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Iveco Stralis AT/AD. Manual - part 224

77089

Figure 63

SUSPENSIONS

TRALIS

AT/AD

Base - January 2003

PART

TORQUE

kgm

M18 screw fixing triangular arm to rear axle housing

330 to 270

33 to 27

M20 flanged nut fixing stabilizer bar on air spring mounting and fixing link rod on chassis frame bracket

685 to 560

68.5 to 56

Nut for bolt fixing flexible anchoring to link rod

200 to 165

20 to 16.5

Nut fixing air spring to mounting

101 to 83

10.1 to 8.3

M20 nut with collar

900 to 750

90 to 75

M24 nut with collar for brackets fixing rear axle to suspension mounting

704 to 576

70.4 to 57.6

M20 nut fixing top and bottom shock absorber for rear axle

250 to 210

25 to 21

M18 x 1.5 nut fixing longitudinal rods

460 to 375

46 to 37.5

M18 screw fixing triangular arm to bracket

385 to 320

38.5 to 32

71519

Figure 64

Removal

If the screw (21) is fitted with its head on the outer
side of the vehicle, it will first be necessary to re-
move the side access step — air filter assembly (de-
tail B) used to help remove the front suspension.
Proceed as described below:
Remove the bolts (6) and (7) located inside the
battery compartment.
Take out the screws (24) fixing the handrail and
the bottom (4) and top (10) screws fixing the
handrail and the steps to the vehicle.
Remove the access steps and the handrail.
Disconnect the batteries and remove them from
the battery compartment.
Remove the bolt (5) and nuts (8).
Take out the screw (1) fixing the air pipe.
Disconnect the air sensor (9).
Remove the bracket bolts (3) and loosen the air
hose retaining strap (2) (detail A).
Remove the air cleaner complete with its hoses.
Remove the fastening (11) from the front mount-
ing (14).
Unscrew the four nuts (17) and extract the U-
bolts (18).
Disengage the shock absorber (23) front the sus-
pension via the fastening (19).
Remove the leaf spring (20).

Park the vehicle on level ground and chock the rear wheels.
Loosen the front wheel nuts.
Using a hydraulic jack, raise the front of the vehicle and support
it on two stands.
Unscrew the wheel nuts and using hydraulic trolley 99321024,
remove the wheels.

Position a hydraulic jack to support the axle when the leaf
spring is detached.
Then, lower the hydraulic jack supporting the axle until the
tension on the leaf spring is relieved.
Remove the lower access step (15) as follows:
Working from underneath the vehicle, remove the bolts (12)
securing the U-bolts (13) to the bracket.
At the side, remove the screw and the nut (16) with the front
bumper and extract the access step assembly (15).
Take out the screw (21) fixing the leaf spring (20) to the rear
shackle (22).

Carry out the removal operations in reverse order,
observing the prescribed torque settings.

Refitting

To secure the leaf spring on two connections to the
chassis frame it is necessary to load it so as to
stretch it to align the holes, using appropriate tools
and with the opposition of the load of the vehicle
and the hydraulic lifts.

SUSPENSIONS

TRALIS

AT/AD

500410

REMOVAL-REFITTING OF FRONT LEAF SPRING

73839

Figure 65

Removing longitudinal bars

Park the vehicle on level ground and chock the rear wheels.
Loosen the front wheel nuts.
Put a hydraulic jack equipped with mount 99370628 under the
axle.
Lift the vehicle at the front, rest it on two stands and, with the
hydraulic jack and mount 9937628, support the axle so that
the longitudinal bars (3) and (8) are parallel to the chassis
frame.
Remove the cab access steps. Take out the bolts (6) and
remove the access step mount (7).
Take out the screws (5) and disconnect the bottom bar (8)
from the mount (4). Repeat these operations for the top bar
(3).
Repeat the above for the opposite side.

For refitting, perform the operations described for removal in
reverse order, keeping to the following instructions:

the swivel head shanks (14) and (15) of the longitudinal bars
(3) and (8) need to be connected to the mountings (4) and
(12) when there is a distance X = 154 mm between the
mountings (12) and the structural members (13);

the swivel head shanks (11) of the transverse bar (1) need to
be connected when there is a distance X = 224.5 mm
between the mountings (12) and structural members (11);

Refitting

Removing transverse bar

Take out the screws (9) and remove the transverse bar (1)
from the mounts (2) and (10).

- tighten the nuts or screws to the required tightening

torque;

- the self-locking nuts must not be reused;

- check the state of the flexible pads and replace them if

deteriorated (operation 500417).

SUSPENSIONS

TRALIS

AT/AD

Base - January 2003

72895

Figure 66

Park the vehicle on level ground.
Raise the vehicle at the rear and place two stands under the
chassis frame.
Remove the wheels, unscrew the screws (13) and disconnect
the linkage (3) of the level sensor (1).
Unscrew the nuts (10) and disconnect the reaction bar (11).
Unscrew the nuts (2) and (8) and remove the shock absorber
(4).
Unscrew the nuts (5) fastening the air springs.
Unscrew the nuts (9), take out the associated U-bolts and
remove the arm (12) supporting the air springs.

The following operations have been performed on
a 4x2 T/P vehicle, but they are to be considered
good for the other vehicles too.

Refitting

Unscrew the screw (7) and remove the stabilizer bar (6) from
the air spring mounting (12).

For refitting, perform the operations described for
removal in reverse order, keeping to the following
instructions:

Removal

SUSPENSIONS

TRALIS

AT/AD

500730

REAR SUSPENSIONS

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