Isuzu N-Series. Manual - part 162

REAR AXLE 4B-5

292 mm (11.5 in) size

320 mm (12.5 in) size

N4A0055E

N4A0056E

4B-6 REAR AXLE

ON-VEHICLE SERVICE

Rear Hub and Brake Drum (NHR Model; Semi Floating)

Single Tire

Legend

1. Wheel and tire

6. O-ring

2. Brake drum

7. Bearing lock nut and washer

3. Axle shaft with brake assembly

8. Bearing holder

4. Shim

9. Bearing

5. Axle case oil seal

10. Oil seal

N4A0057E

REAR AXLE 4B-7

Removal

Preparation:
Raise vehicle to working level.
Support the axle assembly with a suitable jack and
chassis stands.

1. Wheel and Tire
2. Brake Drum

Before disassembly of axle shaft assembly, dis-
connect the following parts.
Disconnect the brake pipe from brake wheel cylin-
der on the back plate.

3. Axle Shaft with Brake Assembly

Remove four nuts from the bearing holder fixing-
bolts.

4. Shim
5. Axle Case Oil Seal
6. O-ring
7. Bearing Lock Nut and Washer

1) Flatten the locking portion on the lock nut.
2) Clamp special tool; wrench into vise, and

mount axle shaft into wrench.
Wrench: 5-8840-2329-0

3) Install special tool onto flange studs, lock into

position with two wheel nuts, and turn axle shaft
loose from lock nut.
Remover: 5-8840-2003-0

Notice:
Because of the high torque on the locknut, it is some-
times advantageous to have an assistant when perform-
ing this operation.

N4A0058E

N4A0059E

N4A0060E

N4A0061E

4B-8 REAR AXLE

8. Bearing Holder

Remove the bearing holder and bearing from the
axle shaft by means of a press.

Notice:
Only a slight amount of pressure from the press is re-
quired to loosen bearing from the shaft. Be sure to sup-
port the backing plate solidly, and to hold onto the axle
shaft to prevent it from falling to the floor.

9. Bearing

Drive out the bearing outer race using a special
tool.
Remover: 9-8521-1772-0
Grip: 9-8522-1148-0

10. Oil Seal

Installation

1. Oil Seal

Installer: 9-8522-1269-0

2. Bearing

Installer: 9-8522-1268-0
Grip: 9-8522-1148-0
Apply generous amount of grease to the bearing
inner race.

N4A0062E

N4A0063E

N4A0064E

N4A0065E