Isuzu N-Series. Manual — part 164
REAR AXLE 4B-13
Removal
Preparation:
Jack up and support the vehicle on stands.
1. Wheel and Tire
2. Brake Drum
3. Axle Shaft
Remove the collar by tapping on the upper face of
the axle shaft with a hammer, then remove the axle
shaft.
4. Outer Oil Seal
Take out the hub outer oil seal using a screwdriver.
5. Lock Washer
6. Bearing Lock Nut
Wrench: 9-8522-1188-0
7. Hub Assembly
Remover: 9-8521-0116-0
If the hub inner bearing and the hub inner oil seal
remain on the axle tube, remove the hub inner
bearing using a special tool.
Remover: 9-8521-0092-0
8. Outer Bearing
9. Inner Oil Seal
10. Inner Bearing
Drive out the hub inner bearing outer race together
with the hub inner bearing inner race and the hub
inner oil seal by using a proper bar through two
notches.
N4A0077E
N4A0078E
N4A0079E
N4A0080E
4B-14 REAR AXLE
11. Hub
Installation
1. Hub
2. Inner Bearing
Install the bearing outer race.
Installer: 9-8522-1194-0
Grip: 9-8522-1148-0
If removed outer bearing outer race, install the
bearing outer race.
Installer: 9-8522-1195-0
Grip: 9-8522-1148-0
Apply specified grease into the bearing and grease
well in the hub.
Amount of grease: 280 g (9.8 oz)
3. Inner Oil Seal
Installer: 9-8522-1607-0
Grip: 9-8522-1608-0
4. Outer Bearing
5. Hub Assembly
6. Bearing Lock Nut
1) Install the bearing nut, so that its side with
notched line is turned outward.
The forty eight (48) slits are provided on the
bearing nut, to ensure locking and easy main-
tenance.
N4A0081E
N4A0082E
N4A0083E
N4A0082E
REAR AXLE 4B-15
2) Align notched line on the bearing nut with the
center of groove in the axle case, so that two
threaded holes in the bearing nut line up with
two holes in the lock washer.
Wrench: 9-8522-1188-0
3) Adjustment of wheel bearing preload.
Bearing preload (at wheel pin), 42 — 52 N (4.3 — 5.3 kg
/ 9.5 —11.7 lb)
4) While the wheel bearing pre-load is adjusted, if
the notched line on the bearing nut is not
aligned with the groove on the axle case, adjust
to turn the lock nut clockwise to align.
7. Lock Washer
Install lock washer and fix it to the bearing nut by
the lock bolt. The lug of lock washer should be in-
serted to the groove on the axle case.
8. Outer Oil Seal
9. Axle Shaft
Tighten:
Axle shaft nut to 46 N
⋅m (4.7 kg⋅m / 34 lb⋅ft)
10. Brake Drum
11. Wheel and Tire
Tighten:
Wheel nut to 167 N
⋅m (17 kg⋅m / 123 lb⋅ft)
N4A0085E
N4A0086E
4B-16 REAR AXLE
Rear Hub and Brake Drum (NHR, NKR, NQR, NPS Models; Full Floating)
Legend
1. Wheel and tire
8. Inner oil seal
2. Axle shaft
9. Inner bearing
3. Outer oil seal
10. Inner bearing outer race
4. Lock washer
11. Outer bearing outer race
5. Bearing lock nut
12. Wheel pin
6. Outer bearing
13. Hub
7. Hub and brake drum
14. Brake drum
N4A0421E
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