Engines Iveco N45, N67. Manual — part 23
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
5
F4HE NEF ENGINES
Print P2D32N003GB
Base - February 2006
Type
4 CYLINDERS
6 CYLINDERS
CYLINDER UNIT AND CRANKSHAFT COMPONENTS
mm
X
1
3
2
X
X
X1*
Split ring slots
X 2
X 3
2.705 to 2.735
2.440 to 2.460
4.030 to 4.050
1
3
2
S
S
S
S 1*
Split rings
S 2
S 3
* measured on 98 mm
∅ 4 cyl.
* measured on 99 mm
∅ 6 cyl.
* measured on 101 mm
∅ F4HE
2.560 to 2.605
2.350 to 2.380
3.977 to 3.990
1
Split rings - slots
2
3
0.100 to 0.175
0.060 to 0.110
0.040 to 0.083
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 to 0.40
0.60 to 0.80
0.30 to 0.55
1
∅
∅ 2
Small end bush
housing
∅ 1
Big end bearing
housing
∅ 2
40.987 to 41.013
72.987 to 73.013
∅
S
∅ 4
3
Small end bush diameter
Outside
∅ 4
Inside
∅ 3
Spare big end half
bearings
S
41.279 to 41.553
38.019 to 38.033
1.955 to 1.968
Small end bush — housing
0.266 to 0.566
Piston pin — bush
0.019 to 0.039
Big end half bearings
0.250 to 0.500
6
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
F4HE NEF ENGINES
Base - February 2006
Print P2D32N00GB
Type
4 CYLINDERS
6 CYLINDERS
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 to 83.01
68.987 to 69.013
2.456 to 2.464
1.955 to 1.968
3
∅
Main bearings
No. 1 — 5 / 1- 7
∅ 3
No. 2 — 3 — 4
∅ 3
87.982 to 88.008
87.977 to 88.013
Half bearings — Journals
No. 1—5 / 1-7
No. 2—3—4 / 2-3-4-5-6
0.041 to 0.119
0.041 to 0.103
Half bearings - Crankpins
0.033 to 0.041
Main half bearings
Big end half bearings
0.250 to 0.500
1
X
Shoulder journal
X 1
37.475 to 37.545
X 2
Shoulder main bearing
X 2
25.98 to 26.48
X 3
Shoulder half-rings
X 3
37.28 to 37.38
Output shaft shoulder
0.068 to 0.41
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
7
F4HE NEF ENGINES
Print P2D32N003GB
Base - February 2006
Type
4 CYLINDERS
6 CYLINDERS
CYLINDER HEAD — TIMING SYSTEM
mm
∅ 1
Valve guide seats on
cylinder head
∅ 1
7.042 to 7.062
2
∅
∅ 3
∅ 2
Valve guides
∅ 3
-
-
Valve guides and seats on head
-
Valve guides
-
∅
α
4
Valves:
∅ 4
α
∅ 4
α
6.970 to 6.999
60
o
± 0.25
o
6.970 to 6.999
45
o
± 0.25
o
Valve stem and guide
0.052 to 0.092
0.052 to 0.092
∅ 1
Housing on head for
valve seat:
∅1
∅1
34.837 to 34.863
34.837 to 34.863
α
2
∅
Valve seat outside diameter;
valve seat angle on cylinder
head:
∅ 2
α
∅ 2
α
34.917 to 34.931
60
o
34.917 to 34.931
45
o
X
X
Sinking
X
0.59 to 1.11
0.96 to 1.48
Between valve seat
and head
0.054 to 0.094
0.054 to 0.094
Valve seats
-
8
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
F4HE NEF ENGINES
Base - February 2006
Print P2D32N00GB
Type
4 CYLINDERS
6 CYLINDERS
CYLINDER HEAD — TIMING SYSTEM
mm
H
H 1
H 2
Valve spring height:
free spring
H
under a load equal to:
339.8
± 9 N
H1
741
± 39 N
H2
47.75
35.33
25.2
X
Injector protrusion
X
-
∅
∅
∅
1 2 3 4
5
Camshaft bush
housings No. 1-5/1-7
Camshaft housings
No. 2-3-4/2-3-4-5-6
59.222 to 59.248
54.089 to 54.139
∅
∅
∅
1
2
3
Camshaft journals:
1
⇒ 5
∅
1
⇒ 7
∅
53.995 to 54.045
53.995 to 54.045
∅
Camshaft bush outside
diameter:
∅
-
∅
Bush inside
diameter
∅
54.083 to 54.147
Bushes and housings
on block
-
Bushes and journals
0.038 to 0.162
H
Cam lift:
H
H
6.045
7.582
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