Engine Iveco C10/C13/C78/Cursor 13/Cursor 78. Instruction - page 62
6
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
F3A
Type
F3A
Type
mm
1
X
NUERAL
MAHLE - PISTON
X
1
2
X
X1*
*
3.225
2.955 to 2.985
X2
Piston ring grooves
X2
3.05 to 3.07
3
X
X3
* measured on
∅ of 120 mm
4.02 to 4.04
Piston rings:
trapezoidal seal
S1*
2.796 to 2.830
1
2
S
S
p
lune seal
S2
ill d
i
2.796 to 2.830
2.970 to 3.000
3
2
S
S
milled scraper ring
with slits and internal
spring
S3
3 970 to 3 990
spring
S3
* measured on
∅ of 120 mm
3.970 to 3.990
1
0.3950 to 0.429
0.125 to 0.189
Piston rings - grooves
2
0.050 to 0.100
3
0.030 to 0.070
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
0.60 to 0.75
X3
0.35 to 0.65
1
∅
Small end bush housing
Ø1
54.000 to 54.030
∅ 2
Big end bearing
housing
Ø2
1
Selection classes
2
3
{
87.000 to 87.030
87.000 to 87.010
87.011 to 87.020
87.021 to 87.030
∅4
Small end bush diameter
∅
outside
∅4
54.085 to 54.110
∅3
inside
∅3
50.019 to 50.035
S
Big end bearing shell
S
Red
Green
Yellow D
1.970 to 1.980
1.981 to 1.990
1.991 to 2.000
Small end bush - housing
0.055 to 0.110
Piston pin - bush
0.019 to 0.041
Big end bearing
0.127 - 0.254 - 0.508
Connecting rod weight
g
A
4024 to 4054
Class
B
4055 to 4085
C
4086 to 4116
D
Fitted in production only and not supplied as spares
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
7
Type
F3A
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
92.970 to 93.000
92.970 to 92.979
92.980 to 92.989
92.990 to 93.000
82.970 to 83.000
82.970 to 82.979
82.980 to 82.989
82.990 to 83.000
S 1
S 2
Main bearing shells
S1
Red
Green
Yellow*
2.965 to 2.974
2.975 to 2.984
2.985 to 2.995
Big end bearing shells
S2
Red
Green
Yellow*
1.970 to 1.980
1.981 to 1.990
1.991 to 2.000
3
∅
Main bearing housings
∅3
- nominal
- class
1
- class
2
- class
3
99.000 to 99.030
99.000 to 99.009
99.010 to 99.019
99.020 to 99.030
Bearing shells -
main journals
0.050 to 0.090
Bearing shells -
big ends
0.040 to 0.080
Main bearing shells
0.127 - 2.254 - 0.508
Big end bearing shells
0.127 - 2.254 - 0.508
X1
Main journal,
thrust bearing
X1
45.95 to 46.00
X2
Main bearing housing,
thrust bearing
X2
38.94 to 38.99
X 3
Thrust washer
halves
X3
3.38 to 3.43
Crankshaft end float
0.10 to 0.30
1
2
Alignment
1 - 2
Ovalization
1 - 2
Taper
1 - 2
≤ 0.025
-
0.010
0.010
*
Fitted in production only and not supplied as spares
8
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
Type
F3A
CYLINDER HEAD - VALVE TRAIN
mm
∅ 1
Valve guide housings
in cylinder head
∅1
14.980 to 14.997
2
∅
Valve guide
∅2
9.015 to 9.030
∅ 3
Valve guide
∅2
∅3
15.012 to 15.025
Valve guides - housings
in the cylinder heads
0.015 to 0.045
Valve guide
0.2 - 0.4
∅ 4
Valves:
∅4
α
8.960 to 8.975
60
° 30′ ± 7′ 30″
α
∅4
α
8.960 to 8.975
45
° 30’ ± 7′ 30″
Valve stem and its guide
0.040 to 0.070
Valve seat in
head
head
∅1
44.185 to 44.220
∅ 1
∅1
∅1
42.985 to 43.020
Outside diameter of valve
2
∅
Outside diameter of valve
seat; angle of valve seat
in cylinder head:
∅2
44.260 to 44.275
∅2
α
60
° - 30’
α
α
∅2
43.060 to 43.075
∅2
α
45
° - 30′
X
Recessing of valve
0.65 to 0.95
X
Recessing of valve
X
1.8 to 2.1
Between valve
Between valve
seat and head
0.040 to 0.090
0.040 to 0.090
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
9
Table 1
Type
F3A
Type
mm
Valve spring height:
free height
H
76
H
H 1
2
under a load of:
H 1
H 2 N 500 ±25
H1
62
N 972
±48
H2
48.8
X
Injector protrusion
X
0.14 to 1.4
∅
∅
∅
Camshaft bushing housing
in the cylinder head:
1
⇒ 7
Ø
88.000 to 88.030
∅
∅
∅
1
2
3
Camshaft bearing
journals:
1
⇒ 7
Ø
82.950 to 82.968
∅
Outer diameter of
camshaft bushings:
∅
88.153 to 88.183
∅
Inner diameter of
camshaft bushings:
∅
83.018 to 83.085
Bushings and housings
in the cylinder head
0.123 to 0.183
Bushings and bearing
journals
0.050 to 0.135
Cam lift:
9.30
H
9.45
11.21
∅ 1
Rocker shaft
∅1
41.984 to 42.000