Iveco EuroCargo (12 to 26 t). Manual — part 9
E
URO
C
ARGO
T
ECTOR
12-26 t
26
ENGINE F4 AE 0481
Base - February 2003
F4AE0481A
(.17)
CYLINDER UNIT AND CRANKSHAFT COMPONENTS
mm
X
Size
X
Max. tolerance
on connecting rod
axis alignment
-
-
1
2
∅
∅
S 1
S 2
Journals
∅ 1
Crankpins
∅ 2
Main half bearings
S 1
Big end half bearings
S 2
*provided as spare part
82.99
÷ 83.01
68.997
÷ 69.013
2.456
÷ 2.464
1.955
÷ 1.968
3
∅
Main bearings
No. 1-3-4-5
∅ 3
No. 2
∅ 3
87.982
÷ 88.008
87.982
÷ 88.008
Half bearings — Journals
No. 1-3-4-5
No. 2
0.041
÷ 0.103
0.041
÷ 0.103
Half bearings - Crankpins
0.033
÷ 0.041
Main half bearings
Big end half bearings
0.250 ; 0.500
1
X
Shoulder journal
X 1
37.475
÷ 37.545
X 2
Shoulder main bearing
X 2
32.23
X 3
Shoulder half-rings
X 3
32.30
Output shaft shoulder
0.07
E
URO
C
ARGO
T
ECTOR
12-26 t
ENGINE F4 AE 0481
27
Base - February 2003
F4AE0481A
(.17)
CYLINDER HEAD — TIMING SYSTEM
mm
∅ 1
Valve guide seats on
cylinder head
∅ 1
7.042
÷ 7.062
∅
α
4
Valves:
∅ 2
α
∅ 2
α
6.970
÷ 6.990
60
o
± 0.25
o
6.970
÷ 6.990
45
o
± 0.25
o
Valve stem and guide
0.052
÷ 0.092
∅ 1
Housing on head for
valve seat:
∅1
∅1
34.837
÷ 34.863
34.837
÷ 34.863
α
2
∅
Valve seat outside diameter;
valve seat angle on cylinder
head:
∅ 2
α
∅ 2
α
34.917
÷ 34.931
60
o
34.917
÷ 34.931
45
o
X
X
Sinking
X
0.59
÷ 1.11
0.96
÷ 1.48
Between valve seat
and head
0.054
÷ 0.094
0.054
÷ 0.094
Valve seats
-
E
URO
C
ARGO
T
ECTOR
12-26 t
28
ENGINE F4 AE 0481
Base - February 2003
F4AE0481A
(.17)
CYLINDER HEAD — TIMING SYSTEM
mm
H
H 1
H 2
Valve spring height:
free spring
H
under a load equal to:
339.8
± 19 N
H1
741
± 39 N
H2
47.75
35.33
25.2
X
Injector protrusion
X
It cannot be adjusted
∅
∅
∅
1 2 3 4
5
Camshaft bush
housings No. 1-5
Camshaft housings
No. 2-3-4
59.222
÷ 59.248
59.222
÷ 59.248
∅
∅
∅
1
2
3
Camshaft journals:
1
⇒ 5
∅ 1-2-3
53.995
÷ 54.045
∅
Camshaft bush outside
diameter with a load
of 3.3 kN:
∅
59,222
÷ 59,248
∅
Bush inside diameter
after ramming
∅
54.083
÷ 54.147
Bushes and housings
on block
0,113
÷ 0,165
Bushes and journals
0.038
÷ 0.152
H
Cam lift:
H
H
6.045
7.582
E
URO
C
ARGO
T
ECTOR
12-26 t
ENGINE F4 AE 0481
29
Base - February 2003
F4AE0481A
(.17)
CYLINDER HEAD — TIMING SYSTEM
mm
∅1
Tappet cap housing
on block
∅ 1
16.000
÷ 16.030
∅2
3
∅
∅
2
Tappet cap outside
diameter:
∅ 2
∅ 3
15.924
÷ 15.954
15.960
÷ 15.975
Between tappets and housings
0.025
÷ 0.070
Tappets
-
∅ 1
Rocker shaft
∅ 1
21.965
÷ 21.977
∅ 2
Rockers
∅ 2
22.001
÷ 22.027
Between rockers and shaft
0.024
÷ 0.162
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