Iveco EuroCargo (12 to 26 t). Manual — part 122
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Steering knuckle bearing replacement (5) is made using for
their disassembly and assembly beater’s elements (1-2-3)
99374527 and handle 99370007 (4).
Use element (1) and handle (4) to disassemble the sealing
ring (8) and the roller bearings (6-7) on the upper side.
Use element (3) and handle (4) to disassemble the sealing
ring (9) and the roller bearings (10-11) on the lower side.
Use beater 99374171 (4) and handle 99370007 (3) to place
sealing rings (2 and 5) in the steering knuckle (1).
Reattachment
Set on the axle (2) the steering knuckle (3) and place the ar-
ticulated pin (1).
Set tool 99374400 (4) on the steering knuckle (3) and fasten
it by using the same lower cover lock screws (5), clamping
them with the right torque.
Place the pin (1) in the axle conical housing, screwing the
pressure screw (6) with a torque having 10
÷ 11 daNm.
Remove tool 99374400 (4) from the steering knuckle (3).
!
Before placing the pin (1), it is necessary to check
that the conical housing on the axle and the pin sur-
face are perfectly cleaned and dry, in order to avoid
oil layers which could foster the pin rotation in its
place during its introduction.
520615
Steering knuckle pin bearing
replacement
Figure 56
Figure 57
Figure 58
Figure 59
Roller bearing assembly (7):
use element (1 and 2) and handle (4).
Roller bearing assembly (6):
use element (2) and handle (4).
Roller bearing assembly (8):
use elements (3 and 2) and handle (4).
Roller bearing assembly (9):
use element (2) and handle (4).
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Place the lower cover (3) together with the lubricator (4), the
thrust block (2), the adjusting plates (1) and clamp the lock
screw (5) according to the prescribed torque.
Place in the steering knuckle (1) a new sealing ring (2).
Place the upper cover (2) together with the lubricator (3) on
the steering knuckle and clamp the screws (1) according to
the prescribed torque.
Keep the steering knuckle (3) raised and use a thickness
gauge (1) to check clearance between the upper shim adjust-
ment of the steering knuckle and the axle (2). This value must
be between 0.10 and 0.35 mm.
Once the clearance between the upper shim adjustment of
the steering knuckle (1) and the axle (3) has been checked,
use a thickness gauge (2) to check that between the lower
shim adjustment of the steering knuckle (1) and the axle’s (3)
one there is a gap not lower than 0.25 mm.
!
Before making the assembly, moisten the lower
cover (2) thrust block with grease Tutela MR2.
Repeat the same operations for the opposite steering
knuckle.
The possible clearance adjustment can be done re-
placing the adjusting shims (1, Figure 60) with spare
ones having the right thickness.
As to the thickness of spare rings, see table “SPEC-
IFICATIONS AND DATA”.
Lubricate the whole lower and upper articulated
joint with grease MR2, checking that the grease
flows through the gasket baffle.
Check and adjustment of clearance between
steering knuckle and axle
Figure 60
Figure 61
Figure 62
Figure 63
Figure 64
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Figure 65
Figure 66
Check flatness of leaf spring surfaces compared
to holes for steering knuckle pins.
Place two bars (1) fitted with cones (3) in the steering
knuckle pin holes. Push the cones and clamp them placing the
appropriate screws on the bars.
Introduce two centring dowels (2) in the leaf spring support-
ing plane (4).
Place on the planes (6) two bases (5) using goniometers and
introduce them in the centring dowels.
Before placing the bases with the goniometers,
check that the supporting planes are not painted or
irregular.
!
Place the sliding bar (2) on the goniometer’s bars (4), adjusting
its length so that the shaped edges touch the bars (1).
Clamp the screws of the stop block (7) and the goniometer’s
lock screws (3) to the bars (4).
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Place the brake callipers support (1) on the steering knuckle
(3) and clamp lock screws (2) according to the prescribed
torque.
Complete wheel hub assembly as described on page 27.
Figure 67
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CHECKS AND MEASUREMENTS OF
THE AXLE UNIT
Figure 68
Figure 69
Check hole inclination for steering knuckle
pins
Place on the bars (1) the supports (3) fitted with goniometers
and screw the screws (2) without clamping them.
Introduce the connecting cross tie rod (4) and tighten the
screws (2) which clamp the supports touching the bars (1).
Check the angle of inclination value concerning the steering
knuckle pin holes on the related graduated sectors (2), next
to the gauge (1). The angle of inclination concerning the
steering knuckle pin holes must be 7
° ± 0°3’.
Figure 70
Check the angle of deformation on the goniometers’ grad-
uated sectors shown by the arrows.
Goniometers’ indexes will, of course, detect no angle move-
ment when the flatness of leaf spring surfaces compared to
the steering knuckle pin holes is correct.
Remove the sliding bar and the goniometer’s bases used to
make the survey.
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