Iveco NEF N60-ENT-M40, NEF N60-ENT-M37, NEF N40-ENT-M25 Service Manual
NEF
N40 ENT M25
N60 ENT M37 - M40
4 - 6 CYLINDERS IN LINE
DIESEL CYCLE
FOR MARINE APPLICATIONS
INSTALLATION DIRECTIVE
MAY 2006 EDITION
T E C H N O L O G I C A L E X C E L L E N C E
INSTALLATION DIRECTIVE
2
MAY 2006
N40 ENT M25
N60 ENT M37-M40
FOREWORD
We strongly recommend that you carefully read the indications contained in this document: compliance with them
protects the engine against irregular operation and assures
its reliability, safeguarding sea-going and maintenance personnel against accident hazards.
The indications contained in this directive pertain to the
N40 ENT M25, N60 ENT M37 and N60 ENT M40 engines
and complement the IVECO MOTORS publication “Guide
to the Installation of Marine Engines” the reader should refer
to, for anything that is not explained herein.
For more complete information about the engine, please
refer to the appropriate technical brochure.
Use of fuels and oils with different characteristics from
those set out in the operation and maintenance manual may
compromise the regular operation of the engine, limiting its
performance, reliability and working life.
Exclusive use of IVECO Original Par ts is a necessary condition to maintain the engine in its original integrity.
Tampering, making modifications and using non original parts
can jeopardize the safety of boat engineers and users.
To obtain spare parts, you must indicate:
- Commercial code, serial number and indications shown
on the engine tag;
- Part number of the spare as per spare part catalog.
The information provided below refer to engine characteristics that are current as of the publication date.
IVECO MOTORS reserves the right to make modifications
at any time and without advance notice, to meet technical or
commercial requirements or to comply with local legal and
regulatory requirements.
We refuse all liability
for any errors
and omissions.
The reader is reminded that the IVECO MOTORS Technical
Assistance Network is always at the Customer’s side with its
competence and professionalism.
Publication IVECO MOTORS edited by:
IVECO PowerTrain
Advertising & Promotion
Pregnana Milanese (MI)
www.ivecomotors.com
Printed P3D64N001 E - May 2006 Edition
INSTALLATION DIRECTIVE
3
MAY 2006
N40 ENT M25
N60 ENT M37-M40
CONTENTS
Page
Indications for consultation
The different versions of the motors are generally hown
using the same pictures and descriptions, however important
differences are shown separately.
CAUTION
During the year 2005, some modifications were made to
the internal circuits of the relay box and to the wiring.
These modifications make incompatible and harmful the
use of the components supplied now together with the
components supplied before. Please refer to the instruction shown in Chapter 8.
1. WARNINGS AND CAUTIONS 4
2. ENGINE PARTS AND COMPONENTS
6
3. INSTALLATION OVERVIEW
8
4. GENERAL INSTALLATION CRITERIA
9
5. TECHNIC AL DATA FOR INSTALLATION 1
0
6. IDENTIFICATION DATA 1
2
7. FUEL LINE 1
3
8. ELECTRICAL EQUIPMENT 1
6
9. MAIN ANALOG INSTRUMENT PANEL 2
4
10. SECONDARY ANALOG INSTRUMENT PANEL 2
8
11. DRILLING PLANS FOR ANALOG PANELS 2
9
12. MAIN DIGITAL INSTRUMENT PANEL 3
0
13. SECONDARY DIGITAL INSTRUMENT PANEL 3
6
14. DRILLING PLAN FOR DIGITAL PANELS 3
7
15. CUSTOMIZED INSTRUMENT PANEL 3
8
16. SENSORS FOR DETECTION
AND PANEL SIGNALING 4
0
17. PREPARING THE ENGINE FOR FIRST START-UP 4
2
18. TESTS BEFORE THE FIRST START-UP 4
2
19. FIRST ENGINE START 4
3
20. EDC ANOMALIES INDIC ATION 4
4
21. BLINK CODE TABLE 4
5
22. UNDERWAY CHECKS 4
7
23. PREPARING THE ENGINE
FOR LONG IDLE PERIODS 4
8
24. WIRING DIAGRAMS 4
9
25. APPENDIX 6
5
INSTALLATION DIRECTIVE
4
MAY 2006
N40 ENT M25
N60 ENT M37-M40
To obtain the best engine performance, it is essential not to
deviate from the mission profile for which it was produced
and set up. The engine must not be used for purposes other
than those stated by the manufacturer. IVECO MOTORS
is willing to examine any need for particular installations
beforehand. Use of an electronically controlled injection
system, in providing the engine with performance benefits,
requires that the installer and maintenance specialist comply
with some fundamental rules, which will become more and
more commonplace as use of such equipment becomes
progressively more widespread. Boat outfitters and maintenance specialists are invited to closely follow the instructions
contained herein. No modifications to the engine, its accessories and components, are allowed.
