Iveco N60 ENT M37 User manual

N60 ENT M37
MARINE ENGINE
INSTALLATION INSTRUCTIONS

N60 ENT M37
II FEBRUARY 2003 EDITION
FOREWORD
Please read carefully the indications provided in this docu-
ment: compliance with them will ensure the engine will con-
tinue to run smoothly and reliably, protecting users and ser-
vice personnel against the risk of mishaps.
The instructions contained in this document pertain specifi-
cally to the N60 ENT M37 engine and complement the
IVECO Aifo publication “Marine Engine Installation Manual”,
which should be referred to for all matters not covered
herein.
Any installation not in compliance with the contents of these
instructions, or modifications to the engine and its fittings are
not admitted.The installing Yard is required to conduct tests
to verify the functional compatibility between the engine’s
electrical-electronic equipment and the other electronic
devices present on the boat.
Engineers and installation personnel are reminded of their
obligation to comply with workplace safety rules.
To ready the engine for starting, follow the procedure set out
at the end of Section 2 of this document.
To get the best possible performance out of the engine, it is
mandatory to conform with its intended mission profile.The
engine must not be used for purposes other than those stat-
ed by the manufacturer. IVECO Aifo is willing to examine
beforehand any requirements for particular installations.
In particular
❏Use of unsuitable fuels and oils may compromise the
engine’s regular operation, reducing its performance, reli-
ability and working life.
❏For the engine to maintain its original condition, it is
absolutely mandatory to use only Original IVECO Parts.
❏Any tampering, modifications, or use of non-original
parts may jeopardize the safety of service personnel and
boat users.
Spares may be supplied only if the following are indicated:
- Commercial code and serial number of the engine;
- Part number as per spares catalog.
The information provided below refers to engine features as
of the date of publication. The manufacturer 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.
The manufacturer
is not liable for any errors
or omissions.
The IVECO competence and professionalism of the
Customer Service Network is always available to our cus-
tomers. Publication Edited by:
IVECO Engine Business Unit
C.O. Mkt. Advertising & Promotion
IVECO Aifo – Pregnana Milanese
Printed L 320.32.010 - Ed. 02/03

N60 ENT M37 III FEBRUARY 2003 EDITION
SECTION CONTENTS
OVERVIEW 1
INSTALLATION INSTRUCTIONS 2
DIAGNOSTICS 3

N60 ENT M37
IV FEBRUARY 2003 EDITION

SECTION 1
Overview
Page
IDENTIFYING DATA 3
COMMERCIAL CODE 4
PRODUCT MODEL NUMBER 5
ENGINE COMPONENTS 6
PERFORMANCE 8
GENERAL SPECIFICATIONS 10
❏Dimensions 12
N60 ENT M37 OVERVIEW 1 FEBRUARY 2003 EDITION

N60 ENT M37OVERVIEW
2FEBRUARY 2003 EDITION

➠
IDENTIFYING DATA
N60 ENT M37 OVERVIEW 3 FEBRUARY 2003 EDITION
Figure 2
The engine’s identifying data are stenciled on a tag located on the engine rocker-arm cover.
➠
1. Drawing Number - 2. Serial Number - 3. Commercial Code.
Figure 1
1
2
3

COMMERCIAL CODE
The purpose of the commercial code is to make it easier to understand the characteristics of the product, categorizing the
engines according to their family, origins and intended application.The commercial code, therefore, cannot be used for technical
purposes to recognize the engine’s components, this purpose is served by the “ENGINE S/N”.
N60 ENT M37OVERVIEW
4FEBRUARY 2003 EDITION
N60 E N T M 37 . 1 0
ENGINE FAMILY IDENTIFIER: N = NEF
DISPLACEMENT: 60 = 6000 cc NOMINAL
FUEL SUPPLY: E = ELECTRONIC INJECTION
BASE: N = NON STRUCTURAL
AIR INTAKE: T = INTERCOOLED SUPERCHARGED
APPLICATION: M = MARINE
MAXIMUM PERFORMANCE LEVEL ACHIEVABLE
37 = 370 HP
VERSION:
TURBOCHARGED:
1= COOLED
2= NOT COOLED
VERSION: Restyling

