Iveco N45 MNA, N45 MSA, N45 MNS, N45 MSS, N45 MNT Operating Manual

NEF SERIES

MECHANICAL INJECTION
SYSTEM

INTRODUCTION

We would like to thank you for buying an IVECO MOTORS
product, and compliment you on your choice of engine.
Before you carry out any operation involving the engine or its
fittings, please read the contents of this manual carefully; compliance
with the instructions provided in the manual is the best way to
guarantee trouble-free, long term operation of the engine.

N45 MNA - N45 MSA (TIER 2)
N45 MNS - N45 MSS (TIER 2/3)
N45 MNT - N45 MST (TIER 2/3)
N67 MNA - N67 MSA (TIER 2)
N67 MNT (TIER 2/3)
N67 MST (TIER 2)
NEF 45 SM1/SM2
NEF 45 TM1/TM2
NEF 67 SM1
NEF 67 TM2/TM3

SE AND MAINTENANCE

U

The contents of this manual refer to the standard configuration of
the engine, and the illustrations are purely indicative. Some
instructions are provided by giving the sequence of operations to be
carried out in order to allow the engine and/or its fittings to
perform in a certain way. In some cases they will be dependent on
the configuration of the commands and the set-up of the machine
on which the engine is installed; for any points that differ from the
contents of this manual, please consult the instructions provided by
the machine Manufacturer or a specific manual.
The information provided below was current at the date of
publication.
The Manufacturer reserves the right to make modifications at any
time without prior notice, for technical or commercial reasons or
to update the engines to comply with legal requirements in the
various Countries.
The Manufacturer declines all liability for any errors or omissions.

Please remember that the IVECO MOTORS Technical Service
Network is available to offer you its experience and professional
skills, wherever you may be.

1

ENGLISH

TABLE OF CONTENTS

Page

 GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Guarantee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Engine technical data N45 MNA - N45 MSA. . . . . . . . . . . . . . . . .4
Engine technical data N45 MNS / MSS / MNT / MST . . . . . . . . . . 6
Engine technical data N67 MNA/MSA/MNT/MST. . . . . . . . . . . . . 8
Engine technical data NEF 45 SM1/SM2 - TM1/TM2 . . . . . . . . .10
Engine technical data NEF 67 SM1 - TM2/TM3 . . . . . . . . . . . . .12
Signs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

 USE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Preliminary checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Starting and stopping the engine . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Recognising alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Engine pre-heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
For proper use of the engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Special warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Running in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Refuelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

 CONTROLS AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . .23

Maintenance personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Accident prevention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
How to proceed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Moving the engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Disposal of waste . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Page

 LONG PERIODS OF INACTIVITY . . . . . . . . . . . . . . . . . . . . . . .35

Preparing the engine for a long period of inactivity . . . . . . . . . . .35
Restarting the engine after a long period of inactivity . . . . . . . . .36

 BEHAVIOUR IN AN EMERGENCY. . . . . . . . . . . . . . . . . . . . . . .37
 IN APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Oil viscosity level according to surrounding temperatures . . . . . . .
Electronic control panel use requirements . . . . . . . . . . . . . . . . . . . .

2

 GENERAL INFORMATION

GUARANTEE

In order to ensure that your engine gives the best possible
performance and to take advantage of the IVECO MOTORS
guarantee, you must follow the indications provided in this
publication with great care; failure to do so may result in invalidation
of the guarantee.

SPARE PARTS

Always use Original IVECO MOTORS Spare parts. This is essential
to keep the engine in original running order.
The use of non-original spare parts will not only invalidate the
guarantee, but will mean that IVECO MOTORS will not be
considered liable in any way during the whole working life of the
engine.

LIABILITY

The Manufacturer will only be considered liable subject to
performance of the control and maintenance operations indicated
and described in this manual; to this effect, proof that these
operations have been performed must be provided. Any special
maintenance operations that may be necessary must be carried out
by qualified technicians from authorised Workshops in the IVECO
MOTORS Network, using the instruments and equipment provided
for the purpose.

SAFETY

The following information is intended to encourage caution when
using the engine, so as to avoid damage to persons or property as a
result of improper or incorrect behaviour.

 The engines must only be used for the purposes indicated by the

Manufacturer.

 Any tampering, modification and use of non-original spare parts

may compromise proper operation and safe use of the engine

never, under any circumstances

wiring and to the units equipping the engine, or connect them

the
to other power systems.

 Pay particular attention to moving parts of the engine, to high

temperature components and to circuits containing pressurised
fluids; its electrical equipment houses electrical currents and
voltage.

