MTU ValueService Technical Documentation Technical Documentation Diesel engine-generator sets with MTU Series 1600, 2000 and 4000 engines Preservation and Represervation Specifica

MTU_ValueServiceTechnical Documentation

Diesel engine-generator setswwith MTU Series 1600, 2000 and 4000engines

Preservation and Represervation Specifica‐tionsA001071/00E

Printed in Germany

© 2013 Copyright MTU Friedrichshafen GmbH

This Publication is protected by copyright and may not be used in any way whether in whole or in part without the priorwritten permission of MTU Friedrichshafen GmbH. This restriction also applies to copyright, distribution, translation, mi-crofilming and storage or processing on electronic systems including data bases and online services.

This handbook is provided for use by maintenance and operating personnel in order to avoid malfunctions or damageduring operation.

Subject to alterations and amendments.

Table of Contents1 General Information

1.1 General information 41.2 Safety instructions for handling

preservatives 6

2 Preservation and Represervation

2.1 Notes on preservation and represervation 72.2 Check sheet for preservation and

represervation 8

3 Approved Preservatives

3.1 Requirements for preservatives 103.2 Corrosion Inhibitor for Internal Preservation 11

3.2.1 Corrosion inhibitors for the oil circuit and thecombustion chamber 11

3.2.2 Corrosion inhibitor for coolant circuit 123.2.3 Corrosion inhibitor for the diesel fuel system 14

3.3 Corrosion inhibitors for externalpreservation 15

3.4 Preservatives for non-engine components 16

4 Represervation Intervals

4.1 Dependency between storage conditionsand type of packaging 17

4.2 Interpretation examples 184.3 Represervation Intervals of Media Circuits 19

4.3.1 Intervals with filled media circuits 194.3.2 Intervals with unfilled media circuits 21

4.4 Represervation intervals for non-enginecomponents 22

5 (Re)preservation with Engine-Generator SetOperation Option

5.1 Short service interruption of up to onemonth 23

5.2 Service Interruption of 1 to 3 Months 245.2.1 Storage for 1 to 3 months with filled media

circuits 245.2.2 Storage for 1 to 3 months with unfilled media

circuits 25

5.3 Service Interruption of more than 3 Months 265.3.1 Storage for more than 3 months with filled

media circuits 265.3.2 Storage for more than 3 months with unfilled

media circuits 28

6 (Re)preservation without Engine-Generator SetOperation Option

6.1 Storage with filled media circuits 306.2 Storage with unfilled media circuits 32

7 Depreservation

7.1 Depreservation prior to operation 347.2 Instruction sheet for depreservation if

climate-compatible packaging is used 35

8 Packaging

8.1 Types of packaging 368.2 Climate-compatible packaging – Design 378.3 Climate-compatible packaging – Installation 408.4 Climate-compatible packaging – Check and

repair 458.5 Monitoring Sheet for engines with climate-

compatible packaging 46

9 Overview of Changes

9.1 Overview of change to previous edition 47

10 Index

10.1 Index 48

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1 General Information

1.1 General information

Used symbols and means of representation

The following instructions are highlighted in the text and must be observed:

This symbol indicates instructions, tasks and operations that must be followed to avoid hazardsto persons as well as damage to or destruction of material.

Note

A "note" provides special instructions that must be observed when performing a task.

Applicability of this publicationThe "Preservation and Represervation Specifications for Diesel engine-generator sets with MTU Series1600, 2000 and 4000 engines" will be amended or supplemented as necessary. Before using them,contact MTU Onsite Energy Service to make sure you have the latest version of this publication (publi-cation number A001071/..).

The current amendment status of these preservation specifications is shown in the Overview ofChanges (→ Page 47).

Other applicable documents• MTU Fluids and Lubricants Specifications for engine-generator sets (publication number A001064/..)• MTU Preservation and Represervation Specifications for engines (publication number A001070/..)• Preservation specifications of the gearbox manufacturer• Engine-generator set documentation• Safety data sheets for preservation media• MTU packaging manual

Validity of the preservation specificationsThese preservation specifications define the media for preservation/represervation (preservatives) andthe guidelines for depreservation and packaging of MTU diesel engine-generator sets.

The preservation specifications apply to all diesel engine-generator sets from MTU Onsite Energy follow-ing delivery from the factory:

• Reserve stock engine-generator sets• Installed engine-generator sets that have not yet been put into service• Field engine-generator sets with extended downtime, e.g. normal out-of-service periods, out-of-serv-

ice periods for scheduled maintenance or unscheduled repair work.

The preservation/represervation scope is the same for all engine-generator set models.

