Iveco N60 ENT M37 Service Manual

TECHNOLOGICAL EXCELLENCE

NEF

N60 ENT M37

6 CYLINDERS IN LINE

DIESEL CYCLE

FOR MARINE APPLICATIONS

INSTALLATION DIRECTIVE

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
N60 ENT M37 engine 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 Parts is a necessar y 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 par ts, you must indicate:

- Commercial code, serial number and indications shown
on the engine tag;

- Part number of the spare as per spare par t 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 - March 2004 Edition

N60 ENT M37 INSTALLATION DIRECTIVE

2

MARCH 2004

CONTENTS

Page

1. WARNINGS AND CAUTIONS 4

2. ENGINE PARTS AND COMPONENTS 6

3. INSTALLATION OVERVIEW 8

4. GENERAL INSTALLATION CRITERIA 9

5. TECHNICAL DATA FOR INSTALLATION 10

6. IDENTIFICATION DATA 12

7. FUEL LINE 13

8. ELECTRICAL EQUIPMENT 15

9. MAIN ANALOG INSTRUMENT PANEL 20

10. SECONDARY ANALOG INSTRUMENT PANEL 24

11. DRILLING PLANS FOR ANALOG PANELS 25

12. MAIN DIGITAL INSTRUMENT PANEL 26

13. SECONDARY DIGITAL INSTRUMENT PANEL 32

14. DRILLING PLAN FOR DIGITAL PANELS 33

15. CUSTOMIZED INSTRUMENT PANEL 34

16. SENSORS FOR DETECTION
AND PANEL SIGNALING 36

17. PREPARING THE ENGINE FOR FIRST START-UP 38

18. TESTS BEFORE THE FIRST START-UP 38

19. FIRST ENGINE START 39

20. EDC ANOMALIES INDICATION 40

21. BLINK CODE TABLE 41

22. UNDERWAY CHECKS 43

23. PREPARING THE ENGINE
FOR LONG IDLE PERIODS 44

24. WIRING DIAGRAMS 45

N60 ENT M37INSTALLATION DIRECTIVE

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MARCH 2004

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 par ticular 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.

❏ 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.

❏ 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

❏ 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.

❏ Do not modify the wiring harnesses; their length may

not be modified: use only available extensions.

❏ 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 earth braids.

❏ 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.

❏ Do not connect any extraneous user device to the

engine electrical equipment.

❏ Do not place voltage across the boat’s on-board electri-

cal system without first verifying that there are no short
circuits.

❏ Do not branch pipes off to draw fuel from the engine

supply lines.

❏ Do not make any change to the engine’s hydraulic cir-

cuits and components.

❏ Do not execute arc welding operations before remov-

ing the electronic units from their seating, placing them
at an adequate safety distance.

❏ Do not subject electronic units to temperatures exceed-

ing 80 °C.

❏ Do not paint electrical components and their connec-

tions.

❏ Do not alter the data contained in the engine control

electronic unit.

❏ Comply with prescribed procedures and torque values

when tightening threaded elements.

Start-up

❏ Ready the engine following the procedure set out in

Chapter 17.

❏ When star ting the engine the first time, have suitable

means available to cut off air intake in case of a runaway
condition.

❏ Start the engine after ensuring that it is complete with

every par t specified by the manufacturer and required
by the installation, without attempting to start it with
caps and occlusions to the lubrication, cooling and fuel
feed lines.

❏ 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.

❏ Make sure that the various pipelines are not in contact

with warm surfaces or moving par ts.

❏ The installing yard is required to carr y out tests to veri-

fy the functional compatibility between the electrical­electronic equipment of the engine and the other elec­tronic equipment present on the boat.

Tests and tuning up

❏ Never disconnect the batteries when the engine is

running.

❏ Remove the electrical connections from the batteries

before any operation on the electrical system.

❏ Ensure that the battery terminals comply with the exact

polarity, are properly tightened and protected against
accidental short circuits and corrosion phenomena.

❏ Do not connect or disconnect electrical connections

when electrical power supply is present.

❏ Do not cause sparks in the attempt to verify the pres-

ence of electrical voltage.

❏ Do not draw fuel through unfiltered lines.

❏ Do not clean the engine and its parts with corrosive or

abrasive detergent substances, to avoid compromising
the integrity of electrical connections.

N60 ENT M37 INSTALLATION DIRECTIVE

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MARCH 2004

1. WARNINGS AND CAUTIONS

❏ 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.

N60 ENT M37INSTALLATION DIRECTIVE

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MARCH 2004

2. ENGINE PARTS AND COMPONENTS

N60 ENT M37 INSTALLATION DIRECTIVE

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MARCH 2004

Figure 1

1. Engine coolant discharge cap - 2. Electric starter 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. Auxiliar y belt automatic tensioner -

15. Alternator - 16. Cap for engine coolant discharge and recirculation from sanitary 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

N60 ENT M37INSTALLATION DIRECTIVE

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MARCH 2004

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

N60 ENT M37 INSTALLATION DIRECTIVE

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MARCH 2004

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

4. GENERAL INSTALLATION CRITERIA

Accessibility

The engine must be located in such a way as to allow filling
and draining engine liquids when doing ser vicing 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
entry 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.

