Engine Iveco C10/C13/C78/Cursor 13/Cursor 78. Manual — part 22
6
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
F2B
Type
F2B
Type
mm
1
X
X1*
2.71 to 2.74
X
1
2
X
Piston ring grooves
X2
2.55 to 2.57
X
3
2
X
X3
4.02 to 4.04
3
X
*measured on
∅ of 112 mm
Piston rings:
trapezoidal seal
S1*
2.575 to 2.595
2 470 t 2 490
1
2
S
S
p
lune seal
S2
milled scraper rin
2.470 to 2.490
3
S
milled scraper ring
with slits and internal
spring
S3
3 975 to 3 990
spring
S3
*measured on
∅ of 112 mm
3.975 to 3.990
1
0.115 to 0.165
Piston rings -
grooves
2
0.060 to 0.100
3
0.030 to 0.065
Piston rings
_
X1
2
X
Piston ring end gap in
cylinder liners:
3
2
X
X
X1
0.35 to 0.50
3
X
X2
0.70 to 0.95
X3
0.30 to 0.60
1
∅
Small end bush housing
Ø1
49.975 to 50.000
1
∅
∅
2
Big end bearing
housing
Ø2
1
Selection classes Ø2
2
3
77.000 to 77.030
77.000 to 77.010
77.010 to 77.020
77.020 to 77.030
∅
4
Small end bush diameter
∅
3
outside
∅4
50.055 to 50.080
∅
3
inside
∅3
46.015 to 46.030
S
Big end bearing shell
S
Red
Green
YellowD
2.000 to 2.010
2.011 to 2.020
2.021 to 2.030
Small end bush - housing
0.055 to 0.105
Piston pin - bush
0.015 to 0.036
Big end bearing shells
0.127 - 0.254 - 0.508
Connecting rod weight
g.
A
2865 to 2895
Class
B
2896 to 2925
C
2926 to 2955
D
Fitted in production only and not supplied as spares
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
7
Type
F2B
Type
mm
X
Measuring dimension
X
125
Max. connecting rod
axis misalignment
tolerance
0.08
1
2
∅
∅
Main journals
∅1
- nominal
- class
1
- class
2
- class
3
Crankpins
∅2
- nominal
- class
1
- class
2
- class
3
82.910 to 82.940
82.910 to 82.919
82.920 to 82.929
82.930 to 82.940
72.915 to 72.945
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
YellowD
3.000 to 3.010
3.011 to 3.020
3.021 to 3.030
Big end bearing shells
S2
Red
Green
YellowD
2.000 to 2.010
2.011 to 2.020
2.021 to 2.030
3
∅
Main bearing housings
∅3
- nominal
- class
1
- class
2
- class
3
89.000 to 89.030
89.000 to 89.009
89.010 to 89.019
89.020 to 89.030
Bearing shells -
main journals
f
0.040 to 0.098 * - 0.040 to 0.0110 **
Bearing shells -
big ends
f
0.035 to 0.093 * - 0.035 to 0.083 **
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 40.04
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 0.34
1
2
Alignment
1 - 2
Ovality
1 - 2
Taper
1 - 2
≤ 0.05
_0.010
0.010
D
Fitted in production only and not supplied as spares
f
Spares provided: : * = standard spares - 0.127; ** = 0.254 - 0.508
8
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
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:
∅
Valves:
∅ 4
7.970 to 8.985
∅ 4
α
60
° 30′ ± 7′ 30″
∅ 4
7.970 to 8.985
α
∅ 4
α
45
° + 15′
Valve stem and its guide
0.038 to 0.068
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
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
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
9
Type
F2B
mm
Valve outside spring
height:
free height
H
63.6
H
H 1
2
under a load of:
H 1
H 2 N 454 ± 22
H1
49.5
N 840
± 42
H2
37.5
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
8.82
∅
1
Rocker shaft
∅ 1
37.984 to 38.000
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