Engine Iveco Vector 8. Manual — part 32

2

SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS

VECTOR 8 ENGINES

Base - April 2006

Print P2D32V001E

Page

PISTON ROD ASSEMBLY

28

. . . . . . . . . . . . . . . . .

- Pistons

28

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

- Measuring the piston diameter

28

. . . . . . . . . . . .

- Gudgeon pins

28

. . . . . . . . . . . . . . . . . . . . . . . . . .

- Conditions for correct mating of gudgeon

pin and piston

29

. . . . . . . . . . . . . . . . . . . . . . . . .

- Piston rings

29

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

- Connecting rods

30

. . . . . . . . . . . . . . . . . . . . . . .

- Check of connecting rod alignment

31

. . . . . . . . .

- Fitting the connecting rod—piston assembly

31

. . .

- Connecting rod—piston mating

31

. . . . . . . . . . . .

- Fitting the piston rings

31

. . . . . . . . . . . . . . . . . . .

- Check of rod/piston alignment

32

. . . . . . . . . . . . .

- Fitting the rod—piston assemblies

into the cylinder liners

32

. . . . . . . . . . . . . . . . . . .

- Measuring the mounting clearance of big end pins 33

- Fitting the connecting rod caps

33

. . . . . . . . . . . .

- Check of piston protrusion

33

. . . . . . . . . . . . . . .

CYLINDER HEAD

34

. . . . . . . . . . . . . . . . . . . . . . . .

- Hydraulic leak test

34

. . . . . . . . . . . . . . . . . . . . . .

- Dismantling valves

34

. . . . . . . . . . . . . . . . . . . . . .

- Checking the cylinder head support surface

34

. .

VALVE

34

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

- Removing carbon deposits, and checking the valves 34

- Refacing the valves

35

. . . . . . . . . . . . . . . . . . . . . .

- Checking valve centering

35

. . . . . . . . . . . . . . . . .

- Checking clearance between valve stem

35

. . . . .

VALVE GUIDES

35

. . . . . . . . . . . . . . . . . . . . . . . . . .

- Replacing the valve guides

36

. . . . . . . . . . . . . . . .

- Reaming the valve guides

36

. . . . . . . . . . . . . . . . .

- Replacing and regrinding the valve seats

36

. . . . .

Page

REPLACING THE INJECTOR—HOLDER CASES

37

- Fitting the valves

38

. . . . . . . . . . . . . . . . . . . . . . .

- Installing the cylinder head

38

. . . . . . . . . . . . . . . .

TIGHTENING TORQUE

39

. . . . . . . . . . . . . . . . . .

SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS

3

VECTOR 8 ENGINES

Print P2D32V001E

Base - April 2006

GENERAL SPECIFICATIONS

Type

VECTOR 8

Cycle

Four-stroke diesel engine

Power

Supercharged with intercooler

Injection

Direct

Number of cylinders

8 in two banks at 90˚

∅

Bore

mm

145

Stroke

mm

152

+

+

+.. =

Total displacement

cm

3

20.080

TIMING

start before T.D.C.

A

end after B.D.C.

B

16º
25º

start before B.D.C.

D

end after T.D.C.

C

66º
15º

X

Checking timing

mm

X

mm

Checking operation

mm

X

mm

-

-

0.5

0.5

FUEL FEED

Injection
Type:

Bosch

high pressure common rail

Control unit ADEM III

Nozzle type

Injectors

Injection sequence

1 - 3 - 7 - 2 - 6 - 5 - 4 - 8

bar

Injection pressure

bar

Variable up to 1600 bar, controlled by the ECU.

The safety valve cuts in at 1850 bar.

4

SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS

VECTOR 8 ENGINES

Base - April 2006

Print P2D32V001E

ASSEMBLY CLEARANCE DATA

Type

VECTOR 8

CYLINDER BLOCK AND CRANK
MECHANISM COMPONENTS

mm

∅1

Cylinder liners

∅ 1

164 000

÷ 164 025

Cylinder liners

∅ 1

164.000

÷ 164.025

Cylinder liners:

L

outside diameter

∅

length

L

164.003

÷ 164.028

266.5

÷ 267.5

∅2

Cylinder sleeve —
crankcase seats
(interference)

0.028

÷ 0.022

Outside diameter

∅2

—

Cylinder liners

∅3

X

Cylinder liner position

X

on crankcase

X

0.025

÷ 0.095

inside diameter

∅ 3

145.00

÷ 145.03

∅1

Pistons:

∅1

X

measuring dimension X

25

∅ 2

outside diameter

∅ 1

144.825

÷ 144.870

outside diameter

∅ 2

62.000

÷ 62.008

Piston — cylinder liners

0.261

÷ 0.309

Piston diameter

∅ 1

_

X

Pistons position from
crankcase

X

0.19

÷ 0.59

3

∅

Gudgeon pin

∅ 3

61.982

÷ 61.990

Gudgeon pin — pin housing

0.010

÷ 0.026

SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS

5

VECTOR 8 ENGINES

Print P2D32V001E

Base - April 2006

VECTOR 8

Type

VECTOR 8

Type

mm

1

X

Type of piston

X1*

3.440

÷ 3.470

X

1

2

X

Piston ring slots

X 2

3.060

÷ 3.080

X

3

2

X

X3

6.030

÷ 6.050

3

X

*measured on

∅ of 140 mm

1

S

S1*

3 330

÷ 3 296

1
2

S
S

S1*

Piston rings

S2

3.330

÷ 3.296

2.975

÷ 2.990

3

S

Piston rings

S2
S3

2.975

÷ 2.990

5.975

÷ 5.990

*measured on

∅ of 140 mm

1

0.110

÷ 0.174

Piston rings — slots

2

0.070

÷ 0.105

3

0.040

÷ 0.075

Piston rings

_

X1

2

X

Piston ring end opening in
cylinder liners:

3

2

X

X

X1

0.50

÷ 0.65

3

X

X2

0.90

÷ 1.15

X3

0.40

÷ 0.70

1

∅

Small end bushing seat

∅ 1

67.994

÷ 67.963

∅ 2

Big end bearing
seat

∅2

110.000

÷ 110.022

∅

∅4

Small end bushing diameter

∅3

outside

∅4

68.080

÷ 68.120

inside

∅ 3

62.015

÷ 62.030

S

Big

end

bearing

shell

supplied as spares

S

2.466

÷ 2.478

Small end bush — seat

0.086

÷ 0.157

Gudgeon pin — bushing

0,056

÷ 0.080

Big end bearing shells

—