In addition to these preservation specifications, the corresponding engine-generator set documentationmust also be observed. Work and tests during an interruption of operation and prior to a renewed start-up are to be performed according to the engine-generator set documentation.

The measures described in the following sections are restricted to the MTU engine-generator set.

WarrantyUse of the approved preservatives, either under the brand name or in accordance with the specifica-tions given in this publication, constitutes part of the warranty conditions.

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The supplier of the preservatives is responsible for the worldwide standard quality of the named prod-ucts.

As the represervation intervals and the media also depend on the storage conditions and typeof packaging, the warranty shall become invalid in the event of incorrect storage or packaging.

These regulations are contained in the manufacturers' instructions, legal requirements and technicalguidelines valid in the individual countries. Great differences can apply from country to country and agenerally valid guide to applicable regulations for preservatives is therefore not possible within this pub-lication.

Users of the products named in these specifications are therefore obliged to inform themselves of thelocally valid regulations. MTU accepts no responsibility whatsoever for improper or illegal use of thepreservatives which it has approved.

MTU Onsite Energy recommends contacting the supplier of all preservatives to obtain Material SafetyData Sheets before storing, handling and usage.

Registered trademarksAll brand names are registered trademarks of the respective manufacturers.

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1.2 Safety instructions for handling preservatives

Preservatives for drive systems can be inherently dangerous. Certain regulations must beobeyed when handling, storing and disposing of these substances.

These regulations are contained in the manufacturers' instructions, legal requirements and technicalguidelines valid in the individual countries. Great differences can apply from country to country and agenerally valid guide to applicable regulations for preservatives is therefore not possible within this pub-lication.

Users of the products named in these specifications are therefore obliged to inform themselves of thelocally valid regulations. MTU Onsite Energy accepts no responsibility whatsoever for improper or illegaluse of the preservatives which it has approved.

Safe disposal

To avoid environmental pollution and violation of regulatory requirements, dispose used fluidsand lubricants in accordance with local regulations.Never dispose of or burn used oil in the fuel tank.

Regulations for disposal of fluids and lubricants vary by location. Environmental protection is one of thefundamental corporate objectives of MTU Onsite Energy, therefore, it is recommended that fluids andlubricants be recycled where available. If recycling is not available, MTU Onsite Energy recommendscontacting the local waste disposal authority, before dispose any fluids and lubricants to determine thebest option. Users of the products named in these specifications are, therefore, obliged to inform them-selves of the locally valid regulations for disposal. MTU accepts no responsibility whatsoever for im-proper or illegal disposal of the fluids and lubricants which it has approved for use.

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2 Preservation and Represervation

2.1 Notes on preservation and represervation

Preservation"Preservation" refers to:• initial preservation in the factory,• the preservation of a field engine-generator set prior to an extended out-of-service period.

MTU engine-generator sets are usually delivered with initial engine preservation as per factory standardMTV 5073. This is generally carried out during the acceptance test on the test bench.

In the event of long operation interruptions, machined and unprotected surfaces, such as cylinder run-ning surfaces, are prone to corrosion and therefore need to be preserved.

Preservation measures are carried out in the same manner as represervation. The scope of (re-)preser-vation depends on the duration of the out-of-service period.

Field engine-generator sets and such that were put out-of-service for a scheduled major over-haul must be preserved immediately after their last service period.

Coolant circuits must always be preserved after the coolant has been drained. Preservation isnot required if the coolant is left in the system.

Preservation must be repeated at regular intervals (represervation).

Represervation"Represervation" refers to the renewal of already existing preservation at specified time intervals.

The intervals differ for internal and external represervation and – for internal represervation – accordingto the different media (oil, fuel, coolant) and filling levels. For represervation intervals, refer to(→ Page 19) and (→ Page 21).

As the represervation intervals and the media also depend on the storage conditions and typeof packaging, the warranty shall become invalid in the event of incorrect storage or packaging.

For storage and transport conditions, see (→ Page 17).

PreservativesThe service life, operational reliability and function of the drive systems are largely dependent on thefluids, lubricants and preservatives employed. The correct selection and treatment of these fluids, lubri-cants and preservatives are therefore extremely important.

For preservation and represervation of MTU engine-generator sets, only the preservatives approved inthese preservation specifications must be used (→ Page 10).

