Engines Iveco C87 / Cursor 87. Manual — part 41
8
SECTION 2 - G-DRIVE APPLICATION
CURSOR ENGINES G-DRIVE
Base - June 2007
F2C
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 92.980
92.980 to 92.990
92.990 to 93.000
81.915 to 81.945
81.915 to 81.925
81.925 to 81.935
81.935 to 81.945
S 1
S 2
Main bearing shells
S1
Red
Green
Yellow*
2.968 to 2.978
2.978 to 2.988
2.988 to 2.998
Big end bearing shells
S2
Red
Green
Yellow*
1.994 to 2.002
2.002 to 2.010
2.010 to 2.018
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
39.96 to 40.04
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
-
0.04
-
*
Fitted in production only and not supplied as spares
9
CURSOR ENGINES G-DRIVE
SECTION 2 - G-DRIVE APPLICATION
Base - June 2007
F2C
CYLINDER HEAD - VALVE TRAIN
mm
∅ 1
Valve guide housings
in cylinder head
∅1
12.9800 to 12.997
2
∅
Valve guide
∅2
8.023 to 8.038
∅ 3
Valve guide
∅2
∅3
8.023 to 8.038
13.012 to 13.025
Valve guides - housings
in the cylinder heads
0.015 to 0.045
Valve guide
0.2 - 0.4
∅ 4
Valves:
∅4
7 970 to 7 985
∅4
α
∅4
7.970 to 7.985
60
° 30′ ± 7′ 30″
7 970
7 985
α
∅4
α
7.970 to 7.985
45
°
+15
-0
+15’
-0’
Valve stem and its guide
0.040 to 0.070
Valve seat in
head
head
∅1
41.985 to 42.020
∅ 1
∅1
41.985 to 42.020
40.985 to 41.020
2
∅
Outside diameter of valve
seat; angle of valve seat
2
∅
seat; angle of valve seat
in cylinder head:
0’
0 5’
∅2
α
42.060 to 42.075
60
° 30′
0
-0,5’
α
α
∅2
60
° - 30′
41 060 t 41 075
0’
-0,5’
α
∅2
α
41.060 to 41.075
45
° - 30’
X
Recessing of valve
0.5 to 0.8
X
Recessing of valve
X
1.6 to 1.9
Between valve
Between valve
seat and head
0.040 to 0.090
10
SECTION 2 - G-DRIVE APPLICATION
CURSOR ENGINES G-DRIVE
Base - June 2007
Type
F2C
Type
mm
Valve spring height:
A
B
free height
H
70.77
-
H
under a load of:
H
H 1
H 2
N 460
± 23
H1A
N 460
22
H1B
{
51
H 2 N 460
± 22
H1B
{
51
N 740
± 33
H2A
N 731 4
42
H2B
{
39
N 731,4
± 42
H2B
{
39
X
Injector protrusion
X
1.2 to 1.5
∅
∅
∅
Camshaft bushing housing
in the cylinder head:
1
⇒ 7
Ø
69.000 to 69.030
∅
∅
∅
1
2
3
Camshaft bearing
journals:
1
⇒ 7
Ø
64.924 to 64.080
∅
Outer diameter of
camshaft bushings:
∅
69.090 to 69.130
∅
Inner diameter of
camshaft bushings:
∅
65.080 to 65.116
Bushings and housings
in the cylinder head
0.060 to 0.130
Bushings and bearing
journals
0.100 to 0.192
Cam lift:
H
7.4034
8.2108
∅ 1
Rocker shaft
∅1
31.964 to 31.980
11
CURSOR ENGINES G-DRIVE
SECTION 2 - G-DRIVE APPLICATION
Base - June 2007
F2C
Type
mm
Bushing housing in
rocker arms
32.025 to 32.041
∅
32.025 to 32.041
Between bushings and
housings
0.045 to 0.077
0.045 to 0.077
TURBOCHARGER
Type
HX55
0.025 to 0.127
End float
0.025 to 0.127
0.025 to 0.127
0 406 t 0 127
Radial play
0.406 to 0.127
0.330 to 0.508
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