Engines Iveco C10,C13, Cursor 10, Cursor 13. Manual — part 65

- Lubricate the internal screws (1) with UTDM oil and

tighten them with a torque wrench (3) to a torque of
120 Nm, using tool 99395216 (4), to an angle of 60

°,

following the diagram below.

Set two journals of the crankshaft (2) parallel to the
longitudinal axis, a section of calibrated wire. Using
appropriate hooks and tackle, mount the crankcase base (1).

60559

47579

47578

47588

60593

Figure 36

Figure 37

Figure 38

Figure 39

Figure 40

- Remove the crankcase base.
The clearance between the main bearings and their journals
is measured by comparing the width taken on by the
calibrated wire (2) at the point of greatest crushing with the
graduated scale on the case (1) containing the calibrated
wire.
The numbers on the scale give the clearance of the coupling
in millimetres. If you find the clearance is not as required,
replace the bearing shells and repeat the check.

FRONT SIDE

DIAGRAM OF SEQUENCE FOR TIGHTENING THE SCREWS FIXING THE BOTTOM CRANKCASE BASE TO THE CRANKCASE

Checking crankshaft end float

α

The end float is checked by setting a dial gauge (1) 99395603
with a magnetic base on the crankshaft (2) as shown in the
figure. If you find the clearance to be greater than as required,
replace the rear main bearing shells carrying the thrust
bearings and repeat the clearance check.

To check bench pin assembly clearance use the
screws removed during under block disassembly
seeing to replace them with new ones for definitive
assembly.

NOTE

SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS

25

F3B CURSOR ENGINES

47595

47596

Figure 41

Figure 42

Place the half-bearings (1) on the main bearings in the
underblock (2).

By means of suitable equipment (1) apply silicone LOCTITE
5970 IVECO No. 2992644 to the block, as shown in the
figure.

Sealant application diagram

Fit the underblock within 10’ of the application of
the sealant.

Figure 43

49021

47581

Figure 44

Figure 45

Fit the sub-engine block and use a dynamometric wrench (2)
to tighten the outer hexagonal-grooved screws (1) to 30 Nm
according to the diagrams on the following page.

Fit the underblock by means of a suitable hoist and hooks (1).

49022

47579

Figure 46

Close the inner screws (1) to 120 Nm torque by means of
a dynamometric wrench (3), then with two further angular
phases 60

° + 55°, using tool 99395216 (4). Tighten again the

outer screws (1, Figure 45) with 60

° angular closing, using

tool 99395216 (3, Figure 45).

α

α

ASSEMBLING

THE

ENGINE

ON

THE

BENCH

NOTE

Use new screws every time the under block is
re-assembled.

NOTE

26

SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS

F3B CURSOR ENGINES

Base - May 2007

60593

FRONT SIDE

stage 4:

angle
inner

screws

(55º)

60592

60594

Figure 47

stage 1:

pretightening
outer screws

(30 Nm)

FRONT SIDE

FRONT SIDE

FRONT SIDE

stage 2:

pretightenig

inner screws

(120 Nm)

stage 5:

angle

outer

screws

(60º)

FRONT SIDE

stage 3:

angle
inner

screws

(60º)

60593

60593

DIAGRAM SHOWING THE UNDERBLOCK FIXING SCREWS TIGHTENING ORDER

SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS

27

F3B CURSOR ENGINES