Page 537 of 2100

4C±40
DRIVE SHAFT SYSTEM
5. Repeat this procedure on the remaining bearing to
remove the spider from the yoke.
Inspection
Propeller shaft for run-out Aluminum tube type.
Static run-out limit : 1.0 mm(0.04 in)
TIR full length of tubing maximum.
(TIR : Total Indicator Reading)
Propeller shaft for runout (Steel tube type).
Static runout limit : 0.13 mm(0.005 in)
TIR on the neck of the slip tube shaft (with a
boot).
0.25 mm(0.010 in)
TIR on the ends of the tubing 3 inch from the
welds.
0.38 mm(0.015 in)
TIR at the linear center of the tube.
0.38 mm(0.015 in)
TIR for the full length of tube with 30º or less of
tubing.
(TIR: Total Indicator Reading)
401RW017
Play in universal joint.
Limit: Less than 0.15 mm(0.006 in)
Spider pin should be smooth and free from fretting or
galling.
Visible signs of needle presence is normal, but wear
should not be felt.
401RW028
Preload of the universal joint.
Preload should be 0 to 49 N (0 to 11.0 lb).
Joints should rotate smoothly and freely and should
exhibit no rough or ratchety movement.
401RW019
Inspect splines of slip joint for wear.
The nylon-coated spline should be free from nicks
and dings and the underlying steel spline should not
be visible.
After cleaning the nylon coating spline, the coating
should exhibit only slight indication of wear.
Grease volume is approximately 10 grams of grease
in total. Grease should be evenly applied to both the
female and the male slip splines using a small brush.
After assembly of the slip joint, the sliding joint should
be fully worked from the full collapsed to the full
extended position.
Page 538 of 2100

4C±41 DRIVE SHAFT SYSTEM
Aluminum tube type only: Inspect the aluminum
tubing for surface scratches and dents. These
scratches may not exceed 0.2 mm (0.008 in) in depth.
401RW022
Aluminum tube type only: Visually inspect the circle
welds and fittings for any signs of cracks or signs of
deterioration. If there are any cracks that exceed 0.2
mm (0.008 in) in depth, the assembly must be
replaced.
Aluminum tube type only: Check to be sure there are
no missing balance weights. If balance weights are
missing and void has occurred in the aluminum tubing
greater than 0.2 mm (0.008 in), the assembly must be
replaced.
Universal Joint Reassembly
1. Pack the four grease cavities of the spider with a high
quality, extreme pressure N.L.G.I. Grade 2 grease.
Do not add additional grease to bearing cup
assembly.
2. Move one end of the spider to cause a trunnion to
project through the spider hole beyond the outer
machined face of the yoke lug. Place a bearing over
the trunnion diameter and align it to the spider hole.
Using an arbor press, hold the trunnion in alignment
with the spider hole and place a solid plug on the
upper bearing. Press the bearing into the spider hole
enough to install a snap ring.
401RW026
3. Install a snap ring.
NOTE: Be sure the snap rings are properly seated in the
grooves.
4. Repeat steps 2 and 3 to install the opposite bearing. If
the joint is stiff, strike the yoke ears with a soft
hammer to seat the bearing.
5. Align the setting marks and join the yokes.
Page 539 of 2100
4C±42
DRIVE SHAFT SYSTEM
Slip Joint Reassembly
401RX00001
Legend
(1) Spline Yoke and Universal Joint Assembly
(2) Clamp(3) Boot
(4) Clamp
(5) Tube and Universal Joint Assembly
1. Apply grease evenly to both the female and male
splines.
2. Apply a small amount of grease by finger to the outer
lips of the boot.
3. Slide the boot (smaller diameter side) onto the spline
yoke shaft being careful not to damage the spline
coating or boot.
4. Insert the spline yoke shaft spline into the tube
assembly being careful to maintain proper phasing.
The spider holes should be in line as originally marked
prior to disassembly.
5. Position boot onto tube and yoke shaft in its
assembled position.
6. Attach boot clamps and secure using pliers.7. Be sure clamp is properly seated and secure.
CAUTION: Only use a similar type or same as the
original type clamp. Using any other clamp may
create an imbalanced shaft or lead to grease leakage.
Page 540 of 2100
4C±43 DRIVE SHAFT SYSTEM
Main Data and Specifications
General Specifications
2WD Model4WD Model
Engine6VD16VD1
TransmissionA/TA/T
Type (See illustration)12
Length
between two spiders center)1323.0mm
(52.09in)1030.0mm
(40.55in)
Universal joint typeCardan type
Torque Specifications
401R200007
Page 541 of 2100