PRODUCT MODEL NUMBER
The model number is assigned by the manufacturer; it is used to identify the main characteristics of the engine, and to charac-
terize its application and power output level. It is stamped on a side of crank-case.
N60 ENT M37 OVERVIEW 5 FEBRUARY 2003 EDITION
F 4 A E 0 6 8 6 B *E 1 0 3
ENGINE FAMILY IDENTIFIER
DESIGN ITERATION
ENGINE
NO. OF STROKES AND CYLINDER DISPOSITION (0 = 4 STROKES,VERTICAL)
NO. OF CYLINDERS
FUEL + INJECTION (8 = DIESEL,TCA, DIRECT INJECTION)
INTENDED USE (6 = MARINE)
POWER RANGE:
B = MAXIMUM POWER 370 HP
E = EMISSION FOR
MARINE APPLICATION
VARIANTS TO
BASIC ENGINE
OR CUSTOMER

ENGINE COMPONENTS
1. Lubricating oil filter - 2. Electrical starter motor - 3. Coolant - sea water tube bundle heat exchanger - 4. Location of
sacrificial anode - 5. Cooled exhaust manifold - 6. Exhaust gas and sea water manifold - 7. Lifting padeyes - 8. Rocker-arm
cover - 9. Lubricating oil refill cap - 10. Coolant refill cap - 11. Location of thermostatic valve - 12. Coolant tank -
13. Automatic belt tensioner - 14. Alternator - 15. Coolant drain plugs.
N60 ENT M37OVERVIEW
6FEBRUARY 2003 EDITION
Figure 3
1
15
2
3
4
5
68 9 10
7
11
12
14 13
15

ENGINE COMPONENTS
N60 ENT M37 OVERVIEW 7 FEBRUARY 2003 EDITION
Figure 4
1. Intake air filter - 2. Common rail high pressure pump - 3. Fuel filter - 4. Sea water pump - 5. Sea water intake - 6.Throttle
position sensor potentiometer - 7. Sacrificial anode - 8. Blow-by filter - 9. Air-sea water heat exchanger - 10. Sea water drain
plug location - 11. Lubrication oil hand pump - 12. Intake air pressure and temperature sensor - 13. Lubricating oil dipstick. -
14. Common rail - 15. Air filter clogging sensor - 16. Cooled turbo-charger - 17. Sea water pipe from air heat exchanger
to engine coolant heat exchanger.
1234
9
10
11
12 14 15 16
7
8
13
17
5
6

