Engines Iveco C10,C13, Cursor 10, Cursor 13. Manual — part 26
60518
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Untighten screws (2) fixing the connecting rod cap (3) and
remove it. Remove the connecting rod-piston (1) assembly
from the upper side. Repeat these operations for the other
pistons.
By means of proper and splined wrenches, untighten the
screws (1) and (2) and remove the under-block.
47574
Rotate the block (1) to the vertical position.
Using tool 99360500 (1), remove the crankshaft (2).
Remove the main bearing shells (1), unscrew the screws and
take out the oil nozzles (2).
Remove the cylinder liners as described under the relevant
subheading on page 14.
After disassembling the engine, thoroughly clean
disassembled parts and check their integrity.
Instructions for main checks and measures are given
in the following pages, in order to determine
whether the parts can be re-used.
Keep the big end bearing shells in their respective
housings and/or note down their assembly position
since, if reusing them, they will need to be fitted in
the position found upon removal.
Note down the assembly position of the top and
bottom main bearing shells since, if reusing them, they
will need to be fitted in the position found upon
removal.
ENGINE OVERHAUL
ENGINE REMOVAL AT THE BENCH
The
following
instructions
are
prescribed
on
the
understanding that the engine has previously been placed on
the rotating bench and that removal of all specific
components of the equipment have been already removed
as well. (See Section 3 of the manual herein).
The section illustrates therefore all the most important
engine overhaul procedures.
47571
47570
60519
NOTE
The screws of the connecting rod wires must be
used again up to when the diameter of the
threading (d) measured in zone (L) is not less than
13.4 mm. Otherwise replace the screw.
Before assembly lubricated screw threading with
engine oil.
NOTE
NOTE
NOTE
117694
11
CURSOR ENGINES F3A
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
Base - May 2007
A = Selection class
∅ 125 — 125.013 mm
B = Selection class
∅ 125.011 — 125.024 mm
X = Selection class marking area
In case of maximum wear >0.150 mm or maximum
ovalization >0.100 mm compared to the values indicated in
the figure, the liners must be replaced as they cannot be
ground, lapped or trued.
REPAIR OPERATIONS
CYLINDER BLOCK
Checks and measurements
Internal diameter of the cylinder liners is checked for
ovalization, taper and wear, using a bore dial (1) centesimal
gauge 99395687 (2) previously reset to ring gauge (3),
diameter 125 mm.
If a 125 mm ring gauge is not available use a
micrometer caliper.
A = Ø 142.000 to 142.025 mm
B = Ø 140.000 to 140.025 mm
C = Ø 141.961 to 141.986 mm
D = Ø 139.890 to 139.915 mm
The figure shows the outer diameters of the cylinder liners
and the relative seat inner diameters.
The cylinder liners can be extracted and installed several
times in different seats, if necessary.
Check the state of the cylinder assembly machining plugs: if
they are rusty or there is any doubt at all about their seal,
change them.
34994
60595
60597
Figure 6
Figure 7
Figure 8
Figure 9
1 = 1
st
measuring
2 = 2
nd
measuring
3 = 3
rd
measuring
Carry out measurings on each cylinder liner at three different
levels and on two (A-B) surfaces, to one another
perpendicular, as shown in Figure 7.
(Demonstration)
Cylinder liners are equipped with spare parts with
“A“ selection class.
60596
x
NOTE
NOTE
12
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
CURSOR ENGINES F3A
Base - May 2007
116810
Figure 10
Figure 11
CYLINDER LINERS MAIN DATA
DETAIL “X”
“Y“ - Selection class marking area
Figure 12
BLOCK WITH CYLINDER LINERS
A 125.000 to 125.013 mm
B 125.011 to 125.024 mm
Selection class
60598
60601
Cylinder liners
13
CURSOR ENGINES F3A
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
Base - May 2007
47577
16798
60521
Figure 13
Figure 14
Figure 15
Figure 16
Place details 99360706 (2) and plate 99360726 (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 the protrusion of the cylinder liners, using tool
99360334 (2) and tightening screw (1) to 225 Nm torque.
Using a dial gauge (3), measure the cylinder liner protrusion,
from the cylinder head supporting surface, it must be 0.045
to 0.075 (Figure 16); otherwise, replace the adjustment ring
(1, Figure 14) supplied as spare parts having different
thicknesses.
When the installation is completed, block the cylinder liners
(1) to the block (2) with studs 99360703 (3).
Fitting and checking protrusion
Figure 17
CYLINDER LINER PROTRUSION
49017
The adjustment ring (1) is supplied as spare parts in the
following thicknesses: 0.08 mm - 0.10 mm - 0.12 mm.
60520
0.045 to 0.075
Replacing cylinder liners
Refitting
NOTE
14
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
CURSOR ENGINES F3A
Base - May 2007
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