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N67 MNT M28

1.2

OCTOBER 2005

FOREWORD

We  strongly  recommend  that  you  carefully  read  the  indi-

cations  contained  in  this  document:  compliance  with  them 

protects the engine against irregular operation and assures 

its reliability, safeguarding sea-going and maintenance person-

nel against accident hazards.
The  indications  contained  in  this  document  pertain  to  the 

N67 MNT M28 marine engine and complement the IVECO 

MOTORS publication of “Marine Diesel Engines Installation 

Handbook” that 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 required for individual personal safeguard 

while carrying out maintenance or checks.
Safety rules are reported in Section 9 of this publication.
Regulations on handling engine are reported at the end of 

Section 6 of this publication.
In  order  to  start  the  engine,  strictly  follow  the  procedure 

stated at the end of Section 5 of this 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 

stated by the manufacturer.
IVECO MOTORS is available beforehand to examine requi-

rements for special installations, if any.

In particular

q

  Use  of  unsuitable  fuels  and  oils  may  compromise  the 

engine’s  regular  operation,  reducing  its  performance, 

reliability and working life;

q

  Exclusive  use  of  IVECO  Original  Parts  is  a  necessary 

condition to maintain the engine in its original integrity;

q

  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 characteri-

stics 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

 P3D32N002 E

 - October 2005 Edition

Summary of Contents for N67 MNT M28

Page 1: ...NEF ENGINE N67 MNT M28 TECHNICAL AND REPAIR MANUAL OCTOBER 2005 EDITION T E C H N O L O G I C A L E X C E L L E N C E...

Page 2: ...sed for purposes other than those stated by the manufacturer IVECO MOTORS is available beforehand to examine requi rements for special installations if any In particular q Use of unsuitable fuels and...

Page 3: ...ns for consultation Sections 1 2 3 are intended for sales personnel to provide them with exact knowledge of the product s characteri stics and enable them to meet the Customer s demands with precision...

Page 4: ...N67 MNT M28 1 4 OCTOBER 2005...

Page 5: ...ming system driving gear 14 Cylinder head 16 Valves and valve seats 17 Ancillary machine parts drive 17 COMBUSTIONAIR INTAKE AND EXHAUST SYSTEM 18 Comburent air filter 19 Turbocompressor 19 Air sea wa...

Page 6: ...MNT M28 OVERVIEW 1 6 OCTOBER 2005 Page ENGINE OIL LUBRICATION LOOP 25 Gear pump 26 Filter bracket 26 Oil vapour recirculation 26 FUEL LINE 27 Fuel supply system scheme 28 Fuel pre filter 29 Fuel filte...

Page 7: ...a 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 Figure 1 Figure 2 The engine id...

Page 8: ...e commercial code therefore cannot be used for the technical purpose of recognizing the engine s components which is served by the ENGINE S N N 67 M N T M 28 1 0 ENGINE FAMILY IDENTIFIER N NEF DISPLAC...

Page 9: ...cation and power output level It is stamped on a side of crank case close to oil filter F 4 G E 0 6 8 6 A E 6 0 1 ENGINE FAMILY IDENTIFIER DESIGN ITERATION ENGINE NO OF STROKES AND CYLINDER DISPOSITIO...

Page 10: ...r discharge pipeline 7 Lifting eyebolt 8 Rocker arm covers 9 Oil refill cap 10 Location of thermostatic valve 11 Cap for engine coolant outlet to sanitary water heating system 12 Coolant refill cap 13...

Page 11: ...ficial anode 7 Wiring connectors 8 Combustion air sea water heat exchanger 9 Location of sea water discharge cap 10 Manual lubricating oil extraction pump 11 Oil dipstick 12 Lifting eyebolt 13 Oil sep...

Page 12: ...nd consumption reduction NEF engines can be fitted with a mechanical pump or a total electronic controlled Common Rail fuel supply system Every technical solution has been accurately devised so as to...

Page 13: ...de type with radial seal and require special fixtures to be assembled and disassembled Connecting Rods They are made in steel manufactured by pressing with small end oblique edged and cap separation o...

Page 14: ...ferent functions and different geo metry The 1st piston ring has a trapezoidal section and ceramic chrome plating The 2nd piston ring has a a torsional conical rectangular seal The 3rd piston ring has...

Page 15: ...d are fitted with cast babbitt lining steel bushings assembled by negative allowance The timing camshaft is set into rotation by the crankshaft with direct coupling to a straight toothed wheel 1 Rocke...

Page 16: ......

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