 The exhaust fumes produced by the engine are bad for your

health.



The engine must be handled using suitable lifting tackle, making
use of the U-bolts provided on the engine for that purpose.

 The engine must not be started up and used until the machine in

which it installed has satisfied all necessary safety requirements,
or until the machine has been guaranteed to comply with local
laws and regulations.

 The operations required to guarantee the best possible use and

preservation of the engine must only be carried out by persons
of proven experience, equipment with tools considered suitable
by IVECO MOTORS.

For the purpose of safety, further recommendations are given in the
chapter CONTROLS AND MAINTENANCE.

make modifications to

;

ENGLISH

3

ENGINE TECHNICAL DATA N45 MNA - N45 MSA

The technical code and serial number are indicated on a plate, which
is located on different parts of the engine, according to the model:
flywheel casing, tappet cover, other.

Code N45 MNA / MSA

Engine family F4

Cycle 4-stroke diesel

Number and arrangement
of cylinders 4, in line

Bore x stroke 104 x 132 mm

Total displacement 4,500 cm

Air system Aspiration

Injection type Direct with rotating pump

Engine direction of
rotation

Anticlockwise (seen from
flywheel side)

Dry weight 380 kg

Electrical system 12 V

Accumulator/s

- capacity

- discharge current

100 Ah or above
650 A or above

3

Performance: Maximum power (*)

Maximum torque

N45 MNA / MSA 60 kW (81 CV) @ 2300 rpm

320 Nm (33 Kgm) @ 1400 rpm

(*)Net power to the flywheel in compliance with ISO 3046-1. Test

conditions: temperature 25 °C; atmospheric pressure 100 kPa;
relative humidity 30%.

WARNING

Any alteration of the above mentioned characteristics is strictly
prohibited, penalty invalidation of the guarantee and absence of all
liability on the part of IVECO MOTORS.

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05_591_N

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Engine N45 MNA - N45 MSA

1. Auxiliary member drive belt - 2. Fuel filter - 3. Oil filler cap - 4.
Fuel outlet connector to tank - 5. Engine air inlet - 6. Lifting U-bolt

- 7. Injection pump - 8. Cold injection timing variator - 9. Fuel inlet
manifold from tank - 10. Fuel supply pump - 11. Oil drainage plug -

12. Oil dipstick - 13. Fuel filter condensation drainage plug.

05_592_N

Engine N45 MNA - N45 MSA

1. Exhaust manifold - 2. Oil vapour bleeder - 3. Exhaust outlet -

4. Lifting U-bolt - 5. Engine coolant outlet - 6. Location of
thermostat valve - 7. Alternator - 8. Engine coolant inlet - 9.
Lubricant oil filter - 10. Electrical starter motor.

5

ENGINE TECHNICAL DATA N45 MNS/MSS/MNT/MST

The technical code and serial number are indicated on a plate, which
is located on different parts of the engine, according to the model:
flywheel casing, tappet cover, other.

Code N45 MNS/MSS/MNT/MST

Engine family F4

Cycle 4-stroke diesel

Number and arrangement
of cylinders 4, in line

Bore x stroke 104 x 132 mm

Total displacement 4,500 cm

Air system Supercharged - Aftercooled

Injection type Direct with rotating pump

Engine direction of
rotation

Anticlockwise (seen from
flywheel side)

Dry weight 390 kg

(1) Excluding engines N45 MNS / MSS

3

(1)

Performance TIER2 Maximum power (*)

Maximum torque

N45 MNS / MSS 74 kW (100 CV) @ 2300 rpm

398 Nm (40.5 Kgm) @ 1400 rpm

N45 MNT / MST 82 kW (111 CV) @ 2200 rpm

480 Nm (48.9 Kgm) @ 1400 rpm

N45 MNT / MST 94 kW (128 CV) @ 2300 rpm

500 Nm (50.9 Kgm) @ 1400 rpm

Performance TIER3 Maximum power (*)

Maximum torque

N45 MNS / MSS 66 kW (89 CV) @ 2200 rpm

362 Nm (36.9 Kgm) @ 1400 rpm

N45 MNT / MST 74 kW (100 CV) @ 2200 rpm

397 Nm (40.5 Kgm) @ 1400 rpm

N45 MNT / MST 93 kW (126 CV) @ 2200 rpm

520 Nm (53 Kgm) @ 1400 rpm

(*)Net power to the flywheel in compliance with ISO 3046-1. Test

conditions: temperature 25 °C; atmospheric pressure 100 kPa;
relative humidity 30%.