4C±44
DRIVE SHAFT SYSTEM
AXIOM (Vehicles Produced After Aug./1/2001)
DRIVE SHAFT SYSTEM
CONTENTS
Service Precaution 4C±44. . . . . . . . . . . . . . . . . . . . . .
General Description 4C±45. . . . . . . . . . . . . . . . . . . . .
Diagnosis 4C±45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Hub and Disc (2WD Model) 4C±46. . . . . . . . .
Disassembled View 4C±46. . . . . . . . . . . . . . . . . . . .
Disassembly 4C±46. . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection 4C±47. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reassembly 4C±48. . . . . . . . . . . . . . . . . . . . . . . . . .
Front Hub and Disc (4WD Model) 4C±49. . . . . . . . .
Disassembled View 4C±49. . . . . . . . . . . . . . . . . . . .
Disassembly 4C±49. . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection 4C±50. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reassembly 4C±51. . . . . . . . . . . . . . . . . . . . . . . . . .
Front Drive Shaft Joint 4C±52. . . . . . . . . . . . . . . . . . .
Front Drive Shaft Joints Replacement 4C±52. . . .
Front Axle Drive Shaft 4C±53. . . . . . . . . . . . . . . . . . .
Front Axle Drive Shaft and Associated
Parts 4C±53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disassembly 4C±54. . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection And Repair 4C±55. . . . . . . . . . . . . . . . . .
Bushing Replacement 4C±55. . . . . . . . . . . . . . . . . .
Reassembly 4C±55. . . . . . . . . . . . . . . . . . . . . . . . . .
Shift On The Fly System 4C±59. . . . . . . . . . . . . . . . .
Shift On The Fly System and Associated
Parts 4C±59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disassembly 4C±59. . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection And Repair 4C±61. . . . . . . . . . . . . . . . . .
Reassembly 4C±63. . . . . . . . . . . . . . . . . . . . . . . . . . Main Data and Specifications 4C±66. . . . . . . . . . .
Special Tools 4C±68. . . . . . . . . . . . . . . . . . . . . . . . . .
Propeller Shaft 4C±69. . . . . . . . . . . . . . . . . . . . . . . . . .
General Description 4C±69. . . . . . . . . . . . . . . . . . . . .
Universal Joint 4C±70. . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnosis of Propeller Shaft and Universal
Joint 4C±71. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Propeller Shaft 4C±72. . . . . . . . . . . . . . . . . . . . .
Front Propeller Shaft and Associated Parts 4C±72
Removal 4C±72. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 4C±72. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disassembly 4C±73. . . . . . . . . . . . . . . . . . . . . . . . . .
Universal Joint Disassembly 4C±74. . . . . . . . . . . .
Inspection and Repair 4C±75. . . . . . . . . . . . . . . . . .
Universal Joint Reassembly 4C±76. . . . . . . . . . . . .
Reassembly 4C±77. . . . . . . . . . . . . . . . . . . . . . . . . .
Main Data and Specifications 4C±78. . . . . . . . . . . . .
Rear Propeller Shaft 4C±79. . . . . . . . . . . . . . . . . . . . .
Rear Propeller Shaft and Associated Parts 4C±79
Removal 4C±79. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 4C±79. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Slip Joint Disassembly 4C±80. . . . . . . . . . . . . . . . .
Universal Joint Disassembly 4C±81. . . . . . . . . . . .
Inspection 4C±83. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Universal Joint Reassembly 4C±84. . . . . . . . . . . . .
Slip Joint Reassembly 4C±85. . . . . . . . . . . . . . . . . .
Main Data and Specifications 4C±86. . . . . . . . . . .
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.
Page 542 of 2100

4C±45 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
ConditionPossible causeCorrection
Oil Leak At Front AxleWorn or defective oil seal.Replace the oil seal.
Front axle housing cracked.Repair or replace.
Oil Leak At Pinion ShaftToo 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
JointBroken or worn drive shaft joints and
bellows (BJ and DOJ).Replace the drive shaft joints and
bellows.
ªClankº When Accelerating From
ªCoastºLoose 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.
AccelerationWorn 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 SpeedsOut of balance or out of round tires.Balance or replace.
Front end out of alignment.Align.
Noises in Front AxleInsufficient 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.
Hub unit bearing worn.Replace the hub unit bearing.
Differential bearing loose or worn.Tighten or replace.
Wanders and PullsIncorrect 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 ShimmyHub unit bearing worn.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.
Page 543 of 2100
4C±46
DRIVE SHAFT SYSTEM
Front Hub and Disc (2WD Model)
Disassembled View
411R200011
Legend
(1) Disc Rotor
(2) Hub unit, Bearing(3) Wheel Pin
(4) Bolt
Disassembly
1. Raise the vehicle with a jack. Support the frame with
chassis stands.
2. Remove the brake caliper from the bracket. Secure
the caliper with a wire so that it does not interfere with
the work process.
Refer to
Front disc caliper assembly in Section 5C of this
Manual.
3. Remove the disk rotor
Apply penetrating oil to the bearing and disc rotor contact
surfaces if the surfaces are stuck together because of
rust.
4. Inspect the hub unit bearing. Refer to
Inspection
below.
5. Use a dial gauge to measure the bearing axial rattle.
Bearing axial rattle: 0.05 mm max
411R200002
Page 544 of 2100

4C±47 DRIVE SHAFT SYSTEM
If abnormal conditions are discovered during
inspection, go to Step 6. If there are no abnormal
conditions, reassemble the front disc rotor and
caliper.
NOTE: Hub, wheel bearing and spindle is integrated to
the hub unit bearing so it must not be disassembled. If it
has abnormal rattle or noise, replace the hub unit bearing.
6. Remove the ABS sensor connector.
411R200004
Legend
(1) ABS Sensor Connector
(2) Bolt
7. Remove the 4 bolts fixing the hub unit bearing to the
knuckle.
Apply penetrating oil to the bearing and knuckle contact
surfaces if the surfaces are stuck together because of
rust.
8. Temporarily install long bolts to 2 of the fixing bolt
holes (the bolts must have the same diameter and
thread width).
9. Strike the long bolts with a hammer to loosen and
remove the hub unit bearing from the knuckle.
Take care not to drop the bearing.10. If necessary, replace the wheel pin in the following
manner.
Place hub on a suitable work surface and remove
wheel studs, as required, using a hammer.
411RS004
Inspection
Inspect the parts listed below for abrasion, breakage, and
other abnormal conditions.
Repair, or replace the parts as required.
Disc
Caliper
Wheel pin
Hub unit bearing