PERFORMANCE
Brake horsepower values in accordance with ISO 3046-1, attainable after about 50 hours of operation under reference envi-
ronmental conditions characterized by 750 mmHg, 25°C, 30% relative humidity.Values fall within a tolerance of 5%.
Pleasure Service (A)
Type of boat
Pleasure and military boats with planing hull for high speed or semi-planing and displacing leisure hulls that use maximum power
for short periods alternating with prolonged periods at lower than maximum speed.
Engine utilization
Use of maximum power limited to 10% of the time. Cruising speed at engine rpm < 90% of nominal calibration rpm. Operating
limit: 300 hours/year. Definition of calibrations and operating limits for military and government agencies according to contrac-
tual specifications.
Nominal maximum power: kW (HP) @ rpm 272 (370) @ 2800
Nominal maximum torque Nm (kgm) @ rpm 1070 (112) @ 1800
Light Service (B)
Type of boat
Light boats for tourism, professional, or military use, with frequent speed changes. E.g.: leisure boats, chartering, light passenger
boats, high speed patrol boats for police, emergency, rescue, and special operations uses.
Engine utilization
Use of maximum power limited to 10% of the time. Cruising speed at engine rpm < 90% of nominal calibration rpm. Operating
limit: 1,000 hours/year. Definition of calibrations and operating limits for military and government agencies according to con-
tractual specifications.
Nominal maximum power: kW (HP) @ rpm 242 (330) @ 1900
Nominal maximum torque Nm (kgm) @ rpm 1001 (102) @ 1900
Intermediate Service (C)
Type of boat
Light boats for commercial, military, work and light fishing uses with variable speed. E.g.: patrol boats, pilot boats, light fishing ves-
sels, water taxies, medium range seasonal passenger transport, fire-fighting.
Engine utilization
Use of maximum power limited to 25% of the time. Cruising speed at engine rpm < 90% of nominal calibration rpm. Operating
limit: 1,000 - 3,000 hours/year. Definition of calibrations and operating limits for military and government agencies according to
contractual specifications.
Nominal maximum power: kW (HP) @ rpm 198 (270) @ 1900
Nominal maximum torque Nm (kgm) @ rpm 834 (85) @ 1900
Fuel Economy - Pleasure Use (A)
Specific fuel consumption at maximum power g/kWh (g/HPh) @ rpm ≤224 (164) @ 2800
Specific fuel consumption at maximum torque g/kWh (g/HPh) @ rpm ≤207 (152) @ 1800
Lubricating oil consumption at maximum power g/h @ rpm ≤485 @ 2800
N60 ENT M37OVERVIEW
8FEBRUARY 2003 EDITION

Gas Emissions
Compliance with Standard IMO MARPOL 73/78
ADDENDUM DIR. 94/25/EC
Sound Emissions
Maximum value of average level for engines in basic configuration dBA (measurement standard) 94 (ISO 3744)
Power Takeoffs (Optional)
2- throated Front Pulley for V belts
Basic diameter mm 187
Throat size mm 12,7
Power available @ 900 rpm kW (HP) 6 (8,1)
Power available @ 1800 rpm kW (HP) 12 (16,3)
Radial force given by belts tension (*) N ≤1340
(*) Direction of radial force from 60° to 300° referred to cylinder axis (piston at Tdc = 0°)
3-throated Front Pulley + Elastic Joint
Available torque in crank axis Nm (kgm) 150 (15)
Moment of inertia of rigidly added mass kgm2≤0,015
N60 ENT M37 OVERVIEW 9 FEBRUARY 2003 EDITION

GENERAL SPECIFICATIONS
Cycle 4-Stroke Diesel
Charge Supercharged and intercooled
Injection Direct
Number of cylinders 6 in line
Bore mm 102
Stroke mm 120
Total displacement cm35900
Compression ratio 17 ± 0.8 : 1
Direction of rotation, brake side counterclockwise
Minimum idling rpm rpm 650 ± 25
Maximum engine rpm, no load rpm 3050 ± 25
Engine inclination angles in continuous operation
Statical minimum/maximum degrees/360 +3 / +9
Maximum longitudinal (static + dynamic) degrees/360 + 18
Maximum transverse (static + dynamic) degrees/360 ± 23
Oil dipstick valid for static inclination degrees/360 +3 ÷ + 6
Supercharge
Turbo-charger with water-cooled body HOLSET HX40M
Maximum pressure bar -
Lubrication
Oil type SAE 15 W40/E 3 /
Oil compliant with specifications ACEA E3 / API CF4 / MIL L2104E/F
Total oil capacity on first filling liters (kg) 16,5 (14,8)
Total oil capacity with sump at minimum level liters (kg) 9 (8,1)
Total oil capacity with sump at top level liters (kg) 14,5 (13)
Oil pressure, warm engine, minimum idling rpm bar ≥1.2
Oil pressure, warm engine, maximum rpm bar ≥3,8
Maximum allowed temperature °C 120
Oil dipstick valid for static inclination degrees/360 +3 ÷ +6
Fuel Supply
Fuel oil compliant with standard EN 590
Low pressure transfer pump gear pump
Flow rate at maximum rpm liters/h 250
Fuel return flow rate to tank liters/h 240
Filtering: pre-filter µm 300
filter µm 4
Injection System
Type Common rail
System Bosch EDC 7
Maximum injection pressure bar 1450
N60 ENT M37OVERVIEW
10 FEBRUARY 2003 EDITION