Failure to comply with the instructions that follow shall
void the warranty and relieve IVECO MOTORS of all
liabilities.
For personnel safety
Specialists and installers are cautioned to comply with
workplace safety rules and to adopt prescribed individual
protection devices when working.
o Drain the cooling, lubrication and fuel lines only after
the fluids have duly cooled. The pressurized cap of the
water line may be opened only after the engine has duly
cooled.
o Batteries contain a highly corrosive sulfuric acid solution:
must never be upset and must be handled with the
utmost caution to prevent spillage. Ensure that the battery compartment is adequately ventilated.
Handling
The engine must be handled by experienced personnel,
using the prescribed tool or a rocker arm that keeps the
lifting lines parallel and with adequate equipment in terms
of capacity and size. The two eyebolts provided for lifting the
engine alone must always be used simultaneously.
Installation
o Knife switches or battery breakers may be used on the
power supply line of the engine electronic unit, provided
they are not used to shut the engine off.
o Do not modify the wiring harnesses; their length may
not be modified: use only available extensions.
o Do not use electronic device wiring harnesses not com-
pliant with the IVECO MOTORS directive, in terms of
length, type of conductor, location, clamping, connection
of the shielding and ear th braids.
o To avoid any interference, the wiring harnesses of the
different on-board electronic devices must follow different paths from those of the engine electronic systems.
o Do not connect any extraneous user device to the
engine electrical equipment.
o Do not place voltage across the boat’s on-board electri-
cal system without first verifying that there are no short
circuits.
o Do not branch pipes off to draw fuel from the engine
supply lines.
o Do not make any change to the engine’s hydraulic cir-
cuits and components.
o Do not execute arc welding operations before removing
the electronic units from their seating, placing them at an
adequate safety distance.
o Do not subject electronic units to temperatures exceed-
ing 80 °C.
o Do not paint electrical components and their connec-
tions.
o Do not alter the data contained in the engine control
electronic unit.
o Comply with prescribed procedures and torque values
when tightening threaded elements.
Start-up
o Ready the engine following the procedure set out in
Chapter 17.
o When starting the engine the first time, have suitable
means available to cut off air intake in case of a runaway
condition.
o Start the engine after ensuring that it is complete with
every part specified by the manufacturer and required
by the installation, without attempting to star t it with
caps and occlusions to the lubrication, cooling and fuel
feed lines.
o Check that the fluid lines are perfectly sealed, especially
lines for fuels and lubricants, which may cause fires and
consequent harm to persons and equipment.
o Make sure that the various pipelines are not in contact
with warm surfaces or moving parts.
o The installing yard is required to carry out tests to verify
the functional compatibility between the electrical-electronic equipment of the engine and the other electronic
equipment present on the boat.
Tests and tuning up
o Never disconnect the batteries when the engine is
running.
o Remove the electrical connections from the batteries
before any operation on the electrical system.
o Ensure that the battery terminals comply with the exact
polarity, are properly tightened and protected against
accidental short circuits and corrosion phenomena.
o Do not connect or disconnect electrical connections
when electrical power supply is present.
