1997 ISUZU TFS SERIES torque

FRONT WHEEL DRIVE 4C1-37
(3) Pinion bearing preload
(a) Measure the bearing preload by using a torque meter. Note
the scale reading required to rotate the flange.
(b) continue tightening until the specified starting torque is
obtained.
Starting Torque N
m (kgfcm/lbin)
0.63 - 1.13 (6.5 - 11.5/5.7 - 9.9)
For 167 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)
117 - 127 (12 - 13/87 - 94)
Discard used flange nut and install new one.
(3) Continue tightening until the specified starting torque is
obtained.
Starting Torque N
m (kgfcm/lbin)
0.59 - 1.0 (6 - 11/5.2 - 9.5)
13.Adjust Shim
(1) Attach the side bearing to the differential assembly without
shims. Support the opposite side using a pilot to prevent
bearing damage.
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)

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)

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)

4C1-60 FRONT WHEEL DRIVE
Important Operations
1. Wheel Pin
(1) Place the hub on a wood workbench or a block of wood
approx. 6” by 6” to protect the wheel stud ends and threads.
(2) Insert a wheel stud using a hammer.
Be sure the wheel stud is started squarely and seats
completely.
2. Bolt
Align scribe marks and attach the hub to the disc.
Torque N
m (kgfm/lbft)
103
5 (10.5 1/75.9 7.2)
3. Inner Bearing and Outer Race
Outer race ; inner bearing
Install the outer race by driving it into the hub.
Installer : 5-880-2119-0
(J-36829)
Grip : 5-8840-0007-0
(J-8092)
4. Outer Bearing and Outer Race
Outer race ; outer bearing
Install the outer race by driving it into the hub.
Installer : 5-8840-0054-0
(J-29015)
Grip : 5-8840-0007-0
(J-8092)
5. Oil Seal
Place the inner bearing onto the outer race in the hub and
install a new oil seal and retaining ring.
Apply Besco L-2 or equivalent to the lip portion.
Installer : 5-8840-2120-0
(J-36830)
Grip : 5-8840-0007-0
(J-8092)

FRONT WHEEL DRIVE 4C1-65
Caution
After installation of the shims and the snap ring, check the
fitting condition of the snap ring.
12.Housing Assembly
(1) Apply Loctite 515 or the equivalent to the flange surface of
the housing assembly.
(2) Make sure that the housing assembly turns smoothly.
If it turns smoothly, the spacer selected above is correct.
(3) Bolt tightening torque :
Torque N
m (kgfm/lbft)
58.9
5 (6 0.5/43.4 3.6)