Iveco Stralis AT/AD. Manual — part 152
49211
72772
49213
49214
Figure 13
Figure 14
Figure 15
Figure 16
Before replacing wheel hub bolts (3) with new ones, make
sure the bolt head supporting surface is free from slags, burrs
or nicks.
Insert the new bolts by applying a load on their heads not
exceeding 2,500 Kg.
After inserting the bolts, make sure they fit completely.
Before replacing the wheel hub cap (2, Figure 13), apply a
layer of putty having 40 to 240
°C heat resistance to the cap
contact surface and hub housing.
To reassemble the phonic wheel (1, Figure 13), pre-heat the
wheel to 150
°C; when the phonic wheel has been fitted,
make sure it is perfectly rested on the hub housing.
Put the bearing (2) on the wheel hub (3) with the seal (4)
positioned as shown in the figure.
Fit the bearing (2) using a press and tool 99370706 (1).
Make sure the bearing is properly inserted with the wheel
hub shoulder.
Screw tool 99370700 (1) on the sleeve and assemble the
wheel hub (2), complete with bearing. Remove tool
99370700 (1) and place the seal ring (3), inserting the tab into
the sleeve slot, then screw the ring nut (4).
Using wrench 99355180 (1), multiplier (2) and torque
wrench (3), tighten the ring nut (4, Figure 15) to the
prescribed torque 834 to 1030 Nm).
Wheel hub reassembly
!
The force for driving in the bearing with the press has
to be 25,000 to 85,000 N.
58
REAR AXLE MS 13-175
S
TRALIS
AT/AD
Base - January 2003
REPLACING THE WHEEL HUB
BOLTS
49216
Using a fit tool key the spacer ring (5, Figure 19) and check
that a play of 0
÷ 0.145 mm between wheel hub outer side
and spacer side, making two measures at 180º.
Lock the wheel hub with tool 99370317 (7).
Fit the drum (1) to the wheel hub (6) and fasten it by
tightening the screws (2) to the prescribed torque.
Apply sealant IVECO 1905685 (LOCTITE 14780) to both
half-shaft flange and wheel hub contact surfaces.
Fit the screws (3) fastening the half-shaft (5) to the wheel hub
(6) and tighten them with torque wrench (4) to the
prescribed torque.
After these operations, replenish the axle housing with oil up
to the right level.
49213A
After tightening, using an appropriate tool, notch and bend
the ring nut as shown in Figure 17 so it cannot be unscrewed.
The arrow shows the direction of unscrewing the ring nut.
Figure 17
Figure 18
REAR AXLE MS 13-175
59
S
TRALIS
AT/AD
49217A
49218
WHEEL HUB COMPONENTS
1. Screw - 2. Half-shaft - 3. Ring nut - 4. Safety ring - 5. Spacer ring - 6. Bearing - 7. Wheel hub -
8. Wheel hub cap - 9. Brake drum - 10. Axle sleeve
526210
REMOVING AND REASSEMBLING
THE DIFFERENTIAL
(with axle on stand 99322215)
Removal
Take down the half-shafts as described at page 60, remove
the screws fastening the differential housing (1), insert three
screws, which are used as pullers, into the threaded holes and
remove the differential from the axle casing (2).
Axle casing check
Carefully check axle casing alignment. Warping, it may cause
abnormal stress and noise.
!
To perform the checks on the axle housing it is
necessary to remove the wheel hubs.
Figure 19
Figure 20
60
REAR AXLE MS 13-175
S
TRALIS
AT/AD
Base - January 2003
REAR AXLE 451391
61
S
TRALIS
AT/AD
5250
Rear axle 451391 (R 8284)
Page
DESCRIPTION
63
. . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIFICATIONS AND DATA
64
. . . . . . . . . . . . . .
TIGHTENING TORQUES
65
. . . . . . . . . . . . . . . . . .
TOOLS
67
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REAR AXLES ASSEMBLY OVERHAUL
73
. . . . . . . .
- Disassembly
73
. . . . . . . . . . . . . . . . . . . . . . . . . . .
- Epicycloid reduction gear disassembly
73
. . . . . . .
- Wheel hub disassembly
74
. . . . . . . . . . . . . . . . . .
CHECKING THE WHEEL HUB AND EPICYCLOID
REDUCTION GEAR UNIT PARTS
76
. . . . . . . . .
WHEEL HUB ASSEMBLY
77
. . . . . . . . . . . . . . . . . .
- Assembling the epicycloid reduction gear
79
. . . .
REMOVING-REFITTING THE DIFFERENTIAL
82
. .
REPAIRING THE DIFFERENTIAL
84
. . . . . . . . . . . .
- Disassembly
84
. . . . . . . . . . . . . . . . . . . . . . . . . . .
- Gear housing disassembly
85
. . . . . . . . . . . . . . . . .
- Removing the bevel pinion support
86
. . . . . . . . .
CHECKING THE DIFFERENTIAL PARTS
88
. . . . . .
- Gear housing assembly
89
. . . . . . . . . . . . . . . . . . .
- Assembling the bevel pinion support
90
. . . . . . . .
- Procedure to follow to determine the thickness
of the bevel pinion rolling torque adjusting ring
90
- Differential housing assembly
92
. . . . . . . . . . . . . .
- Gear housing bearings rolling torque adjustment
93
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