Engines Iveco C10,C13, Cursor 10, Cursor 13. Manual — part 61
8
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
F3B CURSOR ENGINES
Base - May 2007
F3B
CYLINDER HEAD - VALVE TRAIN
mm
∅ 1
Valve guide housings
in cylinder head
∅1
15.980 to 15.997
2
∅
Valve guide
∅2
10.015 to 10.030
∅ 3
Valve guide
∅2
∅3
16.012 to 16.025
Valve guides - housings
in the cylinder heads
0.015 to 0.045
Valve guide
-
∅ 4
Valves:
∅4
α
9.960 to 9.975
60
° 30′ ± 7′ 30″
α
∅4
α
9.960 to 9.975
45
° 30’ ± 7′ 30″
Valve stem and its guide
0.040 to 0.070
Valve seat in
head
head
∅1
49.185 to 49.220
∅ 1
∅1
46.985 to 47.020
Outside diameter of valve
2
∅
Outside diameter of valve
seat; angle of valve seat
in cylinder head:
∅2
49.260 to 49.275
∅2
α
60
° - 30’
α
α
∅2
47.060 to 47.075
∅2
α
45
° - 30′
X
Recessing of valve
0.54 to 0.85
X
Recessing of valve
X
1.75 to 2.05
Between valve
Between valve
seat and head
0.040 to 0.090
0.040 to 0.090
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
9
F3B CURSOR ENGINES
Table 2
Type
F3B
Type
mm
Valve spring height:
free height
H
73.40
H
H 1
2
under a load of:
H 1
H 2 575 ± 28 N
H1
59
1095
± 54 N
H2
45
X
Injector protrusion
X
0.53 to 1.34
∅
∅
∅
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
9.30
11.216
∅ 1
Rocker shaft
∅1
41.984 to 42.000
10
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
F3B CURSOR ENGINES
Base - May 2007
F3B
Type
mm
Bushing housing in
rocker arms
45.000 to 45.016
59.000 to 59.019
∅
46.000 to 46.016
Bushing outer diameter
for rocker arms
45.090 to 45.130
∅
59.100 to 59.140
46.066 to 46.091
Bushing inner diameter
for rocker arms
42.025 to 42.041
∅
56.030 to 56.049
42.015 to 42.071
Between bushings and
housings
0.074 to 0.130
0.081 to 0.140
0.050 to 0.091
Between bushings of
rocker arms and shaft
0.025 to 0.057
0.025 to 0.057
0.015 to 0.087
TURBOCHARGER
Type
HOLSET HX55
End float
-
Radial play
-
47576
47571
47570
By means of proper and splined wrenches, untighten the
screws (1) and (2) and remove the under-block (3).
Remove the crankshaft (2) with tool 99360500 (1).
Remove the crankshaft half-bearings (1), untighten the
screws and remove oil spray nozzles (2).
Take down cylinder liners as specified in the relative
paragraph on page 14.
After disassembling the engine, thoroughly clean
disassembled parts and check their integrity.
Instructions for main checks and measures are
given in the following pages, in order to determine
whether the parts can be re-used.
Untighten screws (2) fixing the connecting rod cap (3) and
remove it. Remove the connecting rod-piston assembly from
the upper side. Repeat these operations for the other pistons.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Rotate the block (1) to the vertical position.
47575
47574
ENGINE OVERHAUL
ENGINE REMOVAL AT THE BENCH
The
following
instructions
are
prescribed
on
the
understanding that the engine has previously been placed on
the rotating bench and that removal of all specific
components of the equipment have been already removed
as well. (See Section 3 of the manual herein).
The section illustrates therefore all the most important
engine overhaul procedures.
Note down the assembly position of the top and
bottom main bearing shells since, if reusing them, they
will need to be fitted in the position found upon
removal.
NOTE
NOTE
Keep the big end bearing shells in their respective
housings and/or note down their assembly position
since, if reusing them, they will need to be fitted in
the position found upon removal.
NOTE
The screws of the connecting rod wires must be
used again up to when the diameter of the
threading (d) measured in zone (L) is not less than
13.4 mm. Otherwise replace the screw.
Before assembly lubricated screw threading with
engine oil.
NOTE
117694
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
11
F3B CURSOR ENGINES
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