FPT C13 ENS M33 Operating instructions

C13 ENS M33
C13 ENT M50
TEChNiCal aNd REpaiR
MaNual
JUNE 2007 EDITION
TECHNOLOGICAL EXCELLENCE

1.2 JUNE 2007
C13 ENS M33
C13 ENT M50
FOREWORD
We strongly recommend that you carefully read the indica-
tions contained in this document: compliance with these indi-
cations protects the engine from irregular operation, assures
reliability, safeguards sea-going and protects maintenance
personnel from accident hazards.
The indications contained in this document pertain to the
C13 ENS M33 and C13 ENT M50 marine engines and com-
plement the IVECO MOTORS-FPT “Marine Diesel Engines
Installation Handbook”.You should refer to this for anything
that is not explained herein.
Technical engineers and fitters must comply with work safety
regulations. They must implement and adopt the methods
foreseen for personal safety while carrying out maintenance
or checks.
There is a reminder of the safety rules in Section 11 of the
present publication.
There is a reminder of the regulations for engine handling at
the end of Section 6 of the present publication.
To start the engine, you must adhere to the procedure
stated at the end of Section 5 of the present publication.
To get best engine performance you must conform with its
intended mission profile.The engine must not be used for
purposes other than those stated by the manufacturer.
IVECO MOTORS-FPT is available for a prior examination of
any requirements regarding special installations, should this
be necessary.
In particular
oUse of unsuitable fuels and oils may compromise the
engine’s regular operation, reducing its performance,
reliability and working life.
oExclusive use of IVECO Original Parts is a necessary
condition to maintain the engine in its original integrity.
oAny 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 the indications
shown on the engine tag;
- The number of the spare part.This can be found in the
spare part catalog.
The information provided below refers to engine character-
istics current at the date of publication.
IVECO MOTORS-FPT reserves the right to make modifica-
tions at any time and without advance notice, to meet tech-
nical 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-FPT
Technical Assistance Network is always at the Customer’s
side with its competence and professionalism.
IVECO MOTORS-FPT Publication edited by:
IVECO PowerTrain
Advertising & Promotion
Pregnana Milanese (MI)
www.ivecomotors.com
Printed P3D32C002 E- June 2007 Edition

C13 ENS M33
C13 ENT M50
SECTION CONTENTS
Section Page
1. OVERVIEW 5
2. TECHNICAL DATA 35
3. ELECTRICAL EQUIPMENT 41
4. DIAGNOSTICS 67
5. MAINTENANCE 89
6. SERVICING OPERATIONS
ON INSTALLED ENGINE 95
7. TOOLS 113
8. OVERHAUL 125
9. C13 ENS M33 ENGINE 197
10. SAFETY SYSTEM FOR
HOMOLOGATED INSTALLATIONS 209
11. SAFETY REGULATIONS 235
1.3
JUNE 2007
Indications for consultation
The several engine versions are usually explained with
common images and descriptions. In cases of considerable
differences, they are explained separately.
The specific characteristics of the C13 ENS M33 engine
electric system are described in Section 9.
Sections 1-2-3 are intended for sales personnel, to provide
them with an exact knowledge of the product’s character-
istics and enable them to accurately meet the Customer’s
requirements.
The remaining sections are intended for the personnel that
has the task of performing both ordinary and extraordinary
maintenance; by referring carefully to the chapter devoted to
diagnosis, they too will be able to provide an effective service
of technical assistance.

