Engines Iveco C87 / Cursor 87. Manual

47577

77812

16798

35012

Figure 13

Figure 14

Figure 15

Place details 99360706 (1 and 2) and plate 99360724 (4) as
shown in the figure, by making sure that the plate (4) is
properly placed on the cylinder liners.

Tighten the screw nut (1) and remove the cylinder liner (3)
from the block.

Always replace water sealing rings (3, 4 and 5).

Install the adjustment ring (1) on the cylinder liner (2);
lubricate lower part of liner and install it in the cylinder unit
using the proper tool.

Check cylinder barrel protrusion with tool 99360334
(1-2-3-4) and tighten screw (1) to 170 Nm.

With dial gauge 99395603 (5) placed on base 99370415 (6).

Measure the cylinder barrel protrusion compared to the
cylinder head supporting plane, it must be 0,035 to 0,065 mm
(Figure 16); otherwise replace the adjusting ring (1,
Figure 14) fitted with spare parts having different thickness.

When the installation is completed, block the cylinder liners
(1) to the block (2) with studs 99360703 (3).

Fitting and checking protrusion

(Demonstration)

Figure 16

CYLINDER LINER PROTRUSION

114041

The adjustment ring (1) is supplied as spare parts
in the following thicknesses: 0.08 mm - 0.10 mm -
0.12 mm.

NOTE

540420

Replacing cylinder liners

Removal

Figure 17

SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS

F2C CURSOR ENGINES

114042

Figure 18

Figure 19

. Detail of main journals connections

Detail of crank pins connections

Figure 20

MAIN DATA FOR THE CRANK SHAFT PINS AND THE HALF BEARINGS

Check the condition of the journals and the big end pins; there must no be signs of scoring, ovalization or excessive wear.

The data given refer to the normal diameter of the pins.

114043

114044

Upper main journal half bearing

Lower main journal half bearings

5408

CRANKSHAFT

SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS

F2C CURSOR ENGINES

Base - June 2007

MEASURING CRANK PINS

During grinding, pay attention to journal and crank pins values
specified in figures 68 and 69.

47535

47536

Figure 21

Figure 22

MEASURING THE MAIN JOURNALS

540812

Measuring main journals and crank
pins

Before grinding the crank pins using a micrometer (1),
measure the main journals and the crank pins (2) and decide,
on the basis of the undersizing of the bearings, the final
diameter to which the pins are to be ground.

It is advisable to enter the values found in a table
(Figure 23).

All journals and crank pins must also be ground to
the same undersizing class, in order to avoid any
alteration to shaft balance.

Figure 23

Fill in this table with the measurements of the main journals and the crank pins.

MAIN JOURNALS

114045

Ø MIN.
Ø MAX.

CRANK PINS

NOTE

SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS

F2C CURSOR ENGINES

PRELIMINARY MEASUREMENT OF MAIN AND BIG END BEARING SHELL SELECTION DATA

For each of the journals of the crankshaft, it is necessary to carry out the following operations:

MAIN JOURNALS:
- Determine the class of diameter of the seat in the

crankcase.

- Determine the class of diameter of the main journal.

- Select the class of the bearing shells to mount.

CRANKPINS:
- Determine the class of diameter of the seat in the

connecting rod.

- Determine the class of diameter of the crankpin.

- Select the class of the bearing shells to mount.

DEFINING THE CLASS OF DIAMETER OF THE SEATS FOR BEARING SHELLS ON THE CRANKCASE

On the front of the crankcase, two sets of numbers are marked in the position shown (Figure 24 at top).

- The first set of digits (four) is the coupling number of the crankcase with its base.

- The following seven digits, taken singly, are the class of diameter of each of the seats referred to (Figure 24 at bottom).

- Each of these digits may be 1, 2 or 3.

114046

99.000 to 89.009

99.010 to 99.019

99.020 to 99.030

Figure 24

CLASS

MAIN BEARING HOUSING

NOMINAL DIAMETER

SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS

F2C CURSOR ENGINES

Base - June 2007

Content .. 23 24 25 26 ..

Engines Iveco C87 / Cursor 87. Manual - part 25