Iveco Stralis AT/AD. Manual — part 161
Adjust the end float between the teeth on the bevel gear pair
as follows:
- Read the clearance value between the teeth in
Figure 105.
39710
39711
39704
- Position a magnetic dial gauge (1) as shown in the
drawing.
- Prevent the bevel pinion from rotating with reaction lever
99370317, reverse the direction of rotation of the bevel
gear and, using a gauge (1), read the clearance between
the teeth on the two gear units.
If not, using the wrench 99354001 (1, Figure 107), adjust the
adjusting ring nut.
In order to prevent the previously measured rolling torque
from varying, during adjustments of the coupling clearance
between the pinion and the bevel gear teething, tighten the
ring nut with the wrench 99354001 (1) by the same amount
as the ring nut on the opposite is loosened.
On completion of operations, check that the two adjusting
ring nuts are suitably positioned to allow the safety plate to be
fitted.
Using a brush, apply a light covering of Prussian blue on the
teeth of the bevel gear.
Rotate the pinion and check the coloured contact marks that
the pinion teeth have made on the bevel gear teeth.
The following drawings illustrate possible contact marks and
the operations required in order to correct the faults.
Figure 105
Figure 106
Figure 107
Figure 108
94
REAR AXLE 451391
S
TRALIS
AT/AD
Base - January 2003
Ratio
Clearance between teeth
17/35
2.059
0.2
÷ 0.33
19/33
1.737
0.2
÷ 0.33
21/34
1.619
0.2
÷ 0.33
23/36
1.565
0.2
÷ 0.33
24/35
1.458
0.2
÷ 0.33
28/37
1.321
0.2
÷ 0.33
27/32
1.185
0.2
÷ 0.33
21/40
1.905
0.2
÷ 0.33
27/37
1.370
0.2
÷ 0.33
29/37
1.276
0.2
÷ 0.33
40160
40161B
40161A
39713
39714
26609
Figure 109
Figure 110
Figure 111
Figure 112
Figure 113
Figure 114
The contact marks should be on both the leading face (1) and
the pushing face (2), more or less in the centre between the
teeth. When working without a load, both contact zones
should be slightly out of position in relation to the external
diameter of the bevel gear.
If the mark on the leading face (towards the external diameter)
and on the pushing face (towards the internal diameter) is out
of position, the pinion is located too close to the bevel gear.
- Solution: decrease the thickness of the adjusting ring (2,
Figure 91) between the intermediate bearing and the bevel
pinion.
If the mark on the leading face is positioned towards the internal
diameter, and on the pushing face it is located towards the
external diameter of the bevel gear, the pinion is located too far
away from the bevel gear axis.
- Solution: increase the thickness of the adjusting ring (2, Figure 91)
between the intermediate bearing and the bevel pinion.
Assemble the engaging sleeve (1) on the gear housing
toothing and, with a screwdriver, position the circlip (2) in the
groove.
Fit the differential lock engagement assembly comprising: the
control cylinder, the piston (2), the engaging fork (1) and the
compression spring (3).
Introduce the compression spring (1) in the differential
housing. Fit the engaging fork (2) so that fork (a) travel limit
corresponds with travel limit (b) on the differential housing.
REAR AXLE 451391
95
S
TRALIS
AT/AD
39715
Figure 115
Fit a new seal ring (1) on the control piston (2) and smear with
grease.
Introduce the control piston (2) on the engaging fork (3) in the
compression spring, then fit the assembly in the gap on the
differential housing.
Disassemble the bevel pinion support.
Fitting the differential on the axle housing.
1.
Fit the sliding sleeve on the drive shaft.
2.
Fit the gear housing assembly, taking care that the fork
engages in the groove on the sliding sleeve.
3.
Tighten the screw whilst pushing the drive shaft so that
the sliding sleeve engages on the differential engaging
sleeve.
4.
Apply LOCTITE 573 on the threads and under the heads
of the screws and tighten to the correct torque with a
torque wrench.
5.
Apply LOCTITE 573 on the contact surface, refit the
pinion support and tighten the screws to the correct
torque.
96
REAR AXLE 451391
S
TRALIS
AT/AD
Base - January 2003
AXLES IN TANDEM MERITOR RT 160 E/1
97
S
TRALIS
AT/AD
Axles in Tandem
MERITOR RT 160 E/1
Page
AXLE IN TANDEM MERITOR RT 160 E/1:
- INTERMEDIATE MERITOR RP 160 E
99
- REAR MERITOR RR 167 E
147
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