1. WARNINGS AND CAUTIONS
INSTALLATION DIRECTIVE
5
MAY 2006
N40 ENT M25
N60 ENT M37-M40
o Do not cause sparks in the attempt to verify the pres-
ence of electrical voltage.
o Do not draw fuel through unfiltered lines.
o Do not clean the engine and its par ts with corrosive or
abrasive detergent substances, to avoid compromising
the integrity of electrical connections.
o The engine fluids and air, water, and oil filters discarded
after use must be properly stored and delivered to
appropriate collection centers.
Long engine inactivity periods
Before long periods of inactivity, ready the engine following
the procedure set out in Chapter 23.
INSTALLATION DIRECTIVE
6
N40 ENT M25
N60 ENT M37-M40
MAY 2006
2. ENGINE PARTS AND COMPONENTS
Figure 1
1. Engine coolant discharge cap - 2. Electric star ter motor - 3. Tube bundle engine coolant/sea water heat exchanger - 4. Location
of sacrificial anode - 5. Cooled exhaust manifold - 6. Exhaust gas and sea water discharge pipeline - 7. Cap for engine coolant outlet
to sanitary water heating system - 8. Lifting eyebolts - 9. Rocker arm cover - 10. Oil refill cap - 11. Coolant refill cap - 12. Location
of thermostatic valve - 13. Engine coolant tank - 14. Auxiliary belt automatic tensioner - 15. Alternator - 16.-Cap for engine coolant
discharge and recirculation from sanitar y water heating system - 17. Oil filter.
17
16
2
3
4
5
6
9 10 11
8
12
13
15 14
1
04_006_N
7
INSTALLATION DIRECTIVE
7
N40 ENT M25
N60 ENT M37-M40
MAY 2006
Figure 2
1. Combustion air filter - 2. Common rail high pressure injection pump -3. Fuel filter - 4. Sea water pump - 5. Sea water inlet -
6. Throttle potentiometer - 7. Sacrificial anode - 8. Oil vapor separator - 9. Combustion air-sea water heat exchanger - 10. Location
of sea water discharge cap - 11. Manual lubricating oil extraction pump - 12. Combustion air pressure and temperature sensor -
13. Oil dipstick - 14. Common rail distributor - 15. Air filter clogging sensor - 16. Cooled turbocharger - 17. Sea water junction pipe
from after-cooler to engine coolant/sea water heat exchanger.
1234
9
10
11
12 14 15 16
7
8
13
17
5
6
04_007_N
INSTALLATION DIRECTIVE
8
N40 ENT M25
N60 ENT M37-M40
MAY 2006
The figure shows the set of components of an installation,
including those supplied with the engine equipment, standard
or optional, and those supplied or produced by the yard.
It provides a comprehensive picture of the operations
required to install the engine.
Components arrangement and illustrations are not binding
but merely indicative, subject to the choices made by yard
engineers according to their skills, available spaces and the
prescriptions set out herein.
3. INSTALLATION OVERVIEW
1. Indicator and control panel - 2. Electrical panel with relay box and EDC electronic unit - 3. Exhaust gas and sea water discharge -
4. Filtered sea water intake - 5. Decanter filter - 6. Fuel feed pipe to the high pressure pump - 7. Fuel return pipe to tank - 8. Fuel
suction pipe - 9. Tank - 10. Throttle Bowden rod - 11. Throttle lever.
Figure 3
11
1 2
456789
3
10
04_071_N
INSTALLATION DIRECTIVE
9
MAY 2006
N40 ENT M25
N60 ENT M37-M40
4. GENERAL INSTALLATION CRITERIA
Accessibility
The engine must be located in such a way as to allow filling
and draining engine liquids when doing servicing operations.
Moreover, the relay box and the diagnostic push-button
present on it must be accessible, also when underway.
Anchoring
If anchoring is accomplished by interposing shock mounts,
they must be able to support the engine’s mass and the longitudinal thrust exerted by the propeller shaft in motion.
If rigid mounting is adopted, particular care must be given to
support alignment and co-planarity.
Information on dimensions and fastening values are provided
in the “Installation Diagram”.
Combustion and ventilation air
Compliance with prescriptions on the quantity of air
required for combustion and ventilation assures a regular
operation of the engine even in adverse conditions and it
enables to deliver its maximum design power (1).
