Iveco Daily Euro 4. Manual

Figure 46

Figure 47

Figure 48

101977

Fit tapered-roller bearing internal ring (2) onto false pinion
99370309 (1) with the washer supplied (3).

51839

Position the dummy pinion 99370309 (1), assembled as
shown in Figure 46, on the external ring (2) of the tapered
roller bearing.
On the opposite side, fit the taper bearing internal ring (3)
on the dummy pinion (1) and the transmission shaft flange
(4) .

Screw on the nut (5) so that the dummy pinion turns freely
with no end float.

Fit the mounting 99395728 (2) with the dial gauge (1) on the
dummy pinion 99370309 (3).

Orientate the, previously zeroed, dial gauge so as to position
the rod on the lowest portion of the seat of the bearing
supporting the gear housing and note the difference A1.

Repeat the same operation on the seat of the other bearing
and note the difference A2.

Thickness S to be added to adjusting ring thickness (4,
Figure 50) used for measuring, for pinion positioning is
obtained by the following formula:

51840

A1 indicates the value measured on the right-hand seat.
A2 indicates the value measured on the left-hand seat.
B indicates the value marked on the bevel pinion (see
Figure 49).
For example:

= A1 + A2

− ( B)

1, 05

+ 1, 10

− (− 0, 05) =

2, 15

2 +

0, 05

The result of the formula must be added algebraically to the
value of the adjusting ring used to make the measurements.
Example:
if the value of the adjusting ring used is 3.00 mm, replace with
one measuring 4.125 mm (3.00 + 1.125).

1,125

REAR AXLE 450511

AILY

URO

Figure 49

Figure 50

Figure 51

Figure 52

Figure 53

18246

Unscrew the retaining nut, the transmission connection
flange and remove it and the bearing from the dummy pinion.

Remove the dummy pinion with the mounting 99395728,
dial gauge and rear bearing from the axle housing.

If the value marked on the pinion is preceded by a
positive sign (+), it must be subtracted from the
value of the sum divided by two for both seats,
whereas it has to be added if it is preceded by a
negative sign (-).

NOTE

51838

If required, replace adjusting ring (4) with a new one having
the calculated thickness, after removing bearing outer ring (3)
from rear axle casing (5) by beater.

Then fit the new adjusting ring (4) into rear axle casing (5).

Using the punch 99374092 (2) and grip 99370007 (1), mount
the external ring (3) of the tapered roller bearing.

18251

Using a suitable punch (1) and a hydraulic press, mount the
internal ring (2) of the tapered roller bearing on the bevel
pinion (3).

Position the fixed spacer (3) and the adjustment ring (2), used
previously to obtain the required rolling torque, on the bevel
pinion (1).

18252

62097

Position the axle casing as indicated in the figure.
Fit the taper bearing internal ring (1) and the transmission
shaft flange (2).
Position a suitable pipe (3) on the stand so that the flange (2)
and the taper bearing internal ring (1) are correctly
supported.

REAR AXLE 450511

AILY

URO

Figure 54

Figure 55

Figure 56

Mount the bevel pinion (1) in the axle housing so as to enter
the internal ring (2) of the tapered roller bearing.

Tap on the end of the pinion (1) so that the transmission shaft
flange retaining nut (3) can be fitted.

51845

Use tool 99370317 (2) to prevent the flange (1) from
rotating.

Tighten the bevel pinion retainer nut to the required torque
with a torque wrench (3).

51846

74728

Using torque meter 99389819 (1), detect bevel pinion rolling
torque.

If the reading differs from the prescribed value, disassemble
the pinion (1, Figure 54), replace the adjuster ring (2,
Figure 52) with a ring of the correct thickness.

Refit the pinion and repeat the rolling torque check.

The rolling torque must be measured at an ambient
temperature of 25

°C, making the pinion turn at a

speed of 50 rpm after it has made 10 turns.

NOTE

REAR AXLE 450511

AILY

URO

Lubricate the internal ring of the front bearing and position
it in the housing.

Using the key 99374022 (1) and grip 99370006 (2), mount
the pre-lubricated seal.

Determine bevel pinion rolling torque adjusting ring as
described above.

107983

51865

18252

Figure 57

Using a suitable punch, with a grip, drive the external ring (4)
for the front bearing into the axle housing (1).

Position stop ring (5) with 2 mm thickness and drive outer
ring (3) of rear bearing using a proper beater.

Determine bevel pinion position adjusting shim as described
above.

Remove the external ring (3) of the tapered roller bearing.

Position adjusting ring (2) having the calculated thickness, on
stop ring (5).

Refit the external ring (3) of the tapered roller bearing.

Heat the internal ring (4) of the tapered roller bearing to
80

°C ÷ 90°C for approximately 15 min. and drive it, with a

suitable punch, onto the bevel pinion (1).

Position the spacer ring (3) and adjustment ring (2),
calculated beforehand to obtain the required rolling torque,
on the bevel pinion (1).

51866

Position the axle housing as shown in the figure.

On the stand, set a pipe (3) of such diameter and length as
to provide a solid supporting surface for the flange (2) and
the internal ring (1) of the front bearing above, already
mounted in the axle housing.

Figure 58

Figure 59

Figure 60

The rolling torque of the bevel pinion must be
measured with lubricated bearings and seals.

NOTE

REAR AXLE 450511

AILY

URO

Differential unit refitting

Content .. 140 141 142 143 ..

Iveco Daily Euro 4. Manual - part 142