Isuzu N-Series. Service manual — part 165
REAR AXLE 4B-17
Removal
Preparation:
Jack up and support the vehicle on stands.
1. Wheel and Tire
Right side wheel nut (1) have right hand threads
and left side wheel nut (2) have left hand threads.
2. Axle Shaft
Use the axle shaft remover and the sliding hammer
to remove the axle shaft.
Axle Shaft Remover: 5-8840-2027-0
Sliding Hammer: 5-8840-0084-0
3. Outer Oil Seal
Use a pry bar to pry the oil seal from the axle case.
4. Lock Washer
5. Bearing Lock Nut
Use the lock nut remover to remove the lock nut.
Lock Nut Remover:
9-8522-1188-0 (For lock bolt P.C.D. 70 mm (2.8
in.))
9-8522-1606-0 (For lock bolt P.C.D. 74 mm (2.9
in.))
N4A0089E
N4A0090E
N4A0091E
N4A0092E
4B-18 REAR AXLE
6. Outer Bearing
If the bearings are to be reinstalled, tag each bear-
ing with the fitting position from which it was re-
moved.
7. Hub and Brake Drum
Use the rear hub remover to remove the hub and
the brake drum.
Rear Hub Remover:
9-8521-0116-0 (For NHR, NKR Flat Low)
Rear Hub Remover:
9-8521-2501-0 (For except NHR, NKR Flat Low)
8. Inner Oil Seal
9. Inner Bearing
10. Inner Bearing Outer Race
11. Outer Bearing Outer Race
Use a hammer and a brass bar (2) to drive the out-
er races (3) from the hub (1) at the two points
shown in the illustration.
N4A0093E
N4A0094E
N4A0095E
N4A0096E
REAR AXLE 4B-19
12. Wheel Pin
1) Set the rear hub with brake drum (1) to the
wheel with tire (2) previously removed from the
vehicle.
Turn the wheel pin nuts (3) counterclockwise to
loosen them.
2) The pin nuts are loosened counterclockwise on
both sides of the vehicle.
3) Remove the brake drum from the rear hub.
4) Discard the wheel pins and nuts.
The wheel pins and nuts cannot be reused.
13. Hub
14. Brake Drum
Inspection and Repair
Make necessary adjustments, repairs, and part replace-
ment if excessive wear or damage is discovered during
inspection.
Axle Shaft Spline
Inspect the spline for wear, damage or other abnormal
conditions.
Axle Shaft Run-Out
Limit, 1 mm (0.039 in)
N4A0097E
N4A0098E
N4A0099E
N4A0100E
4B-20 REAR AXLE
Axle Shaft Flange Run-Out
Limit, 0.15 mm (0.00591 in)
Hub
Inspect the oil seal and bearing fitting faces for exces-
sive wear and damage.
Inspect the wheel pin threads and stud bolt threads for
excessive damage and cracks.
Bearing
Inspect the bearing for excessive wear, abnormal noise,
rough rotation, and freezing.
Lock Washer
Inspect the lock washer for excessive wear, cracks,
warpage, and other damage.
Bearing Lock Nut
Inspect the bearing lock nut threads and contact surfac-
es for excessive wear, warpage, and other damage.
Light damage to the contact surfaces can be repaired
with an oil stone or a piece of fine sandpaper.
N4A0101E
N4A0102E
N4A0103E
N4A0104E
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