Coast”

Loose drive shaft joint to output shaft
bolts.

Tighten.

Damaged inner drive shaft joint.

Replace.

Shudder or Vibration During
Acceleration

Excessive drive shaft joint angle.

Repair.

Acceleration

Worn or damaged drive shaft joints.

Replace.

Sticking spider assembly (inner drive
shaft joint).

Lubricate or replace.

Sticking joint assembly (outer drive
shaft joint).

Lubricate or replace.

Vibration At Highway Speeds

Out of balance or out of round tires.

Balance or replace.

Front end out of alignment.

Align.

Noises in Front Axle

Insufficient gear oil.

Replenish the gear oil.

Wrong or poor grade gear oil.

Replace the gear oil.

Drive pinion to ring gear backlash
incorrect.

Adjust the backlash.

Worn or chipped ring gear, pinion
gear or side gear.

Replace the ring gear, pinion gear or
side gear.

Pinion shaft bearing worn.

Replace the pinion shaft bearing.

Wheel bearing worn.

Replace the wheel bearing.

Differential bearing loose or worn.

Tighten or replace.

Wanders and Pulls

Wheel bearing preload too tight.

Adjust the wheel bearing preload.

Incorrect front alignment.

Adjust the front alignment.

Steering linkage loose or worn.

Tighten or replace.

Steering gear out of adjustment.

Adjust or replace the steering gear.

Tire worn or improperly inflated.

Adjust the inflation or replace.

Front or rear suspension parts loose
or broken.

Tighten or replace.

Front Wheel Shimmy

Wheel bearing worn or improperly
adjusted.

Adjust or replace.

Incorrect front alignment.

Adjust the front alignment.

Worn ball joint or bush.

Replace the ball joint or bush.

Steering linkage loose or worn.

Tighten or replace.

Steering gear out of adjustment.

Tighten or replace.

Tire worn or improperly inflated.

Replace or adjust the inflation.

Shock absorber worn.

Replace the shock absorber.