Iveco Stralis AT/AD. Manual — part 213
36836
- Apply MODILAC grease to the threads of the slipper
block (1);
- apply resin for box frames to bolt contact surfaces and
holes in the bracket (2);
- after having aligned the parts, pre-tighten bolts (3) in
cross-wise sequence to a torque of 100 Nm;
- finally tighten bolts (3) to a torque of 420 Nm.
Tightening the U-bolts clamping the leaf spring
to the central pivot
Tighten the leaf spring (4 and 6) clamping nuts (5 and 7) as
follows:
- tighten nuts (5) to a torque of 300 to 500 Nm
- tighten nuts (7) to a torque of 750 to 900 Nm
- tighten nuts (5) to a torque of 750 to 900 Nm
Figure 7
20
SUSPENSIONS
S
TRALIS
AT/AD
Base - January 2003
Fit the pipe (3) of hydraulic pump 99341035 (1) to the bracket
hole (1); operate the pump until the shaft (2) is released from
the bracket (1).
Remove the screw (6) and plate (5) and pull out the shaft (2)
from the bracket (1).
39073
39074
39075
39076
39077
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
500440
Removing-reassembling the central
support
500442
Removing-reassembling the central
support shaft
500443
Replacing the bearings
500449
Removing-reassembling the bracket
Removing the central support
Using puller 99348002 (5) and counter block 99345055 (4),
pull out the central support (1) from the shaft (3), together
with outer half bearing (2).
Loosen the screw (6) by approx. 1 turn.
Remove the drag links (2 and 3) and take down the bracket (1).
To replace the upper bracket (1, Figure 14), take out the screws
(
⇒) and remove the bracket from the side members.
Using a hydraulic press, remove the inner half bearing (2) from
the shaft bearing (1).
Lift the rear of the vehicle and rest the chassis and axles on
stands.
Remove the wheels.
Remove the leaf spring.
Remove the split ring (6) and cap (5).
Remove the screws (4), plate (3) and adjusting shims (2)
underneath.
Removing the central support shaft
!
Do not remove the screw (6) and plate (5), since in
the next operation this prevents violent ejection of
the shaft (2) from the bracket.
Replacing the bracket
Replacing the half bearings
SUSPENSIONS
21
S
TRALIS
AT/AD
To remove the half bearing outer rings (4 and 5) from the
central support (3) use a suitable beater.
To reassemble, use beater 99347094 (2) and, with a press,
partially insert the rings into the central support (3).
Completely reassemble using a hammer, fitted with 99370007
handgrip (1).
39078A
39080
39079
Figure 13
Figure 14
Figure 15
Using tool 99374119 (1), fit the seal ring (2) to the central
support (3).
Then, reinstall the guard ring (4).
Reassembling the bracket
Fasten lower bracket (10) to upper bracket (1) and tighten the
screws to the prescribed torque, following the direction of
arrow B.
If the bracket (1) has also been removed, proceed as follows:
- tighten 2-3-4-5-6-7-8-9 screws in this order until the
components completely adhere;
- tighten the screws to the prescribed torque, following the
direction of arrow A and then arrow B;
- re-tighten to the prescribed torque, following the direc-
tion of arrow A;
- Tightening torque for lower bracket (10) to bracket (1)
fastening screws is 395 to 590 Nm;
- Tightening torque for upper bracket to chassis fastening
screws is 215 to 325 Nm.
10
22
SUSPENSIONS
S
TRALIS
AT/AD
Base - January 2003
Keeping the shaft (2) locked, operate hydraulic pump
99341035 (3) and at the same time tighten screw(1) until the
shaft (2) is at level B. This is equal to A-C, where A is the
distance previously measured and C is the value indicated in
the table.
Distance B must range among the values listed in the table.
39081
39083
39082
39084
39385
Figure 16
Figure 17
Figure 18
Figure 19
Figure 20
Insert the shaft (1) into the bracket (2), with the holes
positioned as shown in the figure; place the plate (4) on the
bracket (2) and fasten it to the shaft (1) with screw (3).
Tighten the screws (
⇒) in the shaft holes (1); place a ruler (2)
on the holes and make sure A and B ends are the same
distance from the ground. If they are not, reposition the shaft
(1).
Lock the shaft (1) and tighten the screw (3, Figure 16) to 50
Nm torque. Measure distance A between shaft end (1) and
bracket (2).
The measured value must range among the values listed in
Figure 19 table.
After B value is found, open the back flow valve on hydraulic
pump 99341035 and wait at least 10 minutes before
tightening the screw (1) to 830 to 665 Nm (83 to 66.5 kgm)
torque. Remove pump 99341035 pipe from the bracket and
close the oil filling hole with a suitable plug.
Lubricate the seal ring (
⇒) with TUTELA MR3 grease and fit
it to the shaft (2). Using tools 99346238 (3), 99363296 (4),
99363245 (5), 99346004 (6), fitted on the shaft (2) as shown,
fit the inner half bearing (1) to the shaft.
!
Towards the end of the shaft assembly process, the
oil pressure ranges between 800 and 1300 bars.
Reassembling the central support
SUSPENSIONS
23
S
TRALIS
AT/AD
Reassembling the central support shaft
A
217.5 to 220.5
B
213.5 to 216.5
C
4.5
+ 0.5
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