Iveco EuroCargo (12 to 26 t). Manual — part 30
E
URO
C
ARGO
T
ECTOR
12-26 t
120
ENGINE F4 AE 0681
Base - February 2003
Type
F4AE0681E
(.18)
F4AE0681D
(.21)
F4AE0681B
(.24)
F4AE0681A
(.28)
CYLINDER UNIT AND CRANKSHAFT COMPONENTS
mm
∅1
X
Cylinder barrels:
∅ 1
102.009
÷ 102.031
∅ 1
X
Spare pistons:
type:
X
2
Size
X
60.5
∅
2
Outside diameter
∅ 1
Pin housing
∅ 2
101.721
÷ 101.739
40.010
÷ 40.016
101.781
÷ 101.799
40.008
÷ 40.014
Piston — cylinder barrels
0.260
÷ 0.300
Piston diameter
∅ 1
0.5
X
Piston protrusion
X
0.28
÷ 0.52
3
∅
Piston pin
∅ 3
39.9938
÷ 40.0002
Piston pin — pin housing
0.0098
÷ 0.0222
0.0078
÷ 0.0202
s
E
URO
C
ARGO
T
ECTOR
12-26 t
ENGINE F4 AE 0681
121
Base - February 2003
F4AE0681E
(.18)
F4AE0681D
(.21)
F4AE0681B
(.24)
F4AE0681A
(.28)
CYLINDER UNIT AND CRANKSHAFT COMPONENTS
mm
1
X
X 1*
2.705
÷ 2.735
X
1
3
2
X
X
Split ring slots
X 2
X 3
* measured on 99 mm
∅
2.430
÷ 2.450
4.040
÷ 4.060
2.420
÷ 2.440
4.020
÷ 4.040
1
3
2
S
S
S
S 1*
Split rings
S 2
S 3
* measured on 99 mm
∅
2.560
÷ 2.605
2.350
÷ 2,380
3.975
÷ 4.000
1
0.100
÷ 0.175
Split rings - slots
2
3
0.050
÷ 0.100
0.040
÷ 0.085
0.040
÷ 0.090
0.020
÷ 0.065
Split rings
0.5
X 1
3
2
X
X
Split ring end opening in cylinder
barrel:
X 1
X 2
X 3
0.30
÷ 0.40
0.60
÷ 0.80
0.25
÷ 0.55
1
∅
∅ 2
Small end bush housing
∅ 1
Big and bearing
housing
∅ 2
42.987
÷ 43.013
72.987
÷ 73.013
∅
S
∅ 4
3
Small end bush diameter
Outside
∅ 4
Inside
∅ 3
Spare big end half
bearings
S
43.279
÷ 43.553
40.019
÷ 40.033
1.955
÷ 1.968
Small end bush — housing
0.266
÷ 0.566
Piston pin - bush
0.0188
÷ 0.0392
Big end half bearings
-
E
URO
C
ARGO
T
ECTOR
12-26 t
122
ENGINE F4 AE 0681
Base - February 2003
F4AE0681E
(.18)
F4AE0681D
(.21)
F4AE0681B
(.24)
F4AE0681A
(.28)
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
82.993
÷ 83.013
68.987
÷ 69.013
2.456
÷ 2.464
1.955
÷ 1.968
3
∅
Main bearings
No. 1—3—4-5- 6-7
∅ 3
No. 2
∅ 3
87.982
÷ 88.008
87.982
÷ 88.008
Half bearings — Journals
No. 1—3—4-5- 6-7
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 0681
123
Base - February 2003
F4AE0681E
(.18)
F4AE0681D
(.21)
F4AE0681B
(.24)
F4AE0681A
(.28)
CYLINDER HEAD — TIMING SYSTEM
mm
∅ 1
Valve guide seats on
cylinder head
∅ 1
7.042
÷ 7.062
∅
α
2
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
-
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