Engines Iveco N45, N67. Manual — part 9
2
SECTION 3 - DUTY-INDUSTRIAL APPLICATION
F4HE NEF ENGINES
Base - February 2006
Print P2D32N00GB
Page
- Fuel temperature and pressure sensor
39
. . . . . . .
- Electro-injectors
40
. . . . . . . . . . . . . . . . . . . . . . . .
- Pre-post heating resistance and contactor
41
. . . .
- Coolant temperature sensor
42
. . . . . . . . . . . . . .
- Fuel temperature sensor
43
. . . . . . . . . . . . . . . . .
- High pressure pump - pressure regulator
44
. . . .
PART THREE - TESTS - TROUBLESHOOTING
45
TESTS
47
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE FUEL SYSTEM
47
. . . . . . . . . . . . .
DESCRIPTION OF TESTS AND CHECKS
THAT CAN BE PERFORMED
47
. . . . . . . . . . . .
- Necessary equipment
47
. . . . . . . . . . . . . . . . . . .
- Low pressure supply test
48
. . . . . . . . . . . . . . . . .
- Low-Pressure Pump
49
. . . . . . . . . . . . . . . . . . . . .
- Test on the pressure relief valve on the rail
50
. . .
- Test on fuel backflow from the return
51
. . . . . . .
TROUBLESHOOTING
53
. . . . . . . . . . . . . . . . . . . .
PART FOUR -
MAINTENANCE PLANNING
55
. . . . . . . . . . .
Page
MAINTENANCE PLANNING
57
. . . . . . . . . . . . . .
- Recovery
57
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Regular maintenance and inspection planning
57
.
- Checks not included in maintenance
planning-daily checks
58
. . . . . . . . . . . . . . . . . . . .
MAINTENANCE PROCEDURES
58
. . . . . . . . . . . .
- Checks and inspections
58
. . . . . . . . . . . . . . . . . .
- Engine oil level check
58
. . . . . . . . . . . . . . . .
- Combustion system inspection
59
. . . . . . . .
- Cooling system inspection
59
. . . . . . . . . . . .
- Lubricating system inspection
59
. . . . . . . . .
- Inspection of water presence within
fuel filter or pre-filter
59
. . . . . . . . . . . . . . . .
- Inspection/replacement of blow-by filter
60
.
- Inspection of drive belt tensioning
60
. . . . . .
- Inspection and setting of tappet clearance
60
- Oil motor and filter replacement
61
. . . . . . .
- Fuel filter replacement
62
. . . . . . . . . . . . . . .
- Alternator belt replacement
62
. . . . . . . . . . .
Figure 1
GENERAL SPECIFICATIONS
Section pictures of complete engine - common rail version
The NEF F4HE engines are characterised by four-stroke diesel
cycles supercharged with 4 or 6 cylinders with 4 valves per
cylinder.
They have high pressure injection fuelling (common rail) and
are entirely electronically driven in order to optimise the
working process in accordance to the operation, limiting as
much as possible the pollution emissions and consumption.
The section herein described is composed or four sections:
- Section of mechanical overhaul prescribed in accordance
to the engine’s specific duty, illustrating all necessary
operation to remove and assembly the external
components of the engine, including cylinder heads,
gearbox of the timing system and of the front part cover;
- Electrical section, describing the connections to the
different components of the engine control module and
of the sensors assembled to the engine;
- Diagnosis section;
- Section of preventive maintenance operations, providing
instructions for the execution of the main operations.
!
Data, features and performances are valid only if the
setter fully complies with all the installation
prescriptions provided by Iveco Motors.
Furthermore, the users assembled by the setter shall
always be in conformance to couple, power and
number of turns based on which the engine has been
designed.
108540
SECTION 3 - DUTY-INDUSTRIAL APPLICATION
3
F4HE NEF ENGINES
Print P2D32N003GB
Base - February 2006
!
Data, features and performances are valid only if the technician fully complies with all the installation requirements provided
by Iveco Motors.
Furthermore, the use of the unit after overhaul showd conform to the original specified power and engine rev/min for
which the engine has been designed.
4
SECTION 3 - DUTY-INDUSTRIAL APPLICATION
F4HE NEF ENGINES
Base - February 2006
Print P2D32N00GB
Clearance data - 4 cyl.
F4HE9484A
Type
F4HE9484A
ρ
Compression ratio
16.5 : 1
Max. output
kW
(HP)
rpm
104
141
2200
Max. torque
Nm
(kgm)
rpm
560
56
1400
Loadless engine
idling
rpm
-
Loadless engine
peak
rpm
-
Bore x stroke
Displacement
104 x 132
4485
TURBOCHARGING
Turbocharger type
with intercooler
HOLSET HX27W
bar
LUBRICATION
Forced by gear pump, relief valve single action
oil filter
Oil pressure (warm engine)
- idling
bar
- peak rpm
bar
0.7
4.0
COOLING
Water pump control
Thermostat
- start of opening
°C
By liquid
Through belt
82.2
15W40 ACEA E3
FILLING
engine sump
liters
engine sump + filter
liters
5.3
6.3
!
Data, features and performances are valid only if the technician fully complies with all the installation requirements provided
by Iveco Motors.
Furthermore, the use of the unit after overhaul showd conform to the original specified power and engine rev/min for
which the engine has been designed.
SECTION 3 - DUTY-INDUSTRIAL APPLICATION
5
F4HE NEF ENGINES
Print P2D32N003GB
Base - February 2006
Clearance data - 6 cyl.
F4HE9684P
Type
F4HE9684P
ρ
Compression ratio
17.5 : 1
Max. output
kW
(HP)
rpm
175
234
2300
Max. torque
Nm
(kgm)
rpm
1020
102
1500
Loadless engine
idling
rpm
-
Loadless engine
peak rpm
rpm
-
Bore x stroke
Displacement
104 x 132
6728
TURBOCHARGING
Turbocharger type
with intercooler
HOLSET HX35W
bar
LUBRICATION
Oil pressure (warm engine)
- idling
bar
Forced by gear pump, relief valve single action
oil filter
bar
- peak rpm
bar
2
4
COOLING
Water pump control
Thermostat
- start of opening
ºC
By liquid
Through belt
81
± 2
15W40 ACEA E3
FILLING
engine sump
liters
engine sump + filter
liters
15
15 + 1
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