Documentation requirementsPreservation, represervation, depreservation and monitoring of an engine-generator set with climate-compatible packaging must be documented by the person responsible:• (Re-)preservation check sheet (→ Page 8)• Instruction sheet for depreservation if climate-compatible packaging is used (→ Page 35)• Monitoring sheet for engines with climate-compatible packaging (→ Page 46)

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2.2 Check sheet for preservation and represervation

All preservation work that is performed must be recorded on the check sheet shown below. Forengine-generator sets stored with a manufacturer guarantee, the Monitoring Sheet (→ Page 46)must also be filled out and sent back to MTU Onsite Energy in due time before putting the en-gine-generator set back into operation.

Correct completion of the preservation tasks as specified in the preservation specifications must becertified on this check sheet by the person completing the various tasks.

Engine-generator set model: Engine-generator set number: Acceptance date:

Tasks performed Date NameLube oil system

• Preserved with preservation oil.• Oil brand used: ..............................• Opening of lube oil pump, if fitted, is sealed.Fuel system

• Preserved with preservative fuel.• Fuel filter, prefilter, cooler and fuel lines have not been drained.• Preservative fuel used: ..............................Cooling system, filled

• Preserved with prepared coolant. The cooling system is filled toa level which exceeds the filler neck base of the cooler, if fitted.

• Coolant is not drained.• Coolant brand used: ..............................Cooling system, unfilled

• Preserved with an approved corrosion inhibitor for internal pres-ervation of the coolant circuit

• Corrosion inhibitor is drained.• Corrosion inhibitor used: ..............................Combustion chamber

• Preserved with preservation oil.• Oil brand used: ..............................External electrical components, if fitted

• All components with external power supply are de-energized.This applies e. g. to:– Battery charger– Control panel– Circuit breakers – spring is released– Automatic transfer switch – spring is released– Components of fuel and cooling systems

• Starter batteries are disconnected and dismounted.Non-painted parts

• Unpainted blank parts, such as flywheel, starter ring gear, starterpinion, blank connections of electrical components are treatedwith corrosion inhibitor.

• Corrosion inhibitor used: ..............................• Generator unpainted flanges, shafts, drive discs and fittings are

treated with corrosion inhibitor.• Corrosion inhibitor used for generator: ..............................

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Tasks performed Date NameMiscellaneous

• Remaining engine openings are sealed as specified.• Generator bearings are lubricated.• Lubricating grease used: ..............................Engine-generator set is preserved as specified.

Represervation performed according to instructions.

Further procedure1. After completing preservation work, put the completed check sheet into a closed plastic sleeve.2. Seal the sleeve at the open side and attach it to the engine-generator set so that it is clearly visible.3. Store the check sheet until depreservation beside the engine-generator set and send back to

MTU Onsite Energy in good time before initial operation.

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3 Approved Preservatives

3.1 Requirements for preservativesThese preservation specifications define the preservatives for the preservation and represervation ofMTU engine-generator sets.

Preservatives are divided into groups according to their operating areas:• Corrosion inhibitors for internal preservation of the oil circuit and the combustion chamber, the cool-

ant circuit and the fuel system• Corrosion inhibitors for external preservation• Preservatives for non-engine components

Test standards for preservativesThe following test standards are used for the evaluation and selection of preservatives for MTU engine-generator sets:

Test standard DesignationDIN Federal German Standards InstituteEN European StandardsISO International standardASTM American Society for Testing and MaterialsIP Institute of Petroleum

Approval of preservativesFor preservation and represervation of MTU engine-generator sets, only the preservatives approved inthese preservation specifications must be used.

The conditions for the approval of preservatives are defined in MTU delivery standards (MTL):• MTL 5051 for initial operation and preservative oil• MTL 5052 for corrosion inhibitors for external preservation

The preservation product manufacturer is informed in writing if his product is approved by MTU.

Note on initial operationBefore initial operation, the engine-generator set has to be depreserved (→ Page 34).

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3.2 Corrosion Inhibitor for Internal Preservation

3.2.1 Corrosion inhibitors for the oil circuit and the combustion chamber

The media in the table are suitable for both internal preservation of the oil circuit and preservation ofthe combustion chamber.

Manufacturer Brand name Part No. Remarks Suitability forpreservation of

oil circuit

filled unfilledCepsa LubricantesS.A.

