Iveco Stralis AT/AD. Manual — part 51
60593
FRONT SIDE
stage 4:
angle
inner
screws
(45º)
60592
60594
Figure 155
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
(90º)
60593
60593
DIAGRAM OF TIGHTENING SEQUENCE OF CRANKCASE BASE FIXING SCREWS
S
TRALIS
AT/AD
190
F3A ENGINE
Base - January 2003
49030
Turn the cylinder block, setting it upright.
Lubricate the pistons, piston rings and inside the cylinder liners.
With the aid of the clamp 99360605 (1) mount the connecting
rod — piston assemblies (2) in the cylinder liners according to
Figure 157. Check that:
- The number of each connecting rod corresponds to the
cap coupling number.
- The symbol (2, Figure 157) punched on the top of the
pistons faces the engine flywheel or the recess in the
piston skirt tallies with the position of the oil nozzles.
60615
Figure 156
Connecting rod — piston assembly.
Area of punch marking on the top of the
piston with the symbol for the mounting
position and selection class.
Area of connecting rod punch marking.
Figure 157
60616
Fitting connecting rod - piston assemblies
in cylinder liners
Figure 158
1
2
3
2
3
4
!
Not finding it necessary to replace the connecting rod
bearings, you need to fit them back in exactly the
same sequence and position as in removal.
If they have to be replaced, choose the connecting
rod bearings according to the selection described
from page 161 to page 167. Lubricate the bearing
shells (1 and 3) and fit them on the connecting rod (2)
and on the cap (4).
!
Do not make any adjustment on the bearing shells.
!
The pistons are supplied as spares in class A and can
also be fitted in class B cylinder liners.
191
S
TRALIS
AT/AD
F3A ENGINE
47594
Figure 159
Figure 160
Figure 161
Figure 162
Figure 163
Figure 164
Connect the connecting rods to the relevant pins of the
crankshaft, mount the connecting rod caps (1) together with
the bearing shells. Tighten the screws (2) fixing the connecting
rod caps to a torque of 60 Nm (6 kgm). Using tool 99395216
(3), tighten the screws further with an angle of 60
°.
Using the centring ring 99396035 (2), check the exact position
of the cover (1). If it is wrong, proceed accordingly and lock
the screws (3).
Key on the gasket (1), mount the key 99346250 (2) and,
screwing down the nut (3), drive in the gasket (1).
Check that the pistons 1-6 are exactly at the T.D.C.
Put the gasket (2) on the crankcase.
Mount the cylinder head (1) and tighten the screws as shown
in Figs. 163 — 164 — 165.
Diagram of the tightening sequence of the screws fixing the
cylinder head.
- Pre-tightening with the torque wrench (1):
1
st
phase: 60 Nm (6 kgm).
2
nd
phase: 120 Nm (12 kgm).
60563
60564
α
60515
60565
61270
!
Before reusing the screws (2), measure the diameter
of the thread; it must be no less than 13.4 mm; if it is,
change the screw.
Lubricate the thread of the screws with engine oil
before assembly.
!
Lubricate the thread of the screws with engine oil
before assembly.
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AT/AD
192
F3A ENGINE
Base - January 2003
Apply LOCTITE 5699 silicone on the gear housing, using
appropriate tools (1), as shown in the figure.
The sealer string (1) diameter is to be 1,5
±
Using a torque wrench, tighten the highlighted screws with the
following sequence and tightening torques:
4 screws M12 x 1.75 x 35
63 Nm
10 screws M12 x 1.75 x 100
63 Nm
1 screw M12 x 1.75 x 120
63 Nm
2 screws M12 x 1.75 x 70
63 Nm
Figure 165
Figure 166
Figure 167
60566
- Closing to angle with tool 99395216 (1):
3
rd
phase: angle of 120
°.
4
th
phase: angle of 60
°.
Mount the oil pump (4), the intermediate gears (2) together
with the link rod (1) and lock the screws (3) in two phases:
pre-tightening
30 Nm.
closing to angle
90
°.
47592
60567
α
α
60633
Figure 168
Figure 169
Key on the gasket (1), mount the keying device 99346251 (2)
and, screwing down the nut (3), drive in the gasket.
!
Mount the gear housing within 10 min. of applying the
sealant.
60568
2 screws M12 x 1.75 x 193
63 Nm
:
0.5
0.2
193
S
TRALIS
AT/AD
F3A ENGINE
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