ISUZU TFS SERIES 1997 Workshop Manual

4C1-38 FRONT WHEEL DRIVE
(2) Insert the differential cage assembly with bearing outer
races into the side bearing bores of the carrier.
(3) Using two sets of feeler gauges, insert a feeler stock of
sufficient thickness between each bearing outer race and
the carrier to remove all end plat. Make certain the feeler
stock is pushed to the bottom of the bearing bores.
Mount the dial indicator on the carrier so that the indicator
stem is at right angles to a tooth on the ring gear.
Dial indicator : 5884-0126-0
(J-8001)
(4) Adjust feeler gauge thickness from side to side until ring
gear backlash is in the specified range.
Backlash mm(in)
0.13 - 0.18 (0.005 - 0.007)
W ith zero end play and correct backlash established,
remove the feeler gauge packs, determine the thickness of
the shims required and add 0.05 mm (0.002 in) to each
shim pack to provide side bearing preload. Always use new
shims.
(5) Remove side bearing
Remover : 5-8840-0013-0
(J-22888)
Pilot : 5-8521-0019-0 (167 mm)
9-8521-1743-0 (194 mm)
(J-8107-2)
14.Side Bearing
Install the side bearings together with the selected shims.
For 167 mm
1Installer : 5-8840-0138-0 (J-29036)
2Drive handle : 5-8840-0007-0 (J-8092)
3Pilot : 5-8521-0019-0
For 194 mm
1Installer : 9-8521-1164-0 (J-24244)
2Drive handle : 5-8840-0007-0 (J-8092)
3Pilot : 9-8521-1743-0 (J-8107-2)

FRONT WHEEL DRIVE 4C1-39
17.Bearing Cap
Align the setting marks applied at disassembly.
18.Bolt
Bolt Torque N
m (kgfm/lbft)
167 mm 68.7
9.8 (7.0 1.0/50.6 7.2)
194 mm 98.1 9.8 (10.0 1.0/72.3 7.2)
Measure the amount of run-out of the ring gear at its rear face.
mm(in)
Standard Limit
0.02 (0.001) 0.05 (0.002)
Gear Tooth Contact Pattern Check and Adjustment
Apply a thin coat of prussian blue or equivalent to the faces of
the 7 - 8 teeth of the ring gear. Check the impression of
contact on the ring gear teeth and make necessary adjustment
as described below if the contact is abnormal.

4C1-40 FRONT WHEEL DRIVE
20.Differential Assembly
(1) Clean the faces of the front axle case and differential
carrier.
Apply the recommended liquid gasket or its equivalent to
the sealing side of the axle case and the carrier.
(2) Attach the differential case and the carrier assembly to the
front axle case and tighten the nuts and bolts. The axle
case bolt is used for drainage.
Torque N
m (kgfm/lbft)
25.5
5 (2.6 0.5/18.8 3.6)
(3) Install the axle shaft assemblies as instructed earlier in this
section under “Axle Shaft Replacement”.
(4) Fill the axle case with hypoid gear lubricant, to just below
the filler hole.
Lubricant capacity liter (US/UK gal)
167 mm 1.0 (0.26/0.22)
194 mm 1.4 (0.37/0.31)

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.

FRONT WHEEL DRIVE 4C1-43
(2) Clamp hub and disc assembly in vise using protective pads
and remove six (6) disc to hub retaining bolts.
(3) Place hub on a suitable work surface and remove wheel
studs, as required, using a hammer.

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.

FRONT WHEEL DRIVE 4C1-45
REASSEMBLY
Refer to SECTION 3E “WHEEL AND TIRE” for wheel removal procedure.
Reassembly Steps
1. Wheel pin
2. Bolt
3. Inner bearing and outer race
4. Oil seal
5. Hub and disc assembly
6. Outer bearing
7. Lock washer
8. Hub nut
9. Nut retainer
10. Split pin
11. Hub cap
12. Brake caliper
13. Bolt

4C1-46 FRONT WHEEL DRIVE
Important Operations
1. Wheel Pin
(1) Place hub on a wood workbench or a block of wood,
approx. 6” by 6” to protect the wheel stud ends and threads.
(2) Install wheel stud using a hammer.
Be sure wheel stud is started squarely and seats
completely.
(3) Align index marks and install hub to disc.
2. Bolt
Torque N
m (kgfm/lbft)
103
5 (10.5 1/75.9 7.2)
3. Inner Bearing and Outer Race
4. Oil Seal
Outer Bearing Outer Race
(1) Install the bearing outer race by driving into the hub.
Installer (Outer) : 5-8822-0053-0 (J-29016)
Installer (Inner) : 5-8822-0054-0 (J-29015)
Drive handle : 5-8840-0007-0 (J-8092)
(2) Install the outer and inner bearing into the hub with fingers.

FRONT WHEEL DRIVE 4C1-47
(3) Install oil seal using special tools.
Installer : 5-8522-0051-0
(J-33161)
Grip : 5-8840-0007-0
(J-8092)
5. Hub and Disc Assembly
11. Hub Cap
Apply grease in the hub and hub cap.
Description Amount g(oz)
Hub 50 (1.76)
Hub cap 20 (0.70)
Outer bearing 6.5 (0.23)
Inner bearing 12 (0.42)
8. Hub nut
Adjustment of front wheel hub bearing preload
1. Tighten spindle nut to 3.0 kg
m (21.7 lb.ft/29.4 Nm) torque.
2. Turn the hub 2-3 turns and loosen the nut just enough so
that it can be turned with the fingers.
3. Turn the nut all the way in with the fingers and check to be
sure the hub has no free play.
4. Measure the bearing preload by pulling one of the wheel hub
studs with a spring scale.
5. Tighten the spindle nut until specified bearing preload Is
obtained.
After reassembling, install the disc brake caliper assembly.
Bearing Preload kg(lb)
New bearing and New oil seal 0.8 - 1.0(1.8 - 2.2)
Reuse bearing and New oil seal 0.8 - 1.0 (1.8 - 2.2)
13.Bolt
Torque N
m (kgfm/lbft)
155
15.7 (15.8 1.6/114.3 11.6)