Low Temperature Starting
Allowed, without external aids, down to °C - 15
Cooling
Closed coolant loop with sea water heat exchanger 50% mixture of water/Paraflu II or equiv
Compliant with SAE J 1034 specification
Total coolant quantity liters -
Engine-only capacity liters -
Expansion tank standard
Forced circulation centrifugal pump
Flow rate at maximum rpm liters/h -
Temperature regulation with thermostatic valve
initial opening °C 72 ± 2
maximum opening °C 82 ± 2
Sea water line forced circulation
Water pump self-priming with
neoprene impeller
Altezza pompa acqua mare da livello del mare m ≤2
Max. pump capacity liters/h 11700
Exhaust gas expulsion
Standard mixed with sea water
Electrical system
Nominal voltage V dc 12
Self-regulated alternator:
Voltage V dc 14
Maximum current intensity A 90
Electrical starter motor:
Nominal voltage V dc 12
Absorbed electrical power W 4000
Recommended battery capacity Ah ≥120
Current discharge at - 18°C (SAE J 537) A ≥900
Drive train coupling
Flywheel diameter mm (inches) - (14)
Flywheel case type SAE 3
Weights
Without liquids and without inverter kg 605
Without liquids with TDMG 5061 A inverter kg 720
Without liquids with ZF 280 A inverter kg 698
N60 ENT M37 OVERVIEW 11 FEBRUARY 2003 EDITION

N60 ENT M37OVERVIEW
12 FEBRUARY 2003 EDITION
Figure 5
Dimensions
Measurements in: millimeters (inches)
177
(6.96) 840 (33.07)
1495 (58.85)
TD MG5061A
253 (9.96)
7°146 (5.74)
610 (24.01)
805 (31.69)
==
790 (31.10)
45 (1.77)

SECTION 2
Installation Instructions
Page
INSTALLATION OVERVIEW 3
CAUTIONS 4
❏Handling cautions 4
❏Installation cautions 4
❏Engine’s first start 4
❏Use and servicing cautions 4
❏Prolonged engine inactivity 4
DESIGN STANDARDS 5
❏Accessibility 5
❏Securing 5
❏Combustion and ventilation air 5
❏Sea water pipeline 5
❏Engine pre-heating 5
❏Exhaust gas discharge 5
❏Electrical-Electronical equipment 5
TECHNICAL DATA FOR INSTALLATION 6
FUEL LINE 7
❏Prefilter 7
❏Material characteristics 7
ELECTRICAL CIRCUIT 8
❏Electrical equipment 8
❏ECU 8
❏Relay box 9
❏Relay functions 9
❏Power grid 9
❏Engine electrical ground 10
❏Battery Recharge 10
❏Indication and Control Panel 10
❏Throttle Position Sensor 10
ENGINE ELECTRICAL WIRING 11
INSTALLATION TESTS 12
❏Fuel Tank Suction 12
N60 ENT M37 INSTALLATION INSTRUCTIONS 1 FEBRUARY 2003 EDITION

Page
❏Throttle Position Sensor 12
❏First Start 12
❏Starting procedures 12
❏RPM control 13
❏Instrument and Control Panel 13
❏Fault memory reset 13
❏Electrical power supply to the system 13
❏Engine Compartment Vacuum 13
❏ECU Temperature 13
❏Combustion Air Temperature 13
❏Exhaust Back-pressure 13
❏Exhaust Temperature 14
❏Fuel Temperature 14
❏Fuel Pressure in Fuel Supply Line 14
PREVENTIVE MAINTENANCE IN CASE
OF PROLONGED ENGINE INACTIVITY 15
ENGINE’S FIRST START /
RESTORING NORMAL OPERATING CONDITIONS 15
N60 ENT M37INSTALLATION INSTRUCTIONS
2FEBRUARY 2003 EDITION

