Isuzu N-Series. Manual — part 186
FRONT AXLE 4C-39
11. Ring
Remove the ring from the handle.
12. Cover
13. Inner Snap Ring
14. Body
Remove the inner snap ring from the back of body.
15. Outer Snap Ring
16. Ring
Remove the outer snap ring that joints inner and
ring, so that they are separated.
17. Spacer
18. Inner Hub Lock
Inspection and Repair
Make the necessary adjustments, repairs, and part re-
placements if excessive wear or damage is discovered
during inspection.
Cover Assembly
1. Inspect the cover and handle for presence of crack
or damage particularly in a sliding part.
2. Inspect the inner snap ring of cover for local wear
in the mounting groove.
3. Inspect the tension spring for wear, damage or
break.
Clutch Assembly
1. Inspect the retainer of clutch assembly for play in
the calked parts (3 places).
Re-calk if the axial play exceeds 0.1 mm.
2. Inspect the clutch teeth for crack, wear or damage,
and also the retainer lug for break or wear. Replace
the assembly if clutch or retainer is defective.
Body Assembly
1. Inspect the body, ring, inner snap ring, outer snap
ring and inner hub lock for crack, wear or damage
particularly in the teeth.
2. Inspect the inner snap ring mounting groove of the
hub lock body and the outer snap ring mounting
groove of the hub lock inner for an uneven wear.
N4A0331E
N4A0332E
N4A0331E
N4A0334E
4C-40 FRONT AXLE
Installation
1. Inner Hub Lock
2. Spacer
3. Ring
4. Outer Snap Ring
Apply grease (Multipurpose type) to each part of in-
ner hub lock and install it to the hub lock ring
(flange should face rear side), then fix it with outer
snap ring.
5. Body
6. Inner Snap Ring
1) Install the inner hub lock to hub lock ring, then
to the body, and fix them with inner snap ring.
2) Make sure that the inner hub lock and outer
snap rings are installed properly.
7. Cover
8. Ring
Apply grease (Multipurpose type) to the ring and in-
stall the ring to the handle.
Make sure that the ring is free from torsion.
9. Handle
10. Inner Snap Ring
1) Install the handle to the cover, and fix with inner
snap ring.
2) Make sure that the inner snap ring is installed
properly.
11. Tension Spring
1) Apply grease (Multipurpose type) to the tension
spring.
2) Insert the tension spring into the cover assem-
bly with the nail of spring engaged with the
groove.
There is no discrimination such as face or back
in the tension spring.
12. Inner Snap Ring
Fix the tension spring with inner snap ring.
13. Clutch Assembly
1) With the retainer lugs met with L-shaped parts
(3 places) at the edge of tension spring (A),
push and rotate spirally the retainer (B) so that
it is pinched by springs (C).
N4A0335E
N4A0336E
N4A0337E
FRONT AXLE 4C-41
2) The clutch must be in retract status when the
handle is set in FREE position.
3) Install the clutch assembly to the cover, and
measure the dimension “A” to confirm that it
satisfies the standard.
FREE status: 22.4 — 23.7 mm (0.88 — 0.93 in)
LOCK status: 32.6 — 33.9 mm (1.28 — 1.33 in)
14. Body Assembly
1) Apply grease (Multipurpose type) to the teeth of
hub lock body assembly.
2) Apply adhesive (LOCTITE 515 or equivalent) to
the flange surface of the body assembly.
15. Bolt
Apply adhesive (LOCTITE 242 or equivalent) to the
threads of body assembly fixing bolts, and tighten
them to the specified torque.
Tighten:
Body assembly bolt to 98 N
⋅m (10 kg⋅m / 72 lb⋅ft)
Measurement of axial play of front drive shaft
After installation of body assembly, measure axial play
of front drive shaft. If it is out of the standard range, ad-
just with shims listed below.
Standard play: 0 — 0.5 mm (0 — 0.020 in)
Kind of shims, 1.0, 0.5, 0.3 mm (0.039, 0.020, 0.012 in)
16. Snap Ring and Shim
Install the snap ring properly.
17. Cover Assembly
Apply adhesive (Three Bond 1215 or equivalent) to
the flange surface of the cover assembly.
18. Screw
With the handle in FREE position (clutch is disen-
gaged), adjust three grooves of body and tighten
the screws to the specified torque after applying
adhesive (LOCTITE 242 or equivalent) to the
threads.
Tighten:
Screws to 6 N
⋅m (0.6 kg⋅m / 52 lb⋅ft)
<Inspection of free wheel hub locking operation>
1. With the handle in FREE position, rotate the front
drive shaft. Normal if no load is applied.
2. With the handle in LOCK position, rotate the front
drive shaft. Normal if load is applied.
• Reference value
Load of front drive shaft: 3 N
⋅m (0.3 kg⋅m / 26 lb⋅ft)
3. Return the handle from LOCK to FREE position,
rotate the front drive shaft. Normal if no load is ap-
plied.
<Inspection of hub lock handle operating force>
The handle should be operated smooth and be moder-
ate in functioning when it is operated two or three times.
[Reference] Handle operating force:10 kg
⋅cm or less at
10
°C or above 100 kg⋅cm or less at −30°C.
N4A0338E
N4A0339E
N4A0340E
4C-42 FRONT AXLE
Front Hub and Brake Drum (4
× 4 Model)
Legend
A. Inside drum fixing type
7. Front axle hub inner bearing
B. Outside drum fixing type
8. Front hub oil seal
1. Wheel and tire
9. Front axle hub inner bearing outer race
2. Front locking hub set
10. Front axle hub outer bearing outer race
3. Front hub bearing lock washer
11. Front wheel pin and nut (Inside drum fixing type)
4. Front hub bearing lock nut
12. Brake drum
5. Front hub and brake drum assembly
13. Front axle hub
6. Front axle hub outer bearing
14. Front wheel pin and nut (Outside drum fixing type)
N4A0341E
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