Iveco N60 ENT M37 Istruzioni operative

NEF ENGINE
N60 ENT M37
TECHNICAL AND REPAIR
MANUAL
TECHNOLOGICAL EXCELLENCE

FOREWORD
We strongly recommend that you carefully read the indica-
tions contained in this document: compliance with them pro-
tects the engine against irregular operation and assures its
reliability, safeguarding sea-going and maintenance personnel
against accident hazards.
The indications contained in this document pertain to the
N60 NT M37 marine engine and complement the IV CO
MOTORS publication “of Marine Diesel ngines Installation
Handbook”, the reader should refer to for anything that is
not explained herein.
Technical engineers and fitters are required to comply with
safety regulations on work. They have to implement and
adopt the device foreseen for individual personal safeguard
while carrying out maintenance or checks.
Safety rules are reminded in Section 9 of present publication.
Regulations on handling engine are reminded at the end of
Section 6 of present publication.
In order to start engine, strictly follow the procedure stated
at the end of Section 5 of present publication.
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.
IV CO MOTORS is available beforehand to examine
requirements for special installations, if any.
In particular
❏Use of unsuitable fuels and oils may compromise the
engine’s regular operation, reducing its performance, reli-
ability and working life.
❏xclusive use of IV CO Original Parts is a necessary
condition to maintain the engine in its original integrity.
❏Any tampering, modifications, or use of non-original
parts may jeopardize the safety of service personnel and
boat 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 characteris-
tics that are current as of the publication date.
IV CO 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 IV CO MOTORS Technical
Assistance Network is always at the Customer’s side with its
competence and professionalism.
N60 NT M37
II APRIL 2004
Publication IV CO MOTORS edited by:
IV CO PowerTrain
Advertising & Promotion
Pregnana Milanese (MI)
www.ivecomotors.com
Printed P3D32N001 E - April 2004 dition

SECTION CONTENTS
Section Page
1. OV RVI W 5
2. T CHNICAL DATA 53
3. L CTRICAL QUIPM NT 61
4. DIAGNOSTICS 91
5. MAINT NANC 117
6. S RVICING OP RATIONS
ON INSTALL D NGIN 123
7. TOOLS 139
8. OV RHAUL 147
9. SAF TY PR SCRIPTIONS 189
N60 NT M37 III
APRIL 2004
Indications for consultation
Sections 1-2-3 are intended for sales personnel, to provide
them with exact knowledge of the product’s characteristics
and enable them to meet Customer’s demands with preci-
sion, as well ad for yard personnel, to help them design and
complete a correct installation.
Remainders sections are meant for personnel tasked with
conducting ordinary and extraordinary maintenance; with an
attentive consultation of the chapter devoted to diagnosing,
they will also be able to provide an effective technical assis-
tance service.

N60 NT M37
IV APRIL 2004

SECTION 1
OVERVIEW
Page
ID NTIFYING DATA 7
COMM RCIAL COD 8
PRODUCT MOD L NUMB R 9
NGIN PARTS AND COMPON NTS 10
NGIN ARCHIT CTUR 12
Crankcase 12
Crankshaft 13
Connecting Rods 13
Pistons 14
Timing system driving gear 14
Cylinder head 16
Valves and valve seatings 17
Ancillary machine members drive 17
COMBUSTION AIR INTAK
AND XHAUST SYST M 18
Comburent air filter 19
Turbocompressor 19
Air / seawater heat exchanger 19
COOLING FR SH WAT R CLOS D-LOOP 20
xhaust manifold cooling 21
Thermostatic valve 22
Water pump 22
Additional expansion tank 22
S A WAT R OP N COOLING LOOP 23
Sea water Pump 24
Sea water/coolant heat exchanger 24
NGIN OIL LUBRICATION LOOP 25
Gear Pump 26
Filter bracket 26
Oil vapour recirculation 26
FU L LIN 27
Fuel supply system scheme 28
N60 NT M37OVERVIEW 1.5
APRIL 2004

