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.
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