Electrical system 12 V

Accumulator/s

- capacity

- discharge current

100 Ah or above
650 A or above

WARNING

Any alteration of the above mentioned characteristics is strictly
prohibited, penalty invalidation of the guarantee and absence of all
liability on the part of IVECO MOTORS.

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05_595_N

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Engine N45 MNS/MSS/MNT/MST

1. Auxiliary member drive belt - 2. Fuel filter - 3. Oil filler cap - 4.
Fuel outlet connector to tank - 5. Oil vapour bleeder - 6. Lifting U­bolt - 7. Injection pump - 8. Cold injection timing variator - 9. Fuel
inlet manifold from tank - 10. Fuel pump - 11. Oil drainage plug -

12. Oil dipstick - 13. Fuel filter condensation drainage plug.

05_596_N

EngineN45 MNS/MSS/MNT/MST

1. Exhaust manifold - 2. Turbocharger air inlet - 3. Turbocharging air
outlet ( only for N45 MNT / MST engines) - 4. Turbocharger -

5. Turbocharger exhaust outlet - 6. Engine air inlet - 7. Lifting U-bolt

- 8. Engine coolant outlet - 9. Location of thermostat valve -

10. Alternator - 11. Engine coolant inlet - 12. Oil filter - 13. Electric
starter motor.

7

ENGINE TECHNICAL DATA N67 MNA/MSA/MNT/MST

The technical code and serial number are indicated on a plate, which
is located on different parts of the engine, according to the model:
flywheel casing, tappet cover, other.

Code N67 MNA/MSA/MNT/MST

Engine family F4

Cycle 4-stroke diesel

Number and arrangement
of cylinders 6, in line

Bore x stroke 104 x 132 mm

Total displacement 6,700 cm

Air system Supercharged and aftercooled

Injection type Direct with rotating pump

Engine direction of rotation Anticlockwise (seen from flywheel

side)

Dry weight 530 kg

(1) Excluding engines N67 MNA / MSA

Electrical system 12 V

Accumulator/s

- capacity

- discharge current

180 Ah or above
950 A or above

3

(1)

Performance TIER2 Maximum power (*)

Maximum torque

N67 MNA / MSA 81 kW (110 CV) @ 2500 rpm

440 Nm (45 Kgm) @ 1400 rpm

N67 MNT / MST 120 kW (163 CV) @ 2300 rpm

630 Nm (64 Kgm) @ 1400 rpm

N67 MNT / MST 129 kW (175 CV) @ 2300 rpm

700 Nm (71 Kgm) @ 1400 rpm

Performance TIER3 Maximum power (*)

Maximum torque

N67 MNT 129 kW (175 CV) @ 2200 rpm

720 Nm (73 Kgm) @ 1400 rpm

(*)Net power to the flywheel in compliance with ISO 3046-1. Test

conditions: temperature 25 °C; atmospheric pressure 100 kPa;
relative humidity 30%.

WARNING

Any alteration of the above mentioned characteristics is strictly
prohibited, penalty invalidation of the guarantee and absence of all
liability on the part of IVECO MOTORS.

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05_597_N

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Engine N67 MNA/MSA - N67 MNT/MST

1. Auxiliary member drive belt - 2. Fuel filter - 3. Oil filler cap - 4.
Engine intake manifold - 5. Fuel outlet connector to tank - 6. Lifting
U-bolt - 7. Injection pump - 8. Cold injection timing variator -

9. Fuel inlet manifold from tank - 10. Fuel supply pump - 11. Oil
drainage plug - 12. Oil dipstick - 13. Fuel filter condensation drainage
plug.

05_598_N

EngineN67 MNA/MSA - N67 MNT/MST

1. Exhaust manifold - 2. Oil vapour bleeder - 3. Turbocharger air
inlet - 4. Turbocharging air outlet (*) - 5. Turbocharger (*) - 6.
Turbocharger exhaust outlet (*) - 7. Lifting U-bolt - 8. Engine
coolant outlet - 9. Location of thermostat valve - 10. Alternator -

11. Engine coolant inlet - 12. Lubricant oil filter - 13. Electrical
starter motor.
(*) Only for versions MNT/MST

9

ENGINE TECHNICAL DATA NEF 45 SM - TM

The technical code and serial number are indicated on a plate, which
is located on different parts of the engine, according to the model:
flywheel casing, tappet cover, other.

