wheel alignment ISUZU TFS SERIES 1997 Workshop Manual

FRONT WHEEL DRIVE 4C1-21
18.Ball
Bring the ball guide of the cage into alignment with the
projected portion of the ring on the ball retainer, then turn the
cage ½ pitch. Align the track on the ball retainer with the
window in the cage and install the six balls into position.
19.BJ Shaft Assembly
Apply specified grease to the half of the space of the DOJ case
(Approx. 50g (1.8 oz)).
20.Circlip
Install the circlip so that open ends are positioned away from
the ball groove.
21.Bellows
(1) Before installation, insert the appropriate amount of
specified grease into the DOJ case.
(2) Adjust the air pressure within the bellows by inserting a
screwdriver or equivalent, so that it equals atmospheric
pressure.
22.Band
After installation, check that the bellows is free from distortion.

4C1-30 FRONT WHEEL DRIVE
5. Cross Pin
(1) Be sure to install the cross pin so that it is in alignment with
the lock pin hole in the differential cage.
(2) Adjust the backlash between the side gear and the pinion
gear.
mm(in)
Backlash 0.03 - 0.08 (0.001 - 0.003)
Thickness of thrust washers available
mm(in)
167 mm 1.05, 1.15, 1.25 (0.041, 0.043, 0.049)
194 mm 1.00, 1.05, 1.10 (0.039, 0.041, 0.043)
6. Lock Pin
After lock pin installation, stake the cage to prevent discharge
of the lock pin.
7. Ring Gear
When installing the ring gear, apply LOCTITE 271 or equivalent
to the threaded hole and bolt.
8. Bolt
Tighten the bolts in diagonal sequence as illustrated.
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)
Note :
Discard used bolts and install new ones.
For 167 mm
Note that all bolts have a left hand thread.

FRONT WHEEL DRIVE 4C1-53
Preload Adjustment
Tighten the hub nut at 29.4 Nm (3 kgfm / 21.716 lb.ft), then
loosen the nut to the full.
Tighten the hub nut at the value given below, using a spring
scale on the wheel pin.
Bearing Preload kg(lb)
New bearing and New oil seal 2 -2.5 (4.4 - 5.5)
Used bearing and New oil seal 1.2 - 1.8 (2.68 - 4.0)
If the measured bearing preload is outside the specifications,
adjust it by loosening or tightening the bearing nut.
6. Lock Washer
Turn the side with larger diameter of the tapered bore to the
vehicle outer side, and attach the washer.
If the bolt holes in the lock plate are not aligned with the
corresponding holes in the nut, reverse the lock plate.
If the bolt holes are still out of alignment, turn in the nut just
enough to obtain alignment,. Screw is to be fastened tightly so
its head may come lower than the surface of the washer.
8. Snap ring, shims
Adjust the clearance between the collar and the snap ring.
Clearance mm(in)
0 - 0.3 (0 - 0.01)
Adjust shims available
mm(in)
0.2, 0.3, 0.5, 1.0
(0.008, 0.011, 0.020, 0.039)
10.bolt
Torque N
m (kgfm/lbft)
10 - 14 (1.0 - 1.4 / 7 - 10)

FRONT WHEEL DRIVE 4C1-61
6. Hub and Disc Assembly
(1) Apply grease in the hub.
(2) Apply Besco L-2 or equivalent to the outer and inner
bearing.
g(oz)
Hub 35 (1.23)
Outer bearing 10 (0.35)
Inner bearing 15 (0.53)
7. Hub Nut
Turn the place where there is a chamfer in the tapped hole to
the outer side, and attach the nut.
Wrench : 5-8840-2117-0
(J-36827)
Preload Adjustment
Tighten the hub nut at 29.4 N
m (3 kgfm / 21.716 lbft), then
loosen the nut to the full.
Tighten the hub nut at the value given below, using a spring
scale on the wheel pin.
Bearing Preload kg(lb)
New bearing and New oil seal 2 -2.5 (4.4 - 5.5)
Used bearing and New oil seal 1.2 - 1.8 (2.6 - 4.0)
If the measured bearing preload is outside the specifications,
adjust it by loosening or tightening the bearing nut.
8. Lock Washer
Turn the side with larger diameter of the tapered bore to the
vehicle outer side, and attach the washer.
If the bolt holes in the lock plate are not aligned with the
corresponding holes in the nut, reverse the lock plate.
If the bolt holes are still out of alignment, turn in the nut just
enough to obtain alignment,. Screw is to be fastened tightly so
its head may come lower than the surface of the washer.

