Isuzu N-Series. Service manual — part 174
REAR AXLE 4B-53
9. Side Bearing Inner Race
Installer: 9-8522-1614-0
Grip: 9-8522-1148-0
Drive Pinion Cage Assembly
This illustration is based on the 292 mm differential.
N4A0197E
N4A0198E
N4A0199E
Legend
1. Flange nut
6. Oil seal
2. Flange
7. Outer bearing inner race
3. Drive pinion
8. Outer bearing outer race
4. Collapsible spacer
9. Inner bearing outer race
5. Inner bearing inner race
10. Pinion cage and O-ring
4B-54 REAR AXLE
Disassembly
1. Flange Nut
Flange Bracket: 9-8529-2101-0
2. Flange
3. Drive Pinion
4. Collapsible Spacer
5. Inner Bearing Inner Race
Remover: 5-8840-0015-0
6. Oil Seal
7. Outer Bearing Inner Race
8. Outer Bearing Outer Race
Drive out the outer bearing outer race together with
the outer bearing inner race and oil seal or the in-
ner bearing outer race by using a proper bar
through the two notches.
9. Inner Bearing Outer Race
10. Pinion Cage and O-ring
Reassembly
1. Pinion Cage and O-ring
Discard used O-ring and install a new one.
2. Inner Bearing Outer Race
Installer:
5-8840-2046-0 (292 mm)
5-8840-2379-0 (320 mm)
Grip:
9-8522-1608-0
3. Outer Bearing Outer Race
Installer:
9-8522-1613-0 (292 mm)
5-8840-2376-0 (320 mm)
Grip:
9-8522-1608-0
4. Outer Bearing Inner Race
N4A0200E
N4A0201E
N4A0202E
N4A0203E
REAR AXLE 4B-55
5. Oil Seal
Installer:
9-8522-1607-0 (292 mm)
5-8840-2377-0 (320 mm)
Grip:
9-8522-1608-0
6. Inner Bearing Inner Race
Installer:
9-8522-1615-0
7. Collapsible Spacer
Discard used collapsible spacer and install a new
one.
8. Drive Pinion
9. Flange
10. Flange Nut
Discard used flange nut and install a new one at re-
assembly.
Adjustment of bearing preload.
1) Tighten the flange nut to a torque of 245 N
⋅m
(25 kg
⋅m/181lb⋅ft).
2) Adjust bearing preload by tightening the flange
nut until specified preload is obtained.
3) The flange nut should be within the specified
range when specified preload is obtained.
Tighten:
Flange nut to
• 292 mm differential: 324 — 480 N
⋅m (33 — 49 kg⋅m /
238 — 354 lb
⋅ft)
• 320 mm differential: 441 — 598 N
⋅m (45 — 61 kg⋅m /
325 — 441 lb
⋅ft)
Apply oil to seated surface of nut when tightening.
Legend
1. Installer
2. Oil seal
3. Outer bearing
N4A0204E
N4A0205E
Preload at Cage Fixing
Hole
N (kg/lb)
292 mm
New bearing
13 — 25 (1.3 — 2.6/2.9 —
5.7)
Used bearing
6.5 — 12.5 (0.65 — 1.3/
1.5 — 2.9)
320 mm
New bearing
26 — 38 (2.7 — 3.9/6.0 —
8.6)
Used bearing
13 — 19 (1.35 — 1.95/3.0
— 4.3)
Starting Torque
N
⋅m (kg⋅cm/lb⋅in)
292 mm
New bearing
0.98 — 1.96 (10.0 — 20.0/
8.7 — 17.4)
Used bearing
0.49 — 0.98 (5.0 — 10.0/
4.3 — 8.7)
320 mm
New bearing
2.3 — 3.2 (23.0 — 33.0/20
— 28.6)
Used bearing
1.2 — 1.6 (12.0 — 16.0/
10.4 — 13.9)
4B-56 REAR AXLE
4) Using special tool, stake the flange nut at two
points.
Punch: 5-8840-2293-0
Limited Slip Differential (LSD); Viscous Type
Function (NPS Model Only) <Except Taiwan, Australia and GCC>
N4A0206E
Legend
1. Spacer ring
6. Side gear (LH)
2. Inner plates (20 plate in all)
7. Differential case
3. Outer plates (19 plate in all)
8. Spider pinion
4. Silicon oil
9. Side gear (RH)
5. Viscous coupling
N4A0207E
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