Iveco Stralis AT/AD. Manual - part 8

18

ENGINE F2B

S

TRALIS

AT/AD

Base - January 2003

F2B

Type

mm

X

Measuring dimension X

125

Max. connecting rod
axis misalignment
tolerance

0.08

Main journals

∅ 1 Rated value

82.910 to 82.940

1

Selection class

2
3

82.910 to 82.919
82.920 to 82.929
82.930 to 82.940

1

2

∅

∅

Crankpins

∅ 2 Rated value

72.915 to 72.945

1

2

∅

∅

1

Selection class

2
3

72.915 to 72.924
72.925 to 72.934
72.935 to 72.945

S 1

S 2

Main bearing
shells

S1

Red
Green
Yellow D

3.000 to 3.010
3.011 to 3.020
3.021 to 3.030

Big end bearing
shells

S2

Red
Green
Yellow D

2.000 to 2.010
2.011 to 2.020
2.021 to 2.030

Main bearing housings

∅ 3 Rated value

89.000 to 89.030

3

∅

1

Selection class

2
3

89.000 to 89.009
89.010 to 89.019
89.020 to 89.030

Bearing shells -
main journals

0.040 to 0.080

Bearing shells -
big ends

0.035 to 0.075

Main bearing shells

0.127 - 0.254 - 0.508

Big end bearing shells

0.127 - 0.254 - 0.508

X1

Main journal,
thrust bearing

X1

39.96 to 40.00

X2

Main bearing housing,
thrust bearing

X2

32.94 to 32.99

X 3

Thrust washer
halves

X3

3.38 to 3.43

Driving shaft shoulder

0.11 to 0.30

1

2

1

Alignment

2

Ovality

1 - 2

Taper

1 - 2

≤ 0.05

_

0.010

0.010

D

Fitted in production only and not supplied as spares

ENGINE F2B

19

S

TRALIS

AT/AD

11

Type

F2B

CYLINDER HEADS - VALVE TRAIN

mm

∅ 1

Valve guide housings
in cylinder head

∅1

12.980 to 12.997

2

∅

∅ 2

8.023 to 8.038

∅ 3

∅ 2

Valve guide

∅ 3

13.012 to 13.025

Valve guides - housings
in the cylinder heads

0.015 to 0.045

Valve guide

_

∅ 4

Valves:

∅ 4

Valves:

∅ 4

7.985 to 8.000

∅ 4

α

60

° 30′ ± 7′ 30″

∅ 4

7.985 to 8.000

α

∅ 4

α

45

° + 15′

Valve stem and its guide

0.023 to 0.053

Housing in head for valve
seat

seat

∅1

41.985 to 42.020

∅ 1

∅1

40.985 to 41.020

Outside diameter of valve

2

∅

Outside diameter of valve
seat; angle of valve seat in
cylinder head:

∅ 2

42.060 to 42.075

α

60

° - 30’

α

∅ 2

41.060 to 41.075

∅ 2
α

45

° - 30′

Recessing of
valve

X

0.5 to 0.8

X

valve

X

1.6 to 1.9

Between valve

Between valve
seat and head

0.040 to 0.090

20

ENGINE F2B

S

TRALIS

AT/AD

Base - January 2003

F2B

mm

Valve outside spring
height:

free height

H

62.6

H

H 1

2

under a load of:

H 1

H 2 N 454 ± 22

H1

48.5

N 840

± 42

H2

36.5

X

Injector protrusion

X

0.7

∅

∅

∅

Camshaft

bush

housing

fitted in the cylinder head:
1

⇒ 7

Ø

80.000 to 80.030

∅

∅

∅

1

2

3

Camshaft journal diameter:
1

⇒ 7

Ø

75.924 to 75.940

∅

Camshaft bushing outer
diameter:

∅

80.090 to 80.115

∅

Camshaft bushing
inner diameter:

∅

75.990 to 76.045

Bushings and housings in
engine block

0.060 to 0.115

Bushings and journals

0.050 to 0.121

Cam lift:

8.07

H

7.63

8.80 to 8.82

∅ 1

Rocker shaft

∅ 1

37.984 to 38.000

ENGINE F2B

21

S

TRALIS

AT/AD

Type

F2B

mm

Bushing housing in rocker
arms

41.000 to 41.016

53.000 to 53.019

∅

42.000 to 42.016

Bushing outer diameter
for rocker arms:

41.097 to 41.135

∅

53.105 to 53.156

42.066 to 42.091

Bushing inner diameter
for rocker arms:

38.025 to 38.041

∅

50.025 to 50.041

38.015 to 38.071

Between

bushings

and

housings

0.081 to 0.135

0.086 to 0.156

0.050 to 0.091

Between rocker arms and
shaft

0.025 to 0.057

0.225 to 0.057

0.015 to 0.087

TURBOCHARGER

Type

HOLSET, variable geometry

End float

_

Radial play

_