Page Page
Fuel Pre-filter 29
Fuel filter 30
Pump assembly 31
Low pressure feed pump 32
Pressure control solenoid valve 34
Low pressure limiter valve 34
Pressure control with engine at maximum rating 35
Pressure control with engine at minimum rating 36
High pressure pump 37
Rail and high pressure piping 39
Two stage overpressure valve 39
lectro-injectors 40
Pressurization valve of the electro-injector backflow 42
DC 7 SYST M L CTRONIC
AND L CTRIC MAIN COMPON NTS 43
DC 7 lectronic Central Unit 44
Air pressure / temperature sensor 44
Atmospheric pressure sensor 44
Oil pressure / temperature sensor 45
Crankshaft sensor 45
Camshaft sensor 46
Coolant temperature sensor 46
Fuel temperature sensor 47
Fuel pressure sensor 47
Pressure control solenoid 48
Throttle lever position 48
SYST M FUNCTIONS 49
Run up 49
Starting 49
Metering and fuel injection 49
Injection advance management 49
Pre-injection 50
Injection pressure modulation 50
Idling adjusting 50
Selfdiagnosis 50
DC indicator light 50
Fuel Heating 50
Linearization of the acceleration gradient 50
Balance of the cylinder torque delivery 50
Rotation speed control 50
Top speed limitation 50
Cut off 50
De rating 50
Recovery 51
After run 51
N60 NT M37 OVERVIEW
1.6 APRIL 2004

IDENTIFYING DATA (to december 2003)
N60 NT M37OVERVIEW 1.7
APRIL 2004
IDENTIFYING DATA (from january 2004)
04_004_N
04_007_N
➠
➠
1
2
Viale dell'Industria, 15/17 - 20010 Pregnana Mil.se MI - ITALY
E GI E TYPE
E GI E DWG
E GI E S/
COMMERC. TYPE / VERSIO
POWER SET CODE
HOMOLOGATIO °
E GI E FAMILY
POWER (KW)
A D SPEED (RPM)
YEAR OF BUILD
S. p. A.
04_002_N
Figure 2
Figure 3
Figure 1

COMMERCIAL CODE
N60 NT M37 OVERVIEW
1.8 APRIL 2004
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 “ NGIN S/N”.
N60 E N T M 37 . 1 0
NGIN FAMILY ID NTIFI R: N = N F
DISPLAC M NT: 60 = 6000 cc NOMINAL
FU L SUPPLY: = L CTRONIC INJ CTION
BAS : N = NON STRUCTURAL
AIR INTAK : T = INT RCOOL D SUP RCHARG D
APPLICATION: M = MARIN
MAXIMUM P RFORMANC L V L ACHI VABL
37 = 370 HP
V RSION:
TURBOCHARG D:
1= COOL D
2= NOT COOL D
V RSION

PRODUCT MODEL NUMBER
N60 NT M37OVERVIEW 1.9
APRIL 2004
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.
F 4 A E 0 6 8 6 B *E 1 0 3
NGIN FAMILY ID NTIFI R
D SIGN IT RATION
NGIN
NO. OF STROK S AND CYLIND R DISPOSITION (0 = 4 STROK S,V RTICAL)
NO. OF CYLIND RS
FU L + INJ CTION (8 = DI S L,TCA, DIR CT INJ CTION)
INT ND D US (6 = MARIN )
POW R RANG :
B = MAXIMUM POW R 370 HP
= MISSION FOR
MARIN APPLICATION
VARIANTS TO
BASIC NGIN

ENGINE PARTS AND COMPONENTS
N60 NT M37 OVERVIEW
1.10 APRIL 2004
Figure 4
1. ngine coolant discharge cap - 2. lectric starter motor - 3.Tube bundle engine coolant/sea water heat exchanger -
4. Location of sacrificial anode - 5. Cooled exhaust manifold - 6. xhaust 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. ngine coolant tank - 14. Auxiliary 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
6910 11
8
12
13
15 14
1
04_006_N
7
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