Engine Iveco Vector 8. Manual — part 38

Figure 47

112864

TIMING DIAGRAMS FOR THE FOLLOWING APPLICATIONS:

DRAGON

1. Camshaft - 2. Camshaft rpm sensor - 3. Camshaft flywheel - 4. Engine flywheel -

5. Crankshaft rpm sensor fitted on the flywheel casing

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SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS

VECTOR 8 ENGINES

Base - April 2006

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Figure 48

Figure 49

Position cylinders 1 and 6 at TDC.

Fit tool 99368509 (3) on the front casing.Secure it using the
bolts (2, 5).

At TDC the pins (2) and (3) for the tool engage in the dowels
for the crankshaft and the camshaft respectively guaranteeing
the timing.

With tool 99368509 (3, Figure 48) fitted, fit the two timing
gears (6) and the spacer (5) and secure the assembly using the
bolts (4).

Fit the tool (1) 99368508 on the front casing as shown in the
diagram.

Fit the flywheel (2) so that the tool 99368508 is inserted, via
the seat for the timing sensor, on the tooth on the flywheel
(see arrow).

Proceed with tightening the bolts (3).

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113065

Method 2 (using equipment)

Flywheel timing

SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS

27

VECTOR 8 ENGINES

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Base - April 2006

Figure 50

Figure 51

Figure 52

Figure 53

Figure 54

Figure 55

PISTON—GUDGEON PIN ASSEMBLY

1. Piston — 2. Trapezoidal grommet — 3. Washer — 4. Oil

scraper ring — 5. Gudgeon pin — 6. Split rings — 7. Half

baerings — 8. Connecting rod — 9. Bush

- Check pistons for any signs of seizure, cracks or excessive

wear; if there are, replace them.

- Use pincers 99360183 (1) to remove the rings (2) from

the piston.

- Remove the piston (1) from the rod (3) by removing the

ring (2) and extracting the gudgeon pin (4).

- Measure through the micrometer (1) the piston diameter

(2) to determine the assembly play. The diameter shall be
measured at 21 mm from the piston skirt.

- The clearance between the piston (1) and cylinder liner

can be checked using a feeler (2) as shown in the above
figure.

- Measure the diameter of the gudgeon pin (1) using a

micrometer (2).

Gudgeon pins

Pistons
Measuring the piston diameter

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PISTON ROD ASSEMBLY

16821

16822

16817

37715

32618

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SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS

VECTOR 8 ENGINES

Base - April 2006

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Figure 56

Figure 57

- Lubricate the gudgeon pin (1) and its seating on the piston

with engine oil; arrange the piston so that the gudgeon pin
can be inserted into the piston with a slight thumb pressure
and does not drop out by gravity.

Conditions for correct mating of gudgeon pin
and piston

PRINCIPAL PISTON, GUDGEON PIN AND PISTON RING DATA

Piston rings

Figure 58

- Check thickness of piston rings (2) by a micrometer (1).

Figure 59

- Check the clearance between the piston rings (2) and their

seats on the piston (1) using a feeler gauge (3).

113006

36131

36133

16522

SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS

29

VECTOR 8 ENGINES

Print P2D32V001E

Base - April 2006