Engine Iveco Vector 8. Manual — part 15
Figure 46
Tightening: pre—torque + angle
Pre—torque = 350 Nm
Angle 120
°
Torque 910 to 1600 Nm
82246
NOTE If the screws turn out to have been removed
previously, check the stated diameter: if the
diameter ”d” turns out to be < 23.5 mm.
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SECTION 3 - INDUSTRIAL APPLICATION
VECTOR 8 ENGINES
Base - April 2006
Print P2D32V001E
Figure 47
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1
1
2
3
4
6
7
8
5
12
13
9
10
11
- Check the dimensions of the parts removed, examining
their state of wear.
Replace all the seals and O-rings.
NOTE
- Check the spacer (8, Figure 47): check the state of wear
of the zones of contact with the shaft (5) and the
dimensions as shown in the figure.
- Insert the new O—rings in their seats on the spacer (1)
and, with the aid of a drift, go ahead with assembly on the
crankcase.
- Tighten the spacer fixing screws to the prescribed torque:
M10x1.5x25 mm cheese—headed screws: 45 to 50 Nm.
Lubricate the screws with ”UTDM” oil or alternatively
with engine oil.
Figure 48
82248
Figure 49
82250
- In addition, check the state of wear of both the bearings
and the gears. If there is noisiness or clear seizure of the
gears, replace them.
- Check the state of wear of the teeth of the gears and the
contact surface between the inside of the bearing and
the shaft.
NOTE The conical roller bearings and the gear are supplied
as spares already fitted.
The gear has the following dimensions:
-outer diameter 180, 700 P 180,900 mm;
-No. of teeth 34.
Fitting the gearbox
SECTION 3 - INDUSTRIAL APPLICATION
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VECTOR 8 ENGINES
Print P2D32V001E
Base - April 2006
Figure 50
Figure 51
- Check the state of the contact surface of the shaft and
its dimensions. Blow compressed air into the bearing
lubrication passage to remove any debris.
- After applying a bead of IVECO 45500318 sealant onto
the contact surface of the crankcase with the gearbox,
position the box.
Tighten the fixing screws to the prescribed torque:
M8x1.25: 22—27 Nm
- Then fit the gear complete with conical roller bearings
on the shaft and fit the assembly in place on the spacer
fitted previously on the engine block. Tighten the bolt
fixing the shaft to the spacer to the recommended
torque: hexagonal head bolts M12x1.75x80 mm: 73 P 80
Nm.Before tightening, lubricate the bolt with UTDM oil
or, alternatively, with engine oil.
- Fit the seal (1) in its seat on the gearbox with the aid of
tool 99368512.
82251
- On the opposite side, fit the shaft illustrated in the
diagram. The idler gear should not be present.
- Take the new flat gasket out of the package and put it
in its seat on the gearbox cover.
- Fit the cover together with the gasket on the gearbox.
Tighten the screws to the prescribed tightening torque.
M8x1.25x30mm hexagonal—head screw: 22—27 Nm.
Replace all the seals.
NOTE
Figure 52
103471
NOTE If the studs fitting the cooling pump and the sump
have been removed from the cover and from the
gear casing, proceed with fitting them.
82252
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SECTION 3 - INDUSTRIAL APPLICATION
VECTOR 8 ENGINES
Base - April 2006
Print P2D32V001E
Figure 53
Figure 54
The valve pushrods must be free from distortion; the cup
seatings for the adjustment screws and the ball ends locating
in the tappets (arrowed) must not show any signs of seizing
or wear; if they do, replace the rods.
Pushrods for inlet and exhaust valves are identical and
therefore interchangeable.
ROCKER ARM ASSEMBLY
ROCKER ARMS
JUMPERS
ROCKER ARM SUPPORT ROCKERS
- Check that the rocker arms (2), jumpers (3) and support
(1) show no sign of wear, scoring or seizure.
Riscontrando anomalie, sostituire i particolari interessati.
- Check that the plug is assembled on the end of each
rocker—arm holding shaft.
RODS
- Install rods (1), rocker arm supports (2) with rocker arms
and bridges (3).
Figure 56
Make sure that the bevelled side of the fall plate is
turned towards the inside of the engine.
Figure 55
- Make sure that cylinder 1 is in the firing order and that
cylinder 6 is balanced, then assemble rocker—arm units
1-2-4-5 and 6.
- Check that the contact between the register and the
plate is centred and that the rods can turn freely.
82261
82721
82262
89828
NOTE
SECTION 3 - INDUSTRIAL APPLICATION
27
VECTOR 8 ENGINES
Print P2D32V001E
Base - April 2006
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