Sea water line
It must be provided with an intake capable of preventing
the entr y of foreign bodies into the suction pipes. Between
the intake and the pump, it is best to interpose a gate to be
closed in emergencies or for extended idle periods and a
filter to stop the smaller impurities; it is also recommended
to install a suitably dimensioned and easily replaced zinc
anode.
The engine sea water line was provided by the manufacturer
with protection anodes to be replaced periodically.
The rubber hoses positioned along the pipeline shall be sufficiently rigid not to create choked areas caused by crushing (1).
Engine pre-heating
If the engine usage profile requires immediate delivery of
power at the highest rpm’s, it is recommended to install an
auxiliary pre-heater on the closed cooling loop.
Exhaust gas discharge
The exhaust gas discharge conduit shall be compliant with
the guidelines contained in the IVECO MOTORS publication
“Guide to the installation of marine engines”; it also provides
indications to compute the dimensions of the exhaust pipelines, which is the Yard’s responsibility.
Electric - electronic equipment
Provide a suitable arrangement of the engine control electronic unit, of the relay box and of the possible optional
electronic units, referring to the dimensions and position of
the wire harnesses and their connectors.
Both units must be anchored in such a way as to dampen the
vibrations and stresses undergone by the hull while underway and/or induced by the engine’s operation.
(1) The EDC engine electronic control is programmed to
reduce maximum deliverable power if the operating
parameters measured by the sensors show that critical conditions have been reached, and if exceeded the
engine could be damaged.
INSTALLATION DIRECTIVE
10
N40 ENT M25
N60 ENT M37-M40
MAY 2006
5. TECHNICAL DATA FOR INSTALLATION
N40 ENT
M25
N60 ENT
M37
N60 ENT
M40
Combustion and ventilation air when underway
Static vacuum allowed downstream of the air filter
kPa
mm H2O
≤ 3,5
≤ 350
≤ 3,5
≤ 350
≤ 3,5
≤ 350
Combustion air flow rate m3/h
≥ 900 ≥ 1050 ≥ 1150
Engine room ventilation air flow rate (excluding combustion air) m3/h
≥ 3100 ≥ 4700 ≥ 5050
Static vacuum allowed in the engine room
kPa
mm H2O
≤ 0,1
≤ 10
≤ 0,1
≤ 10
≤ 0,1
≤ 10
Temperature allowed in the engine room °C
≤ 50 ≤ 50 ≤ 45
Temperature increase in the engine room to ext. temperature °C
≤ 15 ≤ 15 ≤ 15
Exhaust gas discharge
Allowed static back pressure
kPa
mm H2O
≤ 10
≤ 1000
≤ 10
≤ 1000
≤ 10
≤ 1000
Exhaust gas temperature at maximum power (turbocharger inlet) °C 650 ± 25 640 ± 25 660 ± 25
Flow rate at maximum power kg/h 1080 1560 1780
Outer diameter of exhaust mixed with sea water
mm
inches
127
5
127
5
127
5
Fuel supply
Transfer pump delivery at maximum rpm l/h
≤ 250 ≤ 250 ≤ 250
Flow rate return to tank l/h
≤ 240 ≤ 240 ≤ 240
Fuel temperature to allow maximum power °C
≤ 70 ≤ 70 ≤ 70
Inner diameter, intake pipe mm
≥ 8 ≥ 8 ≥ 8
Inner diameter, return pipe mm
≥ 8 ≥ 8 ≥ 8
Thread on pre-filter junctions M 14 x 1,5 14 x 1,5 14 x 1,5
Free height below filter to replace filter mm
≥ 30 ≥ 30 ≥ 30
Allowed intake vacuum
kPa
mm H2O
≤ 35
≤ 3500
≤ 35
≤ 3500
≤ 35
≤ 3500
Allowed on tank return pipe back pressure
kPa
mm H2O
≤ 20
≤ 2000
≤ 20
≤ 2000
≤ 20
≤ 2000
Open sea water cooling line