Code NEF 45 SM1/SM2 - TM1/TM2

Engine family F4

Cycle 4-stroke diesel

Number and arrangement
of cylinders 4, in line

Bore x stroke 104 x 132 mm

Total displacement 4,500 cm

Air system Supercharged - Aftercooled

Injection type Direct with rotating pump

Engine direction of
rotation

Anticlockwise (seen from
flywheel side)

Speed regulator Mechanical

Dry weight 500 kg

1) Excluding versions SM

Electrical system 12 V

Accumulator/s

- capacity

- discharge current

100 Ah or above
650 A or above

3

(1)

Performance

(*)

NEF 45 SM1

(50 Hz) Prime 53.5 kWm @ 1500 rpm

Stand by 59 kWm @ 1500 rpm

(60 Hz) Prime 59

kWm @ 1800 rpm

Stand by 65 kWm @ 1800 rpm

Performance

(50 Hz) Prime 66

(*)

NEF 45 SM2

kWm @ 1500 rpm

Stand by 73 kWm @ 1500 rpm

(60 Hz) Prime 65

kWm @ 1800 rpm

Stand by 72 kWm @ 1800 rpm

Performance

(*)

NEF 45 TM1

(50 Hz) Prime 77 kWm @ 1500 rpm

Stand by 85 kWm @ 1500 rpm

(60 Hz) Prime 86

kWm @ 1800 rpm

Stand by 95 kWm @ 1800 rpm

Performance

(50 Hz) Prime 88

(*)

NEF 45 TM2

kWm @ 1500 rpm

Stand by 97 kWm @ 1500 rpm

(60 Hz) Prime 98

kWm @ 1800 rpm

Stand by 107 kWm @ 1800 rpm

(*)Values in compliancewith ISO 8528.

WARNING

Any alteration of the above mentioned characteristics is strictly prohibited,
penalty invalidation of the guarantee and absence of all liability on the
part of IVECO MOTORS.

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05_611_N

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Engine NEF 45 SM - TM

1. Heat exchanger/s - 2. Coolant filler cap - 3. Oil filler cap - 4.
Engine air inlet manifold - 5. Oil vapour bleeder - 6. Lifting U-bolt -

7. Air filter - 8. Injection pump - 9. Fuel outlet connector to tank -

10. Fuel inlet manifold from tank - 11. Hand pump - 12. Oil dipstick

- 13. Fuel filter condensation drainage plug - 14. Fuel filter.
*) Excluding versions SM

05_612_N

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EngineNEF 45 SM - TM

1. Exhaust manifold - 2. Turbocharger air intake - 3. Turbocharging
air outlet - 4. Turbocharger- 5. Exhaust outlet - 6. Lifting U-bolt -

7. Coolant outlet manifold from engine - 8. Location of thermostat
valve - 9. Engine coolant inlet connector sleeve - 10. Fan -

11. Alternator - 12. Lubricant oil discharge plug - 13. Oil filter -

14. Electrical starter motor.
*) Excluding versions SM

11

ENGINE TECHNICAL DATA NEF 67 SM - TM

The technical code and serial number are indicated on a plate, which
is located on different parts of the engine, according to the model:
flywheel casing, tappet cover, other.

Code NEF 67 SM1 - TM2/TM3

Engine family F4

Cycle 4-stroke diesel

Number and arrangement
of cylinders 6, in line

Bore x stroke 104 x 132 mm

Total displacement 6,700 cm

Air system Supercharged - Aftercooled

Injection type Direct with rotating pump

Engine direction of
rotation

Anticlockwise (seen from
flywheel side)

Speed regulator Mechanical

Dry weight 530 kg

1) Excluding versions SM

Electrical system 12 V

Accumulator/s

- capacity

- discharge current

180 Ah or above
950 A or above

3

(1)

Performance

(*)

NEF 67 SM1

(50 Hz) Prime 110 kWm @ 1500 rpm

Stand by 121 kWm @ 1500 rpm

(60 Hz) Prime 126 kWm @ 1800 rpm

Performance

Stand by 138

(*)

NEF 67 TM2

kWm @ 1800 rpm

(50 Hz) Prime 114 kWm @ 1500 rpm

Stand by 125 kWm @ 1500 rpm

(60 Hz) Prime 127 kWm @ 1800 rpm

Stand by 140 kWm @ 1800 rpm

Performance

(*)

NEF 67 TM3

(50 Hz) Prime 138 kWm @ 1500 rpm

Stand by 152 kWm @ 1500 rpm

(60 Hz) Prime 150 kWm @ 1800 rpm

Stand by 165 kWm @ 1800 rpm

(*)Values in compliance with ISO 8528.

WARNING

Any alteration of the above mentioned characteristics is strictly
prohibited, penalty invalidation of the guarantee and absence of all
liability on the part of IVECO MOTORS.

12