Iveco Stralis AT/AD. Manual — part 15
47576
47571
47570
By means of proper and splined wrenches, untighten the
screws (1) and (2) and remove the under-block (3).
Remove the crankshaft (2) with tool 99360500 (1).
Remove the crankshaft half-bearings (1), untighten the screws
and remove oil spray nozzles (2).
Take down cylinder liners as specified in the relative paragraph
on page 49.
!
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.
47575
Untighten screws (2) fixing the connecting rod cap (3) and
remove it. Remove the connecting rod-piston assembly from
the upper side. Repeat these operations for the other pistons.
Figure 45
Figure 46
Figure 47
Figure 48
46
ENGINE F2B
S
TRALIS
AT/AD
Base - January 2003
A = Selection class Ø 115 to 115.012 mm
B = Selection class Ø 115.010 to 115.022 mm
In case of maximum wear max 0.150 mm or maximum
ovalization max 0.100 mm compared to the values indicated
in the figure, the liners must be replaced as they cannot be
ground, lapped or trued.
540410
CYLINDER BLOCK
540420
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 115 mm.
!
If a 115 ring gauge is not available use a micrometer
caliper.
A = Ø 130.200 to 130.225 mm
B = Ø 128.510 to 128.535 mm
C = Ø 130.161 to 130.186
D = Ø 128.475 to 128.500 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.
34994
47439
47440
47441
Figure 49
Figure 50
Figure 51
Figure 52
1 = 1st measuring
2 = 2nd measuring
3 = 3rd 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 50.
(Demonstration)
!
Cylinder liners are equipped with spare parts with
“A“ selection class.
ENGINE F2B
47
S
TRALIS
AT/AD
REPAIR OPERATIONS
45150
45150a
47533
Figure 53
Figure 54
CYLINDER LINERS MAIN DATA
DETAIL “X”
“A“ = Selection class marking area
Figure 55
47534
BLOCK WITH CYLINDER LINERS
A mm 115.000 to 115.012
B mm 115.010 to 115.022
Selection class
A
48
ENGINE F2B
S
TRALIS
AT/AD
Base - January 2003
47577
77812
16798
35012
Figure 56
Figure 57
Figure 58
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 59); otherwise replace the adjusting ring (1,
Figure 57) 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 59
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.
Figure 60
ENGINE F2B
49
S
TRALIS
AT/AD
540420
Replacing cylinder liners
Removal
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