Intake pipeline diameter
mm
inches
45
1,77
45
1,77
45
1,77
Pump delivery at maximum rpm l/h 12000 12000 15500
Sea water pump height above sea level m
≤ 2 ≤ 2 ≤ 2
Allowed intake vacuum
kPa
mm H2O
≤ 20
≤ 2000
≤ 20
≤ 2000
≤ 20
≤ 2000
Dry exhaust outer diameter
mm
inches
45
1,77
45
1,77
45
1,77
Allowed engine inclination angles
Maximum longitudinal in continuous operation (static + dynamic) degrees/360 +20 +18 +18
Maximum transverse in continuous operation (static + dynamic) degrees/360 ± 22º30' ± 22º30' ± 22º30'
Longitudinal for oil level check with standard dipstick degrees/360 0 ÷ +6 0 ÷ +6 0 ÷ +6
INSTALLATION DIRECTIVE
11
N40 ENT M25
N60 ENT M37-M40
MAY 2006
177
(6.96) 840 (33.07)
1333 (52.48)
243 (9.57)
805 (31.69)
774(30.47)
45 (1.77)
305 (12) 305 (12)
04_070_N
201
(7.91) 599,5 (23.60)
1108 (43,62)
243 (9.57)
774 (30.47)
785 (30.90)
30 (1.18)
390 (15.35) 390 (15.35)
05_001_N
Figure 4
Dimensions
Measurements in: millimeters (inches).
N40 ENT
M25
N60 ENT
M37
N60 ENT
M40
Power takeoffs (optional)
2-race front pulley for “V” belts
Reference diameter mm 187 187 187
Race dimension mm 12.7 12.7 12.7
Power available at 900 rpm kW
≤ 6 ≤ 6 ≤ 6
Power available at 1800 rpm kW
≤ 12 ≤ 12 ≤ 12
Radial force resulting from belt tension (*) N
≤ 1340 ≤ 1340 ≤ 1340
(*) For direction of the resulting radial force between 60° and 300° with reference to the cylinder axis (piston at top dead
center = 0°)
2-race front pulley + elastic joint
Torque available in engine axis Nm
≤ 150 (15) ≤ 150 (15) ≤ 150 (15)
Moment of iner tia of rigidly added masses kgm
2
≤ 0,015 ≤ 0,015 ≤ 0,015
N40 ENT M25
N60 ENT M37 / N60 ENT M40
INSTALLATION DIRECTIVE
12
N40 ENT M25
N60 ENT M37-M40
MAY 2006
6. IDENTIFICATION DATA
Figure 6
Figure 5
Viale dell'Industria, 15/17 - 20010 Pregnana Mil.se MI - ITALY
ENGINE TYPE
ENGINE DWG
ENGINE S/N
COMMERC. TYPE / VERSION
POWER SET CODE
HOMOLOGATION
N°
ENGINE FAMILY
POWER (KW)
AND SPEED (RPM)
YEAR OF BUILD
S. p. A.
04_002_N
04_007_N
The engine identification data are stenciled on a tag positioned over the flywheel case.
INSTALLATION DIRECTIVE
13
N40 ENT M25
N60 ENT M37-M40
MAY 2006
1
2
3
5
4
8
6
04_072_N
7
7. FUEL LINE
For the installation, the following connections are required:
- from the tank to the pre-filter
- from the pre-filter to the pump inlet
- from the fuel discharge outlet to the tank
Pre-filter
The pre-filter with priming pump, supplied separately from
the engine, must be fastened near the tank, in a relatively low
point of the line to allow for easy replacement of the filtering
cartridge and/or the operation of the hand pump. Avoid the
use of additional mesh or paper filters along the feed lines
between pre-filter and engine. To avoid introducing impurities in the feeding lines inside the engine, do not place filter
cartridges pre-filled with fuel in the system.
Materials’ Characteristics
The fuel tank and the suction and return assembly must
withstand the continuous abrasion caused by a flow of fuel
oil of 250 l/h at a temperature of 120 °C without noticeable
deformation or wear or release of material. Use of metal
tanks, preferably made of iron alloys, is allowed, provided
they are connected to the negative terminal of the battery
to prevent the accumulation of electrostatic charges.