N60 ENT M37INSTALLATION DIRECTIVE

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MARCH 2004

5. TECHNICAL DATA FOR INSTALLATION

Combustion and ventilation air when underway

Static vacuum allowed downstream of the air filter kPa ≤ 3,5

mmH2O ≤ 350

Combustion air flow rate m3/h ≥ 1050

Engine room ventilation air flow rate (excluding combustion air) m3/h ≥ 4700

Static vacuum allowed in the engine room kPa ≤ 0,1

mmH2O ≤ 10

Temperature allowed in the engine room °C ≤ 50

Temperature increase in the engine room to ext. temperature °C ≤ 15

Exhaust gas discharge

Allowed static back pressure kPa ≤ 10

mmH2O ≤ 1000

Exhaust gas temperature at maximum power (turbocharger inlet) °C 640 ± 25

Flow rate at maximum power kg/h 1560

Outer diameter of exhaust mixed with sea water mm 127

inches 5

Fuel supply

Transfer pump delivery at maximum rpm litres/h ≤ 250

Flow rate return to tank litres/h ≤ 240

Fuel temperature to allow maximum power °C ≤ 70

Inner diameter, intake pipe mm ≥ 8

Inner diameter, return pipe mm ≥ 8

Thread on pre-filter junctions M 14 x 1,5

Free height below filter to replace filter mm ≥ 30

Open sea water cooling line

Intake pipeline diameter mm 45

inches 1,77

Pump delivery at maximum rpm litres/h 12000

Sea water pump height above sea level m ≤ 2

Allowed intake vacuum kPa ≤ 20

mmH2O ≤ 2000

Discharge pipeline diameter (only if unmixed gas exhaust) mm 45

inches 1,77

Allowed engine inclination angles

Maximum longitudinal in continuous operation (static + dynamic) degrees/360 + 18

Maximum transverse in continuous operation (static + dynamic) degrees/360 ± 23

Longitudinal for oil level check with standard dipstick degrees/360 0 to +6

N60 ENT M37 INSTALLATION DIRECTIVE

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MARCH 2004

Power takeoffs (optional)

2-race front pulley for “V” belts

Reference diameter mm 187

Race dimension mm 12.7

Power available at 900 rpm kW (HP) 6 (8,1)

Power available at 1800 rpm kW (HP) 12 (16,3)

Radial force resulting from belt tension (*) N ≤ 1340

(*) For direction of the resulting radial force between 60° and 300° with reference to the cylinder axis (piston at top dead
center = 0°)

3-race front pulley + elastic joint

Torque available in engine axis Nm (kgm) 150 (15)

Moment of iner tia of rigidly added masses kgm

2

≤ 0,015

N60 ENT M37INSTALLATION DIRECTIVE

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MARCH 2004

177

(6.96) 840 (33.07)

1350 (53.15)

243 (9.57)

610 (24.01)

850 (33.46)

==

780 (30.70)

45 (1.77)

Figure 4

Dimensions

Measurements in: millimeters (inches).

04_070_N

6. IDENTIFICATION DATA

N60 ENT M37 INSTALLATION DIRECTIVE

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MARCH 2004

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.

7. FUEL LINE

N60 ENT M37INSTALLATION DIRECTIVE

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MARCH 2004

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 car tridge 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 H

2

O 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.

High pressure Low pressure

Figure 7

1

2

3

5

4

8

6

04_072_N

7

Fuel supply system scheme

N60 ENT M37 INSTALLATION DIRECTIVE

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MARCH 2004

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.

04_040_N

1

17

19

16

18

15

1314 12 11

10 9

2 3 5 6 74 8

Figure 8

04_244_N

Figure 9

5

2

3

4

Hydraulic connections

B

A

1

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.

8. ELECTRICAL EQUIPMENT

N60 ENT M37INSTALLATION DIRECTIVE

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MARCH 2004

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.

1

2

4

3

6

7 8

5

10

9

15

04_073_N

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 starter motor and alternator.

11

12

13

14

Synoptic

N60 ENT M37 INSTALLATION DIRECTIVE

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MARCH 2004

JB JA

JF1 JF2

A2

A1

A

04_235_N

Figure 11

1. Connector for instrument panel connection wire harness - 2. Engine wire harness - 3. Interface wire harness - 4. Power line.

3 41 2

INDICATIONS AND

ALARMS SENSORS

INDICATIONS AND

ALARMS SENSORS

ELECTRO-INJECTORS

EDC COMPONENTS

ALTERNATOR

BATTERY

EDC

RELAY

BOX

ELECTRIC STARTER

MOTO R

NEF ENT M37

GEAR BOX

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.

Wire harness

N60 ENT M37INSTALLATION DIRECTIVE

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MARCH 2004

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

E3

E2

PR

H

E1

V

- BATT

JF2 JF1

VI

Engine wire harness Interface wire harness

04_221_N

Figure 12

A. Fuel temperature sensor for EDC - B. Drive shaft sensor for EDC - C. Camshaft sensor - F. Engine coolant temperature sensor for EDC - 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.

Power supply line

1.Alternator - 2. Electric star ter 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 battery,
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 supplementar y batter y, 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 batter y used for ser vices 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 starting 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.

Engine electrical ground

The connection of the engine electrical ground is achieved
by connecting with a cable of at least 70 mm2cross 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 par ts, 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.

N60 ENT M37 INSTALLATION DIRECTIVE

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MARCH 2004

EDC power supply

04_076_N

4

1

2

3

Figure 14

1

04_077_N

04_078_N

Figure 15

Figure 13