INSTALLATION OVERVIEW
N60 ENT M37 INSTALLATION INSTRUCTIONS 3 FEBRUARY 2003 EDITION
The figure shows the set of components of an installation
including those supplied, as standard or optional items, with
the engine equipment, and those supplied or built by the
yard.The figure is meant to provide an overall picture of the
operations required for engine installation.
Component positions and illustrations are not binding, but
merely provided by way of indication, and they depend on
the choices made by yard engineers according to their com-
petence, to the spaces and the prescriptions set out in the
chapter that follows.
Figure 1
1. Instrument panel – 2. Electrical system cabinet with Eletronic Central Unit and rele box – 3. Exhaust gas and sea water
drain pipe – 4. Sea water suction – 5. Decanting filter – 6. Fuel feed pipe for high pressure pump – 7. Fuel tank return pipe –
8. Fuel suction pipe – 9. Fuel tank with suction/return assembly – 10. Linkage for throttle potentiometer operation –
11.Throttle lever
11
1 2
456789
3
10

CAUTIONS
While an electronically controlled injection system provides
for better engine performance, it also makes it mandatory
for installing and servicing personnel to comply with some
fundamental rules that will surely become the norm as elec-
tronic engine control equipment becomes ever more wide-
spread.
Boat fitters and servicing personnel are invited to familiarize
themselves with the notes that follow and to contact
IVECO Aifo personnel whenever compliance should prove
impossible.
Failure to comply with the rules set out below shall void the
warranty and exonerate IVECO Aifo from all liabilities.
Handling
The engine shall be handled by experienced personnel, using
the prescribed tool or an equalizer that will keep the lifting
lines parallel and with suitable equipment in terms of load
bearing capacity and size.
The two padeyes provided for lifting the engine alone shall
always be used simultaneously.
Installation
- Use of knife switches or battery disconnects on the EMB
power supply line is not allowed.
- Do not modify wiring; wire length cannot be changed.
- Use only electronic device wiring compliant with the
IVECO standard, in terms of length, conductor type,
location, clamping, shielding and grounding braids con-
nection.
- To avoid any interference, the wiring for devices other
than engine electronic systems must follow different
paths.
- Do not connect any extraneous device to the engine
electrical equipment.
- Do not provide electrical voltage to the boat’s system
before first verifying that there are no short circuits.
- Do not insert pipes for drawing fuel from the engine fuel
supply pipelines.
- Do not make any modification to the engine’s hydraulic
circuits and components.
- Do not perform any electric arc welding operations
without first removing the electronic units from the seat,
placing them at a suitable distance for safety.
- Do not subject electronic units to temperatures exceed-
ing 80°C.
- Do not paint electrical components and connections.
- Do not alter the data contained in the engine control
unit.
- Tighten threaded elements according to the prescribed
procedures and torque values.
Engine’s first start
Follow the procedure set out in the paragraph entitled
"Engine’s first start / Restoring normal operating conditions"
at the end of this section.
Use and Servicing
- When starting the engine the first time, have available
appropriate means to shut off combustion air intake in
case of runaway speed rate.
- Never disconnect the batteries electrically when the
engine is turning.
- Remove the batteries’ electrical connections before any
operation on the electrical system.
- Ensure that battery terminals comply with the correct
polarity, that they are properly tightened and protected
against any short circuits and corrosion phenomena.
- Do not connect or disconnect electrical connections on
live circuits.
- Do not cause any sparks in the attempt to verify the
presence of electrical voltage.
- Do not draw fuel from tanks made of copper alloys
and/or with pipes lacking filtering systems.
- Do not wash the engine and its components with cor-
rosive or abrasive detergents, to avoid jeopardizing the
operating condition of the electrical connections.
Prolonged engine inactivity
The end of this section contains a list of the steps for prepar-
ing the engine before long inactivity periods, and for restor-
ing it to its operating condition.
N60 ENT M37INSTALLATION INSTRUCTIONS
4FEBRUARY 2003 EDITION