Tanks must be provided with vents to avoid exceeding an
internal pressure of ± 5kPa (± 0.5 m of H2O column); their
shape and the suction assembly must be such as to assure a
suction at the maximum longitudinal and transverse inclination allowed for the boat, with a residual quantity of fuel oil
considered “reserve”.
The suction inlet should be positioned in such a way as to
avoid taking in sludge. The return flow must be in such a way
as to facilitate the mixing of the returning fuel with the fuel
in the tank. If the tank is lower than the filter, then the return
pipe must always be submerged. The pipes and union fittings
of the fuel line must withstand a fuel oil flow rate of 250 l/h
at a temperature of 120 °C and a pressure of 3 bar (300
kPa) without noticeable deformation, wear or release of
material. Metal tubes, preferably made of iron alloys, are recommended, taking care to connect each individual segment
to engine ground to avoid the accumulation of electrostatic
charges and inserting a vibration damper elastic joint on each
segment. The pipes used must be certified according to the
relevant Countries’ rules or to the standards issued by classification Bodies.
1. Fuel filter - 2. Common rail - 3. Electro-injector - 4. Electro-injector return loop pressurization valve - 5. Rail overpressure valve -
6. High and low pressure pump - 7. Priming pump - 8. Settling pre-filter.
Figure 7
High pressure
Low pressure
INSTALLATION DIRECTIVE
14
N40 ENT M25
N60 ENT M37-M40
MAY 2006
04_040_N
2 5 6 74 83
1
16
17
15
18
19
1314 12 11
10
9
Fuel supply system scheme
1. High pressure radial pump - 2. Fuel temperature sensor - 3. Fuel filter - 4. Electro-injector - 5. Pressure sensor - 6. Common rail -
7. Common rail overpressure valve - 8. Electro-injector return loop pressurization valve, 1.3 to 2 bar - 9. Fuel tank - 10. Recirculation
manifold - 11. Manual priming pump - 12. Pre-filter - 13. Low pressure pump recirculation valve - 14. High and low pressure pump -
15. Low pressure mechanical feed pump - 16. Low pressure pump by-pass valve - 17. Fuel filter support - 18. Low pressure limiter
valve - 19. Pressure regulating electrical valve.
Figure 8
INSTALLATION DIRECTIVE
15
N40 ENT M25
N60 ENT M37-M40
MAY 2006
04_244_N
5
2
3
4
B
A
1
Figure 9
Hydraulic connections
A. To rail supply - B. Return flow from rail - 1. Low pressure fuel feed pump - 2. High pressure pump - 3. Rubber holder junction for
fuel inflow from pre-filter - 4. Rubber holder junction for fuel outflow to the tank - 5. Fuel filter.
INSTALLATION DIRECTIVE
16
N40 ENT M25
N60 ENT M37-M40
MAY 2006
ATTENZIONE
During the year 2005, some modifications were made to
the internal circuits of the relay box and to the wiring.
These modifications make incompatible and harmful the
use of the components supplied now together with the
components supplied before
The following tables show the correct coupling of the components.
1
2
4
3
6
7 8
5
10
9
15
05_026_N
11
12
13
14
16
8. ELECTRICAL EQUIPMENT
Figure 10
The electrical equipment of the engine comprises a series
of components provided separately from the engine to
enable an easy and diversified installation, according to the
Yard’s design choices. The need to make accessible, at sea or
underway, the controls to the electrical components and to
the connector for diagnostics contained in the relay box may
be met through different installation arrangements.
Along with the coupling of all connectors provided in the
wire harnesses, completing the installation also requires the
connecting wire harness (12) for the sensor for the presence
of water in the fuel (13), to complete the power line and to
connect the accumulator to the engine wire harness.
To obtain the engine stop if stressed function simply connect the ECF and ECM connectors to each other (these are
present on the wiring of the new model).