4C1-72 FRONT WHEEL DRIVE
Preload Adjustment
Tighten the hub nut at 29.4 Nm (3 kgfm / 21.716 lbft), then
loosen the nut to the full.
Tighten the hub nut at the value given below, using a spring
scale on the wheel pin.
Bearing Preload kg(lb)
New bearing and New oil seal 2 -2.5 (4.4 - 5.5)
Used bearing and New oil seal 1.2 - 1.8 (2.6 - 4.0)
If the measured bearing preload is outside the specifications,
adjust it by loosening or tightening the bearing nut.
19.Lock Washer
Turn the side with larger diameter of the tapered bore to the
vehicle outer side, and attach the washer.
If the bolt holes in the lock plate are not aligned with the
corresponding holes in the nut, reverse the lock plate.
If the bolt holes are still out of alignment, turn in the nut just
enough to obtain alignment,. Screw is to be fastened tightly so
its head may come lower than the surface of the washer.
20.Body Assembly
Apply adhesive (Loctite 15 or equivalent) to the both joining
faces.
21.Snap Ring and Shims
Adjust the clearance between the free wheeling hub body and
the snap ring.
Clearance mm(in)
0 - 0.3 (0 - 0.01)
Adjust Shims Available mm(in)
0.2, 0.3, 0.5, 1.0
(0.008, 0.011, 0.020, 0.039)
22.Cover Assembly
Align stopper nails to grooves of body.

4C1-76 FRONT WHEEL DRIVE
DISASSEMBLY
Disassembly Steps
1. Snap Ring
2. Needle Roller Bearing
3. Spider4. Flange Yoke
5. Grease Fitting
Important Operation
2. Needle Roller Bearing
(1) Apply alignment marks (1) on the yokes of the universal
joint, then remove snap ring.
(2) Tap out the needle roller bearing by gently striking the
shoulder of the yoke, using a mallet or a copper hammer.

FRONT WHEEL DRIVE 4C1-81
42 Model
1. WANDERS AND PULLS
Checkpoint Trouble Cause Countermeasure
Adjust the wheel bearing
preloadToo tight NG
SuspensionTighten or replace
Replace or adjust the inflation
Adjust the steering gear out of
adjustment or replace
Adjust the front alignment
Front or rear suspension parts
loose or broken
TireW orn or improperly inflated
Incorrect or broken
Front alignmentIncorrect
Steering linkage
Steering gear out of
adjustment
Tighten or replaceLoose or worn
OK
NG NG NG NG NG
OK OK
OK
OK
W heel bearing preload

4C1-82 FRONT WHEEL DRIVE
2. FRONT WHEEL SHIMMY
Checkpoint Trouble Cause Countermeasure
Ball joint or bush
Shimmy damper
Replace the ball joint or bush
Replace the shimmy damper
Worn
Worn
Front alignmentAdjust the front alignment
Adjust or replace
Incorrect
W orn or improperly adjusted
OK
OKNG NG NG NG
OK OKW heel bearing
Shock absorber
Steering gear out of
adjustment
Replace the shock absorber
Tighten or replace
Worn
Incorrect or broken
TireReplace or adjust the inflation
Tighten or replace
W orn or improperly inflated
Loose or worn
OK
NG NG NG NO
OK OKSteering linkage

FRONT WHEEL DRIVE 4C1-85
5. WANDERS AND PULLS
Checkpoint Trouble Cause Countermeasure
Adjust the wheel bearing
preloadToo tight NG
Tighten or replace
Replace or adjust the inflation
Adjust the steering gear out of
adjustment or replace
Adjust the front alignment
SuspensionFront or rear suspension parts
loose or broken
TabW orn or improperly inflated
Incorrect or broken
Front alignmentIncorrect
Steering gear out of
adjustment
Tighten or replaceSteering linkageLoose or worn
NG NG NG NG NG
OK OK OK
OK
OK
W heel bearing preload

4C1-86 FRONT WHEEL DRIVE
6. FRONT WHEEL SHIMMY
Checkpoint Trouble Cause Countermeasure
Ball joint or bush
Shimmy damper
Replace the ball joint or bush
Replace the shimmy damper
Worn
Worn
Front alignmentAdjust the front alignment
Adjust or replace
Incorrect
W orn or improperly adjusted
OK
OKNG NG NG NG
OK OKW heel bearing
Shock absorber
Steering gear out of
adjustment
Replace the shock absorber
Tighten or replace
Worn
Incorrect or broken
TireReplace or adjust the inflation
Tighten or replace
W orn or improperly inflated
Loose or worn
OK
NG NG NG NO
OK OKSteering linkage