1997 ISUZU TFS SERIES oil

4C1-22 FRONT WHEEL DRIVE
DIFFERENTIAL
DISASSEMBLY
MAJOR COMPONENTS
Disassembly Steps
1. Bolt
2. Differential assembly
3. Axle case
4. Bolt
5. Bearing cap
6. Diff. cage assembly
7. Side bearing outer race
8. Side bearing
9. Adjust shims
10. Flange nut
11. Flange12. Dust cover
13. Pinion gear
14. Inner bearing
15. Adjust shim
16. Collapsible spacer
17. Inner bearing outer race
18. Oil seal
19. Outer bearing
20. Outer bearing outer race
21. Diff. carrier

FRONT WHEEL DRIVE 4C1-27
INSPECTION AND REPAIR
Make all necessary adjustments, repairs, and part replacements if wear, damage, or other problems are discovered
during inspection.
Ring gear, pinion gear
Bearing
Side gear, pinion gear, cross pin
Differential cage, carrier
Thrust washer
Oil seal
Visual Check
Inspect the following parts for wear, damage, or other
abnormal conditions.
Ring Gear Replacement
(1) The ring gear should always be replaced with the drive
pinion as a set.
(2) W hen installing the ring gear, apply LOCTITE 271 or
equivalent to the threaded hole and bolt.
(3) Tighten the fixing bolts in a diagonal sequence as
illustrated.
(4) Discard used bolts and install new ones.
Bolt Torque N
m (kgfm/lbft)
167 mm 78.5
9.8 (8 1/57.9 7.2)
194 mm 107.9 9.8 (11 1/79.6 7.2)
For 167 mm
Note that all bolts have a left hand thread.
Clearance Between the Differential Pinion
and the Cross Pin
mm(in)
Standard Limit
167 mm 0.06 - 0.12 (0.002 - 0.005) 0.2 (0.008)
194 mm 0.05 - 0.10 (0.002 - 0.004) 0.2 (0.008)

FRONT WHEEL DRIVE 4C1-31
MAJOR COMPONENTS
Reassembly Steps
1. Diff. carrier
2. Outer bearing outer race
3. Inner bearing outer race
4. Adjust shim
5. Inner bearing
6. Collapsible spacer
7. Pinion gear
8. Outer bearing
9. Oil seal
10. Dust cover11. Flange
12. Flange nut and washer
13. Adjust shim
14. Side bearing
15. Bearing outer race
16. Diff. cage assembly
17. Bearing cap
18. Bolt
19. Axle case
20. Differential assembly
21. Bolt

4C1-32 FRONT WHEEL DRIVE
Important Operations
2. Outer Bearing Outer Race
Installer : 5-8522-0048-0 (167 mm)
(J-29038)
9-8522-1141-0 (194 mm)
(J-24256)
Grip : 5-8840-0007-0
(J-8092)
3. Inner Bearing Outer Race
Installer : 5-8522-0049-0 (167 mm)
(J-29039)
9-8522-1274-0 (194 mm)
Grip : 5-8840-0007-0
(J-8092)
4. Adjust Shim
Adjustment of drive pinion mounting distance
(1) Apply gear oil to the inner and outer drive pinion bearing.
Clean the pinion setting gage set.
Then install the gage set together with the inner and outer
bearings.
For 167 mm
1Pilot : 5-8840-2092-0
(J-23597-28)
2Nut and bolt : 5-8840-0127-0
(J-21777-43)
3Rear pilot : 5-8840-02091-0
(J-23597-27)
4Gage plate : 5-8840-2090-0
(J-23597-26)
For 194 mm
1Pilot : 5-8840-2085-0
(J-21777-42)
2Nut and bolt : 5-8840-2089-0
(J-23597-9)
4Gage plate : 5-8840-2087-0
(J-23597-7)

4C1-36 FRONT WHEEL DRIVE
5. Inner Bearing
Place the shim on the drive pinion, with the chamfered side
turned towards the pinion head then install the inner bearing on
to the pinion using an installer and a press.
Installer : 9-8522-1165-0 (J-6133-01)
Note:
Do not apply pressure to the roller cage.
Apply pressure only to the inner race.
6. Collapsible Spacer
Discard the used collapsible spacer and install a new one.
9. Oil Seal
Use oil seal installer to install a new oil seal that has been
soaked in rear axle lubricant.
Installer : 5-8522-0046-0 (J-26234) (For 167 mm)
9-8522-1275-0 (J-24250) (For 194 mm)
Note :
Take care not to use a rear differential oil seal instead of
the front differential oil seal.
12.Flange Nut and Washer
For 194 mm
(1) Apply lubricant to the pinion threads.
(2) Tighten the nut to the specified torque using the pinion
flange holder.
Pinion flange holder : 5-8840-0133-0
(J-8614-01)
Torque N
m (kgfm/lbft)
176.6 - 274.7 (18 - 28/130 - 202)
Discard used flange nut and install new one.

FRONT WHEEL DRIVE 4C1-41
FRONT HUB AND DISC (42 model)
DISASSEMBLY
Refer to SECTION 3E “WHEEL AND TIRE” for wheel removal procedure.
Disassembly Steps
1. Bolt
2. Brake caliper
3. Hub cap
4. Split pin
5. Nut retainer
6. Hub nut
7. Lock washer8. Outer bearing
9. Hub and disc assembly
10. Oil seal
11. Inner bearing and outer race
12. Bolt
13. Wheel pin

4C1-42 FRONT WHEEL DRIVE
Important Operations
Before removal, jack up the front of vehicle and support frame
with jack stands.
2. Brake Caliper
(1) Remove the two bolts from the rear side of the knuckle arm,
then remove the brake caliper, with the brake hose
attached.
(2) Use a wire etc., for attaching the brake caliper to the upper
link.
3. Hub Cap
When removing hub cap, exercise care so as not to scratch or
distort hub fitting face.
9. Hub and Disc Assembly
Using a brass bar to remove the outer bearing outer race (1),
oil seal, inner bearing and inner bearing outer race (2) from the
hug.
If necessary, replace the wheel pin in the following manner.
12.Bolt
13.Wheel Pin ; Front Hub
(1) Scribe mark on hub to disc before disassembly to insure
proper assembly.

4C1-44 FRONT WHEEL DRIVE
INSPECTION AND REPAIR
Make necessary correction or parts replacement if wear, damage or any other abnormal conditions are found
through inspection.
Hub
Hub bearing
Bearing outer race
Disc
Oil seal
Visual Check
Check the following parts for wear, damage or other abnormal
conditions.