1. Engine wiring - 2. Indicator and control panel - 3. Provided wire harness - 4. JB Connection - 5. Relay box - 6. JA Connection -
7. Power supply and interface wire harness - 8. JF1 and JF2 connectors - 9. A2 connector of the ECU - 10. A and A1 connectors of
the ECU - 11. M Connector - 12. Wiring harness to be manufactured by the yard - 13. Sensor for the presence of water in the fuel
- 14. Sedimenting pre-filter - 15. Power line for electric star ter motor and alternator - 16. ECF and ECM connectors (Present on the
wiring of the new model).
INSTALLATION DIRECTIVE
17
MAY 2006
N40 ENT M25
N60 ENT M37-M40
N40 ENT M25
OLD MODEL
Component
IVECO
Code
Engine wiring with clamp
8039604
Engine wiring
8036966
Interface wiring
8035938
12V relay box (brass colour box) 8035890
24V relay box (brass colour box) 8035891
EXISTING MODEL
Component
IVECO
Code
Engine wiring with clamp
8041500
Engine wiring
8041167
Interface wiring
8041169
12V relay box (brass colour box) s 8041257
12V relay box (black colour box) s 8042960
24V relay box (brass colour box) * 8041353
24V relay box (black colour box) * 8042040
s Interexchangeable
* Interexchangeable
Chapter 24 shows the electric schemes of the tow models
which in the table titles are shown as “OLD MODEL” and
“EXISTING MODEL”.
N60 ENT M37-M40
OLD MODEL
Component
IVECO
Code
Engine wiring with clamp
8035822
Engine wiring
8035817
Interface wiring
8035938
12V relay box (brass colour box) 8035890
24V relay box (brass colour box) 8035891
EXISTING MODEL
Component
IVECO
Code
Engine wiring with clamp
8041170
Engine wiring
8041168
Interface wiring
8041169
12V relay box (brass colour box) s 8041257
12V relay box (black colour box) s 8042960
24V relay box (brass colour box) * 8041353
24V relay box (black colour box) * 8042040
s Interexchangeable
* Interexchangeable
Chapter 24 shows the electric schemes of the tow models
which in the table titles are shown as “OLD MODEL” and
“EXISTING MODEL”.
INSTALLATION DIRECTIVE
18
N40 ENT M25
N60 ENT M37-M40
MAY 2006
Synoptic
Figure 11
1. Connector for instrument panel connection wire harness - 2. Engine wire harness - 3. Interface wire harness - 4. Power line.
GEAR BOX
JB JA
JF1 JF2
A2
A1
A
N40 ENT M25
N60 ENT M37
N60 ENT M40
04_235_N
3 41 2
INDICATIONS AND
ALARMS SENSORS
INDICATIONS AND
ALARMS SENSORS
ELECTRO-INJECTORS
EDC COMPONENTS
ALTERNATOR
BATTERY
EDC
RELAY
BOX
ELECTRIC STARTER
MOTOR
THROTTLE POSITION
SENSOR
The wire harnesses provided with the engine include the
connectors for all optional components which may ordered
and their connections to the JB connector for the indicator
and control panel.
05_025_N
T
T
O
E2F
VE
WI
WI
SI
SI
VI
MM
A2 EDC
JB
M
JA
GG
B
PA
+ BATT
A EDC
A1 EDC
PF
A
ZH
V
C
K
K
E2
PR
H
E1
V
– BATT
JF2 JF1
VI
E3
(
*
)
ECF
ECM
s
s
INSTALLATION DIRECTIVE
19
N40 ENT M25
N60 ENT M37-M40
MAY 2006
Wire harness
Engine wire harness Interface wire harness
Figure 12
A. Fuel temperature sensor for EDC - B. Drive shaft sensor for EDC - C . Camshaft sensor - F. Engine coolant temperature sensor for EDC - ECF. Connector for the engine
stopping functions if stressed - ECM. Connector for the engine stopping function if stressed - H. Combustion air pressure/temperature sensor for EDC - K. Air filter clogging sensor
(for alarm) - M. Sensor for detecting the presence of water in the fuel pre-filter (for alarm) - O. Exhaust gas temperature sensor (for gauge) - T. Coolant temperature sensor (for
gauge) - V. Oil pressure sensor (for gauge) - E1. Cylinders 1 and 2 electro-injectors - E2.-Cylinders 3 and 4 electro-injectors - E3. Cylinders 5 and 6 electro-injectors -
GG. Alternator - JB. Instrument panel connection wire harness - JF1,JF2. Relay box - MM.-Electric starter motor - PA.-Throttle position sensor - PF. Heating element on fuel filter
- PR. Rail pressure sensor - SI. Gear box oil temperature sensor - VE. Engine oil pressure/temperature sensor for EDC - VI. High gear box oil pressure sensor (25 bar) -
WI. Low gear box oil pressure sensor (7 bar) - ZH. Pressure control solenoid valve.
