Iveco Daily. Manual — part 257
Figure 31
Figure 32
Figure 33
Figure 34
Figure 35
62099
18222
Loosen screws (2), remove ring bevel gear (3) and gear
housing (4) cover (1).
Remove from gear housing (1) the sun gear (2) on cover side
including shoulder washer (3).
Mark cover (1) and gear housing (4).
NOTE
18226
Take planetary gear (1), complete with shoulder washer, out
of the wheel-case.
101974
Take pin (2) out of wheel-case (1), then remove the two
planetary gears (3), complete with shoulder washers (4),
from the wheel-case.
Raise the securing ring (
⇒) on the flange (1) nut (3).
Using tool 99370317 (2), block rotation of the coupling (1).
Remove the nut (3).
51824
51825
Figure 36
Take flange (1) off bevel pinion (2).
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51826
61866
51828
74727
Figure 37
Figure 38
Figure 39
Figure 40
Using a bronze punch, strike in the direction shown by the
arrow to eject the bevel pinion (1), with the rear bearing, the
fixed spacer and adjustment ring from the axle housing (2).
Remove the seal (1) and the internal ring (2) of the front
bearing.
Use a punch to remove the external rings (3 - 4) of the
tapered roller bearings from the axle housing (1) and take out
the adjustment shim (2).
With axle 99341003 (2), brackets 99341011 (1), press
99341015 (5) extract the internal ring (3) on the bevel pinion
(4).
Carefully clean the single components of the differential
locking.
Lubricate the bearings and rotate the roller cage freely;
rotation must be even and without signs of stiffness. Check
the support surfaces of the ring bevel gear and the striking
surface of the half-casing so that the ring bevel gear fits
perfectly. Deformations of such parts, could determine
vibration of the ring bevel gear fastening screws, thus
compromising the perfect operation of the unit.
Check that the splined section for the flange-pinion
connection is not badly worn, if it is, replace the pinion.
Checking the parts comprising the differential
Carefully clean all the threads in order to obtain
exact adjustments and accurate tightening torque.
NOTE
Check the planetary gears with their shoulder washers, the
pin and the crown wheels with their shoulder washers.
Replace all the sealing elements, the bevel pinion retaining
nut and the gear housing bearing adjustment ring nut with
new parts.
Assembly
If it is necessary to replace the ring bevel gear or
pinion, replace both parts since they are supplied
in pairs.
NOTE
The tapered roller bearings are supplied as spare
parts, lubricated with rustproof oil.
They must not be washed or heated for assembly.
The differential housing support bearings must
both be from the same supplier.
NOTE
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DIFFERENTIAL UNIT COMPONENTS
1. Nut - 2. Transmission coupling sleeve - 3. Seal ring - 4. Front bearing - 5. Pinion shim ring - 6. Fixed spacer - 7. Adjuster ring
- 8. Rear bearing - 9. Bevel pinion - 10. Bevel ring - 11. Adjuster ring - 12. Fixed ring - 13. Bearing - 14. Gear casing - 15.
Crown wheel thrust washer - 16. Crown wheel - 17. Planetary gear thrust washer - 18. Planetary gear - 19. Short pin - 20.
Gear casing - 21. Screw.
Figure 41
101975
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Assemble the cover and make the marks made during
disassembly coincide. Assemble the ring bevel gear and fasten
this to the half-casing by means of the fixing screws.
By means of a dynamometric wrench (1) tighten the fixing
screws (2) to the required tightening torque.
Rotate the planetary gears-crown wheel unit and check that
it is free without stiffness.
Fit the other planetary gear (2), complete with shoulder
washer (3), into the wheel-case (1).
Position the two planetary gears (1), complete with shoulder
washers, into the wheel-case, then insert pin (3).
Position the crown wheel (1), gear housing side, complete
with shoulder washer, into its own housing.
18226
18237
Figure 42
Figure 43
Figure 44
Figure 45
Assembly of gear housing
Only for axles with differential lock.
Using tool 99305121, heat thrust ring (1) to a temperature
of 120ºC
÷ 150ºC for 15’ and fit on the gear casing (2) from
the side with the differential lock.
18240
Figure 46
1
2
101974
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Revi - February 2005
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