Isuzu N-Series. Service manual — part 182
FRONT AXLE 4C-23
9. Hub
10. Disc
• If need, separate the hub on disc.
Torx bit (T70): 5-8840-2368-0
11. Back Plate
12. Knuckle
• Disconnect the tie rod end joint and upper link
end joint from the knuckle.
Tie Rod End Remover: 5-8840-2017-0
• Remove the two bolts fixing the lower link end
and remove the knuckle together with the lower
link end.
• Remove the lower link end from the knuckle.
Inspection and Repair
Make the necessary adjustments, repairs, and part re-
placements if excessive wear or damage is discovered
during inspection.
Visual Inspection
Inspect the following parts for cracking, deformation,
and corrosion.
Legend
1. Bolt
2. Hub
3. Disc
N4A0281E
N4A0282E
N4A0283E
N4A0284E
4C-24 FRONT AXLE
Disc
Use a vernier caliper to measure the disc thickness.
If the measured value is less than the specified limit, the
disc must be replaced.
Disc thickness,
Standard: 35.0 mm (1.38 in)
Limit: 33.5 mm (1.32 in)
Installation
1. Knuckle
Tighten:
• Lower link joint nut to 377 N
⋅m (38.4 kg⋅m / 278 lb⋅ft)
• Lower link end bolt to 219 N
⋅m (22.3 kg⋅m / 161 lb⋅ft)
• Upper link joint nut to 205 N
⋅m (20.9 kg⋅m / 151 lb⋅ft)
• Tie rod joint nut to 108 N
⋅m (11 kg⋅m / 80 lb⋅ft)
• Discard used cotter pin and install new one.
2. Back Plate
Tighten:
Back plate bolt to 13 N
⋅m (1.3 kg⋅m / 113 lb⋅ft)
3. Disc
4. Hub
Tighten:
Disc bolt to
• M14: 155 N
⋅m (15.8 kg⋅m / 114 lb⋅ft)
• M16: 219 N
⋅m (22.3 kg⋅m / 163 lb⋅ft)
Be sure that the race is completely seated in the
hub.
Outer Bearing Outer Race Installer: 5-8840-2026-0
Legend
1. Hub
2. Disc
3. Inner race
4. Outer race
5. Inner bearing
6. Outer bearing
7. Wheel pins
N4A0285E
N4A0286E
Legend
1. Bolt
2. Hub
3. Disc
N4A0282E
FRONT AXLE 4C-25
Be sure that the race is completely seated in the
hub.
Inner Bearing Outer Race Installer: 5-8840-2235-0
Apply the specified amount of the multipurpose
type grease (1) to the hub cavity.
Grease amount: 96 g (3.4 oz)
5. Inner Bearing
Apply grease (multipurpose type) to the inner bear-
ing.
6. Oil Seal
Use a hammer and installer to install the oil seal.
The oil seal surfaces must be flat.
Use a new oil seal.
Oil Seal Installer: 5-8840-2235-0
7. Outer Bearing
8. Hub and Disc Assembly
1) Install the hub and disc assembly to the knuck-
le.
2) Apply grease (multipurpose type) to the outer
bearing (1).
N4A0287E
N4A0260E
Legend
1. Inner bearing
2. Oil seal
3. Flat
4. Hub
N4A0288E
N4A0289E
4C-26 FRONT AXLE
3) Install the bearing to the hub.
9. Thrust Washer
10. Hub Nut
1) Install the thrust washer (1) and hub nut (2).
2) Tighten the nut until you are unable to manually
rotate the hub and disc assembly.
3) Loosen the nut.
4) Attach a spring balancer to one wheel pin.
Gradually retighten the nut until the hub and
disc assembly bearing is adjusted to the speci-
fied preload.
Hub bearing preload,
NHR new bearing: 14 — 28 N (1.4 — 2.9 kg
⋅m / 3 — 6
lb
⋅ft)
NKR new bearing: 12 — 26 N (1.2 — 2.7 kg
⋅m / 3 — 6
lb
⋅ft)
NHR
⋅ NKR reused bearing: 7 — 22 N (0.7 — 2.2 kg⋅m /
2 — 5 lb
⋅ft)
5) Align the nut slot with the knuckle cotter pin
hole.
If necessary, slightly tighten the nut to align the
slot and the hole.
6) Discard used cotter pin and install new cotter
pin.
11. Hub Cap
1) Apply LOCTITE or liquid gasket to the engage-
ment part with hub.
2) If severe deformation is found, replace with a
new one.
3) Apply the specified amount of the approved
grease (Multipurpose type) to the hub cap.
Grease amount: 40 g (1.4 oz)
4) Install the disc brake caliper assembly to the
knuckle.
Tighten:
Disc brake caliper bolt to 219 N
⋅m (22.3 kg⋅m / 161 lb⋅ft)
N4A0290E
N4A0291E
N4A0292E
N4A0293E
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