Engine Iveco Vector 8. Manual — part 16

Figure 57

Adjusting operating clearance between valves
and rockers

- Undo the three nuts fixing the flywheel cover casing

cover (side opposite the starter motor).

Fit tool

99368502 (6) with pinion 99368547 to rotate the engine
flywheel and secure it using the nuts for the cover
removed.

- After fitting the 24 mm ratchet wrench on the back of

tool 99368502, turn the engine flywheel until we obtain
the required cylinder balancing (the 4 valves are at the
same height).

Figure 58

- Unscrew the three fixing nuts of the cover of the box

that covers the flywheel (on the opposite side of the
starting motor). Insert tool 99368502 in order to turn
the engine flywheel and fix it with the nuts of the cover
that has been removed.

- Turn the engine clockwise for 360˚, then assemble

rocker—arm units 3-7 e 8.

- Check that the contact between the register and the

plate is centred and that the rods can turn freely.

Figure 59

- Apply the 20

÷ 120 Nm torque wrench with the 1/2”

square connection to the wrench 99389813 to lock
bolts M12x1,75 to a torque of 80

÷ 89 Nm.

- After the rocker—arm control rods (1) have been

assembled check that they are properly inserted in the
tappet seats and then lubricate then with engine oil in the
area in which the rod slides.

89827

81603

89829

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- Using the wrench 99368503 (4), loosen the check nut

(1) of the adjuster screw (2).

- Insert the tappet feeler gauge (0,50 mm) 99368545 (3).

- With wrench, screw or unscrew the adjuster screw (2).

- Check that the tappet feeler gauge (3) can slide with a

slight amount of friction.

- Keeping the adjuster screw still (2), use wrench

99368503 (4) to lock the check nut (1) of the adjuster
screw.

Figure 60

Figure 61

Figure 62

Figure 63

- To obtain cylinder no.1 or no.6 in T.D.C. conditions it is

necessary to position the damping flywheel as indicated
in the picture. For the following balancing/adjustments it
is recommended to trace some marks on the flywheel
(1), placed at 90

° one from the other (see picture).

- After obtaining this condition of balancing we move on

to adjust the valves in the following order:

- To make the adjustment, proceed as illustrated here:

BALANCING

ADJUST

FIRST STEP

BALANCING

ADJUST

SECOND STEP

- Apply the 10 — 60 Nm torque wrench with the 3/8”

square connection 99389831 (1) to the wrench
99368503 to lock the nut (1, Figure 63) to a torque of
34 to 44 Nm.

- Adjust the clearance between all valves and all rockers.

- Extract the tool for turning the flywheel and close the

flywheel cover.

Figure 64

83505

82722

81605

82723

81606

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Base - April 2006

Figure 65

Figure 66

- Position a new gasket.

- Fit the tappet cover (2) on the head.

- Insert the cover fixing screws (1) and tighten them to a

torque of 20—24Nm.

Fitting the cylinder head tappet covers

Fitting the injectors

- If the side inspection covers have been removed, fit on

both sides of the tappet cover together with the gasket.

- Tighten the screws of the inspection covers to a torque

of 7—10 Nm.

82219

82256

NOTE

NOTE

NOTE

The cover fixing screws have different lengths:
M8x1.25x40 front screws (three per cover)
M8x1.25x25 rear screws (two per cover)

Always change the seal.

Always change the O—ring in the assembly phase.
Lubricate the O-rings with vaseline before fitting.

- Clean the injector seat (1) thoroughly and fit the injector

complete with mounting bracket (2) in its seat pressing
it until it clicks and is correctly inserted.

- Screw down the M10x1.5x70mm injector fixing screw

to a torque of 32

÷36 Nm.

- Fit all the electro—injectors.

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Figure 67

LUBRICATION

The engine is lubricated by a gear pump driven by the
crankshaft.

There is a safety valve located on the oil filter mounting which
starts opening at 3.4

± 0.3 bar.

Lubricating pressure with oil at 110

°C:

- max pressure up to 6.5 bar

- min pressure 4.0 bar

- Remove the covers (1) and (2) by unscrewing the screws

(3).

- Change the filtering parts (4) and the gaskets (5).

- Carefully clean the blow—by filter body (6) and the

covers.

The oil vapours that form inside the engine during operation
are directed into a condenser (blow-by filter) where some
of them are condensed and recirculated again and some of
them are directed via two pipes to the intake.

The oil vapour condenser needs a periodical overhaul.

engine oil is a pollutant. Protect your skin suitably
against contact with engine oil.

82716

SECTION 3 - INDUSTRIAL APPLICATION

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Base - April 2006