Iveco Stralis AT/AD. Manual — part 134
43985
Figure 46
Figure 47
Heat the internal ring of the bearing (1) to approximately
85ºC and mount it on the shaft of the rotor (2).
Figure 48
43984
Transfer the assembly to the bench and lock (2) the gear
mounted on the rotor shaft in a vice so as to support the
assembly.
Heat the seating of the outer race (1) of the taper roller
bearing and install the outer race.
70975
Leave the bearing to cool and fit the front half box (5) on the
rotary stand 99322205 (3) together with the mount
99322225 (4).
Fit the tool 99370047 (2) for pre-loading the bearing.
Pre-load the bearing so that the rolling torque that can be
measured with the torque wrench (1) is 2
±0.5 Nm.
Using a feeler gauge (6) measure the thickness of the half
rings (2, Figure 49): distance A.
Figure 49
For both types of hydraulic retarder
71272
Insert the half rings (2) of the thickness measured
beforehand.
Mount the cover (1).
Dent cap (1) using a suitable tool.
Apply sealant on the thread of the plug (6) and screw it down
with a new washer (7) and tighten it to the required torque.
Insert the valve (5) and the spring (4) into the front box (1).
Apply sealant on the thread of the plug (2), screw it down
with a new gasket (3) and tighten it to the required torque.
70973
Figure 50
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Base - January 2003
70971
Figure 51
Figure 52
Put a new gasket on the front box (3).
Mount the rear box (1), screw down the screws (2) and
tighten them to the required torque.
Figure 53
70969
In the rear box (1), insert:
- Pressure adjustment valve (10), spring (9) and cup (8).
Apply sealant on the thread of the adjustment device (7),
screw it down with a new washer, tightening it to the
required torque.
- Pressure control valve (2) and mount the proportional
solenoid valve (4) with a new seal (3).
Screw down the screws (5) and tighten them to the
required torque.
Figure 54
!
Do not take off the cover (6) so as not to tamper
with the adjustment device (7).
70698
In the rear box (17), insert:
- Safety ball valve (16), spring (15) and plug (13) with
washer (14).
- Pressure relief valve (12), springs (10-11), cup (9) and
screw down the plug (7) with the washer (8).
- Screw down the plug (6) with the washer (5).
- Switchover valve (4), spring (3) and screw down the plug
(1) with the washer (2).
Fit the roller bearing (5) and circlip (4) in the rear half box (1).
Position the seals (2 and 3) on it.
70967
!
Before mounting the plugs (13-7-5 and 1), apply
sealants on their threads.
The plugs have to be tightened to the required
torque.
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Figure 55
Figure 56
Mount the roller bearing (3) in the pump casing (1) and
secure it with the circlip (2).
Figure 57
70966
Mount the ring gear (4), the rotor (5) and the pump casing (2).
Screw down the screws (1) and tighten them to the required
torque.
Position the seals (3).
Figure 58
43988
71287
Refit the heat exchanger (1) to the hydraulic retarder and
tighten the fixing nuts (3 and 5).
Mount the temperature sensor (2). Mount the seal (4).
Refit the hydraulic accumulator (1) together with the
electropneumatic valve (3).
Screw down the screws (2 and 4) and tighten them to the
required torque.
70963
Figure 59
44003
Using installation tool 99374221 (1), install a new oil seal (2)
in the hydraulic retarder casing.
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Figure 60
Determine the thickness H of the stator end float adjustment
ring.
- With a depth gauge (1) and calibrated rule (2), measure
the distance between the supporting surface of the
stator (distance A).
- Measure the thickness of the gasket between the
retarder and the gearbox (distance B).
The thickness H of the stator end float adjustment ring is
given by the following equation:
H = A + B + C
Where,
- A and B = measurements made
- C
= 0.05 mm: pre-load of stator end float
adjustment ring (-0.05 - +0.05 mm).
Refit the hydraulic retarder as described under the relevant
heading of gearbox overhauling.
70946
Stator end float adjustment
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