Iveco EuroCargo (12 to 26 t). Manual — part 55

33575

33576

61957

Figure 28

Figure 29

Assemble comparator (1) on base 99370466 (2).
Pre-load it with 5 mm and zero it on a striker plane.

Place calibrated ring 99396032 (2) in the tapered roller
bearing seat, without adjustment ring, on front cover; place
base

99370466

completed

with

previously

zeroed

comparator (1), as shown in Figure 28.

First method —

Take note of the value read on comparator
(Example: 2.43 mm).

Second method —Take note of the value read on comparator

and add it to calibrated ring thickness
[Example: 2.43 + 50.5 = 52.93 mm
(dimension B)].

The pre-loading adjustment for secondary shaft bearings can
be carried out with two procedures.

CLUTCH SUMP (FRONT CASE)

THICKNESS (S)

Figure 30

33601

61956

BACK COVER

Assemble and simultaneously rotate secondary shaft
completed with bearings into rear case (3), so that it settles.
Place calibrated rings 99396032 (2) on case (3). Arrange, as
shown in Figure 30, base 99370466 completed with
previosuly zeroed comparator (1): the comparator rod must
abut on external bearing ring. Carry out the measure on two
diametrally-opposed points and carry out the arithmetic
mean.

First method —

Take note of the value read on comparator
(Example: 1.84 mm). The adjustment ring
value is obtained by adding the two
measured values
(Example: 2.43 + 1.84 = 4.27 mm)

Second method —Take note of the value read on comparator

and subtract it from calibrated ring
thickness
[Example: 50.5 — 1.84 = 48.66 mm
(dimension A)].

The adjustment ring value is obtained through formula
S = B — A

Example: 52.93 — 48.66 = 4.27 mm.

!

The adjustment ring rounding is carried out always in
excess. Example: thickness
S = 4.27: thickness S = 4.3 is taken.
The measure for dimension “A” is carried out with
secondary shaft in vertical position that, in addition to
making the measure itself easier, allows having an axial
load on rear bearing.

After having computed the adjustment ring thickness value,
disassemble again secondary shaft from rear case.

GEARBOX 2865.6

E

URO

C

ARGO

T

ECTOR

12-26 t

64

Base - February 2003

33604

32447

33605

Figure 31

Figure 32

Figure 33

Place, into the secondary shaft bearing seat on front cover (1),
the adjustment ring (2) whose thickness is equal to the
previously-obtained one.

Center the external race (1) of secondary shaft tapered roller
bearing of front cover on extendable beater 99374092 (2)
adjusted with the setscrew wrench (3). Lock the beater with
the setscrew wrench (4).

Slightly heat seat (2) of secondary shaft bearing race and
assemble external race (3) settling it till it abuts with beater
99374092 (1), equipped with handle 99370007 (4).

Figure 34

33606

Slightly heat the ball bearing seat, assemble motion entry shaft
(1) completed with ball bearing, rolling half-races and ring nut
(2). Settle bearing (3) till it abuts.

33607

Temporarily assemble on primary shaft the motion outlet
flange and secure it with a check nut. Assemble together, on
a bench and with the help of a lifter, primary shaft (2),
secondary shaft (4) and engagement fork control shaft (3);
keep them mutually joined by means of a rope.

Figure 35

GEARBOX 2865.6

E

URO

C

ARGO

T

ECTOR

12-26 t

65

Base - February 2003

Insert cylindric roller bearing into motion entry shaft and
assemble the three shafts together on front cover (1).

33608

33609

Figure 36

Figure 37

Remove temporarily previously-assembled ring nut and nut
and assemble gearbox case (1). Tighten screws joining front
cover and case at the required torque.

Figure 38

Figure 39

Apply sealer LOCTITE 510 on the surface (

→) without

staining the push rod supporting area (1, Figure 39).

79439

79438

Insert tip (1), spring (2), then mount cover (3) and fasten
screws (4) by tightening them to the specified torque.

GEARBOX 2865.6

E

URO

C

ARGO

T

ECTOR

12-26 t

66

Base - February 2003