Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Service manual — part 125
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–118
Chart 7
The transfer does not change to low from high.
Function of circuit
—
Fail condition
When the TOD switch is selected to the 4L position, the transfer does not change to the
low position. (The transfer stays neutral and the vehicle does not run.)
Step
Action
Yes
No
1
1. Turn on the starter switch.
2. Set the TOD switch to the any position.
Is the transfer changed to high or low?
Go to
Step 2
Go to
Step 3
2
Is the transfer changed to high from low and the low from high?
The phenomenon
is not
reproduced.
Refer to
“Trouble
intermittently
observed”.
Go to
Step 3
3
Is any of the trouble codes 41 (P1741), 42 (P1773), 43 (P1743),
and 55 (P1755) recorded?
Examine the
trouble based on
“Diagnosis from
Trouble Codes”.
The transfer is
abnormal. Repair
the transfer.
Go to
Step 4
4
Check that all the parts are mounted.
Is this step complete?
Verify the repair.
Go to
Step 4
4C–1
DRIVE SHAFT SYSTEM
AXIOM (Vehicles Produced Before July/31/2001)
DRIVELINE/AXLE
DRIVE SHAFT SYSTEM
CONTENTS
Service Precaution
4C–1
. . . . . . . . . . . . . . . . . . . . . .
General Description
4C–2
. . . . . . . . . . . . . . . . . . . . .
Diagnosis
4C–2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Hub and Disc (2WD Model)
4C–3
. . . . . . . . .
Disassembled View
4C–3
. . . . . . . . . . . . . . . . . . . .
Disassembly
4C–3
. . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair
4C–4
. . . . . . . . . . . . . . . . . .
Reassembly
4C–5
. . . . . . . . . . . . . . . . . . . . . . . . . .
Front Hub and Disc (4WD Model)
4C–8
. . . . . . . . .
Disassembled View
4C–8
. . . . . . . . . . . . . . . . . . . .
Disassembly
4C–8
. . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair
4C–10
. . . . . . . . . . . . . . . . . .
Reassembly
4C–10
. . . . . . . . . . . . . . . . . . . . . . . . . .
Front Drive Shaft Joint
4C–13
. . . . . . . . . . . . . . . . . . .
Front Drive Shaft Joints Replacement
4C–13
. . . .
Front Axle Drive Shaft
4C–14
. . . . . . . . . . . . . . . . . . .
Front Axle Drive Shaft and Associated
Parts
4C–14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disassembly
4C–15
. . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection And Repair
4C–16
. . . . . . . . . . . . . . . . . .
Bushing Replacement
4C–16
. . . . . . . . . . . . . . . . . .
Reassembly
4C–17
. . . . . . . . . . . . . . . . . . . . . . . . . .
Shift On The Fly System
4C–19
. . . . . . . . . . . . . . . . .
Shift On The Fly System and Associated
Parts
4C–19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disassembly
4C–20
. . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection And Repair
4C–21
. . . . . . . . . . . . . . . . . .
Reassembly
4C–23
. . . . . . . . . . . . . . . . . . . . . . . . . .
Main Data and Specifications
4C–26
. . . . . . . . . . .
Special Tools
4C–28
. . . . . . . . . . . . . . . . . . . . . . . . . .
Propeller Shaft
4C–29
. . . . . . . . . . . . . . . . . . . . . . . . . .
General Description
4C–29
. . . . . . . . . . . . . . . . . . . .
Front Propeller Shaft
4C–30
. . . . . . . . . . . . . . . . . . . . .
General Description
4C–30
. . . . . . . . . . . . . . . . . . . .
Front Propeller Shaft and Associated Parts
4C–31
Removal
4C–31
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation
4C–32
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Data and Specifications
4C–35
. . . . . . . . . . .
Rear Propeller Shaft
4C–36
. . . . . . . . . . . . . . . . . . . . .
Rear Propeller Shaft and Associated Parts
4C–36
Removal
4C–36
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation
4C–36
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Slip Joint Disassembly
4C–37
. . . . . . . . . . . . . . . . .
Universal Joint Disassembly
4C–38
. . . . . . . . . . . .
Inspection
4C–40
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Universal Joint Reassembly
4C–41
. . . . . . . . . . . . .
Slip Joint Reassembly
4C–42
. . . . . . . . . . . . . . . . . .
Main Data and Specifications
4C–43
. . . . . . . . . . .
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.
4C–2
DRIVE SHAFT SYSTEM
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.
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 unit loose or worn.
Tighten or replace.
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 unit loose or worn.
Tighten or replace.
Tire worn or improperly inflated.
Replace or adjust the inflation.
Shock absorber worn.
Replace the shock absorber.
4C–3
DRIVE SHAFT SYSTEM
Front Hub and Disc (2WD Model)
Disassembled View
411RX001
Legend
(1) Bolt
(2) Cover and Gasket
(3) Lock Washer and Lock Screw
(4) Hub Nut
(5) Outer Bearing
(6) Hub and Disc Assembly
(7) ABS Sensor Ring
(8) Inner Bearing
(9) Oil Seal
(10) Bolt
(11) Wheel Pin
Disassembly
1. Before disassembly, jack up the front of vehicle and
support frame with jack stands.
2. Remove the two bolts from the rear side of the
knuckle arm, then remove the brake caliper, with the
brake hose attached.
Use a wire to attach the brake caliper to the upper link.
Refer to
Disk Brakes in Brake section.
3. Remove cover bolt.
4. Remove cover and gasket.
5. Remove lock washer and Lock screw.
6. Remove hub nut, using front hub nut wrench
J–36827.
901RW054
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