(
*
)
Not applicable for the 4 cylinders
s Present on the wiring of the new model (See Chapter 8)
INSTALLATION DIRECTIVE
20
MAY 2006
N40 ENT M25
N60 ENT M37-M40
Power supply line
1.Alternator - 2. Electric starter motor - 3. Battery -
4. Engine wire harness.
The connection of the +B terminal of the alternator to the
positive +30 terminal of the electric starter motor must be
achieved with a conductor having a cross section of at least
10 mm2. The connection of the positive +30 terminal of the
electric starter motor to the positive pole of the batter y,
achieved with a conductor having a cross section of at least
70 mm2, allows to obtain, as shown in the figure, the simultaneous connection of the alternator to the battery. The connection between the engine ground and the negative pole
of the battery must be achieved according to the guidelines
provided in the Engine electrical ground paragraph.
CAUTION
If magneto-thermal protecting breakers are inserted, they
must not be used to stop the engine and in any case they
must be activated only a few seconds after shut-down.
Supplementary services battery
To assure that the engine can be star ted with a sufficient
quantity of energy, it is advisable to provide for the installation of a supplementary battery, dedicated to supplying
power to the on-board electrical services. The power line to
recharge it may be constructed according to the indications
provided in Chapter 24.
If one engine is installed
The battery used for services may be recharged interposing
on the power supply line a relay actuated by the recharge
signal of the alternator’s electronic regulator (D+).
If two engines are installed
The presence of two generators allows to keep the recharging functions separated: the generator (G1) recharges the
battery (AC1) dedicated to star ting both engines and powering both electrical/electronic control circuits, whilst the
generator (G2) recharges the battery (AC2) used to power
the services. In two-engine applications, it is essential to connect the engine grounds to a common potential; the solution
proposed in Chapter 24 fully complies with this need, assuring
the full functionality and independence of the two circuits.
M
50 D++B30
05_004_N
4
1
2
3
Figure 13
Equipment power supply
INSTALLATION DIRECTIVE
21
MAY 2006
N40 ENT M25
N60 ENT M37-M40
Engine electrical ground
The connection of the engine electrical ground is achieved
by connecting with a cable of at least 70 mm
2
cross section
to the negative pole of the battery to the tightening point of
the electric starter motor as shown in Figure 14.
1. Point of connection of the engine electrical ground.
To anchor the grounding terminal to the engine, proceed as
follows:
Completely remove the conducting paint from both parts
constituting the connection, using mechanical means or
suitable chemical product; if the anchoring operation is to
take place on superficially treated parts, completely remove
the anaphoretic paint with mechanical means, obtaining a
smooth support surface.
Apply a uniform layer of BH44D paint (IVECO standard 18-
1705) with a brush or spray gun.
Join the parts constituting the grounding note within 5 minutes from the time the paint was applied.
Battery recharging
B+. Connected to the +30 of the electric star ter motor - D+.
Excitation - N. Not connected.
This is accomplished through the power supply line of the
electric starter motor and connection to the +B of the
alternator. The electronic regulator of the alternator that
equips the engine allows an effective control over the battery recharging operation.
If, due to installation requirements, the batteries need to be
positioned at a distance from the engine, we recommend
increasing the cross section of the power line conductors
and verifying recharging effectiveness by measuring voltage
across the batter y poles.
1
04_077_N
Figure 14
04_078_N
Figure 15
Loading...