C13 ENS M33
C13 ENT M50
1.4 JUNE 2007
PAGE LEFT INTENTIONALLY BLANK

OVERVIEW 1.5 JUNE 2007 C13 ENS M33
C13 ENT M50
SECTION 1
IDENTIFICATION DATA 7
Identification Tag 7
COMMERCIAL CODE 8
PRODUCT MODEL NUMBER 9
ENGINE PARTS AND COMPONENTS 10
ENGINE ARCHITECTURE 12
COMBUSTION AIR INTAKE
AND EXHAUST SYSTEM 14
Air/sea water heat exchanger 15
Combustion air pre-heating 15
Intake and exhaust assembly 15
COOLING FRESH WATER CLOSED LOOP 16
Tube bundle water/water heat exchanger 17
Bypass junction for thermostatic valve 17
SEA WATER OPEN COOLING LOOP 18
Sea water pump 19
ENGINE OIL - LUBRICATION LOOP 20
Gear pump 21
Oil vapor filter 21
Pre-lubrication system (on request) 21
Commutable filters (on request) 21
FUEL LINES 22
Hydraulic schematic diagram 23
INJECTION SYSTEM - EDC 24
EUI electrically controlled pumping injector 25
Electrical and electronic components 28
System functions 30
Reference signals 32
OVERVIEW
Page

OVERVIEW
1.6 JUNE 2007
C13 ENS M33
C13 ENT M50
PAGE LEFT INTENTIONALLY BLANK

OVERVIEW 1.7 JUNE 2007 C13 ENS M33
C13 ENT M50
Figure 2
The engine identification data are stenciled on a tag positioned over the engine coolant tank.
Figure 1
Identification Tag
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
IDENTIFICATION DATA
05_001_C

OVERVIEW
1.8 JUNE 2007
C13 ENS M33
C13 ENT M50
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 and to identify the engine’s components, this is the purpose of the “ENGINE S/N”.
COMMERCIAL CODE
C 13 E NTM50 . 1 0
ENGINE FAMILY IDENTIFIER: C = CURSOR
DISPLACEMENT: 12.880 c.c.
FUEL SUPPLY: E = ELECTRONIC INJECTION
BLOCK: N = NON STRUCTURAL
AIR INTAKE:T = INTERCOOLED SUPERCHARGED
APPLICATION: M = MARINE
MAXIMUM PERFORMANCE LEVEL ACHIEVABLE
50 = 500 HP
VERSION:
TURBOCOMPRESSOR:
1= COOLED
2= NOT COOLED
VERSION

OVERVIEW 1.9 JUNE 2007 C13 ENS M33
C13 ENT M50
PRODUCT MODEL NUMBER
The model number is assigned by the manufacturer; it is used to identify the main characteristics of the engine, and to character-
ize its application and power output level. It is stamped on the side of the crank-case.
F 3 B E 0 6 8 6 C *B
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
ACTUAL POWER OUTPUT
VARIANTS TO
BASIC ENGINE
2 0 1

OVERVIEW
1.10 JUNE 2007
C13 ENS M33
C13 ENT M50
ENGINE PARTS AND COMPONENTS
Figure 3
1. Intake air filter - 2. Location of intake air pressure and temperature sensor - 3. Lubricating oil refill cap - 4. Lifting padeyes - 5. CoolantLocation of intake air pressure and temperature sensor - 3. Lubricating oil refill cap - 4. Lifting padeyes - 5. Coolantntake air pressure and temperature sensor - 3. Lubricating oil refill cap - 4. Lifting padeyes - 5. Coolant
level sensor - 6. Engine coolant tank - 7. Coolant refill cap - 8. Injector solenoid valve connector - 9. Location of thermostatic valveEngine coolant tank - 7. Coolant refill cap - 8. Injector solenoid valve connector - 9. Location of thermostatic valve- 7. Coolant refill cap - 8. Injector solenoid valve connector - 9. Location of thermostatic valve
10. Cap for engine coolant outlet to sanitary water heating system 11. Alternator location - 12. Coolant-sea water tube bundle
heat exchanger - 13. Auxiliary pulley - 14. Oil drain sump plug - 15. Sacrificial anodes - 16. Sea water intake - 17. Sea water drain
plug - 18. Air-sea water heat exchanger (not present on the C13 ENS M33 engine) - 19. Sea water pump - 20 Electrical starter
motor - 21. Fuel transfer pump - 22. Fuel filter - 23. Filter clogging sensor - 24. Fuel temperature sensor.
05_117_C
15
6
7
4
8
9
10
11
13
14
17
21
22
23
24
20
3
24
12
1516
18
19