Cepsa Rodaje Y Pro-teccion SAE 30

– Full-load engine oil asper Oil Category 1

x x

Exxon Mobil Mobilarma 524 – Preservative oil: Onlyapproved for preserva-tion run

x x

Fuchs Titan Universal HD30 MTU

X00058057(barrel)X00013236(tanker)

Full-load engine oil asper Oil Category 2

x x

SRS SchmierstoffVertrieb GmbH

SRS AntikorrolM Plus SAE 30

X00058336(barrel)X00058338(tanker)

Full-load engine oil asper Oil Category 2

x x

SRS MotorenölO-236 SAE 15W-40

X00057300 Full-load engine oil asper Oil Category 2

x x

Shell Shell Running-In Oil7294 SAE 30

– Preservative oil: Onlyapproved for preserva-tion run

x x

Shell Rimula R6 LM(SL1407)SAE 10W-40

X00065012 Full-load engine oil asper Oil Category 3.1with additional corro-sion protection

x x

x Suitable for preservation

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3.2.2 Corrosion inhibitor for coolant circuit

Manufac-turer

Brand name Part No. Remarks Suitability forpreservation ofcoolant circuit

filled unfilledBASF Glysacorr P113 *)

(aqueous)X00046660 9 to 11 % vol. application concen-

tration• Optimum corrosion protection

during draining < 40 °C• Reduced corrosion protection

during hot draining• 100 h maximum operating pe-

riod• Not an engine coolant!

– x

BASF Glysacorr P113Antifreeze *)

(propylene glycolbasis)

X00055338 40 to 50 % vol. application concen-tration• Optimum corrosion protection

during draining < 40 °C• Reduced corrosion protection

during hot draining• 100 h maximum operating pe-

riod• Antifreeze protection

up to -18 °C at 40 % vol.up to -28 °C at 50 % vol.

• Not an engine coolant!

x x

HoughtonDeutsch-land GmbH

Oil 9156 *)

(emulsion)– 1 to 2 % vol. application concentra-

tion• The engine must be flushed

prior to filling with actual en-gine coolant

• Exception: If Oil 9156 is ap-proved as coolant additive forthe relevant series; see "Fluidsand Lubricants Specifications"(A001064/..)

– x

Others All corrosion inhib-iting antifreezesapproved for therespective seriesin accordance withthe "Fluids and Lu-bricants Specifica-tions"(A001064/..)

– The engine can then be operatedwith this engine coolant. Precondi-tion:• Corrosion inhibiting antifreeze

is approved for engine opera-tion

• Shelf life not expired

x –

x Suitable for preservation– Unsuitable for preservation

*) In the following section also referred to as inhibitor concentration, see Information:

In contrast to coolants, inhibitor concentrations also protect the coolant circuit against corro-sion when drained.As inhibitor concentrations can also contain vapor-phase inhibitors, ensure that the coolant cir-cuits are always hermetically sealed to prevent inhibitors from escaping, thus reducing the cor-rosion protection.


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Aqueous corrosion inhibitors are not approved for engine-generator set preservation when fil-led. Reason: Lack of antifreeze protection and susceptibility to microbiological attack.

When mixing coolant or inhibitor concentration, only clean, clear water with values in accordance withthose in the following table must be used.

Parameter Minimum Maximum

Sum of alkaline earth metals *)

(Water hardness)0 mmol/l (0°d)

2.7 mmol/l (15°d)

pH value at 20 °C 6.5 8.0Chloride ions – 100 mg/lSulfate ions – 100 mg/lAnions total – 200 mg/lBacteria, fungi, yeasts are not permitted!

*) Common designations for water hardness in various countries:

1 mmol/l = 5.6°d = 100 mg/kg CaCO³• 1°d = 17.9 mg/kg CaCO³, USA hardness• 1°d = 1.79° French hardness• 1°d = 1.25° English hardness

If the limit values for the water are exceeded, hardness or mineral content can be decreased by addingdemineralized water.


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3.2.3 Corrosion inhibitor for the diesel fuel system

Manufacturer Brand name Part No. Comments Suitability forpreservation of

fuel system

filled unfilledSRS SchmierstoffVertrieb GmbH

SRS Calibration Fluid X00057309 Test oil as per ISO 4113 x x

Shell V – Oil 1404 – Test oil as per ISO 4113 x x

– Diesel fuel B0 *) X00056047 without biodiesel x –

– SRS SchmierstoffVertrieb GmbH

Diesel fuel B0 *)

+9 - 13 % SRS Anti-korrol M PlusSAE 30

X00056047 X00058336X00058338

without biodiesel

x x

– Fuchs

Diesel fuel B0 *)

+9 - 13 % Titan Uni-versal HD

X00056047 X00058057X00013236

without biodiesel

x x

x Suitable for preservation– Unsuitable for preservation

*) see Information:

B0 is diesel fuel in accordance with DIN EN 590 without biodiesel. Diesel fuel according toDIN EN 590 (also referred to as B7) normally contains an additive of 7 % biodiesel and must notbe used for preservation.


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3.3 Corrosion inhibitors for external preservationWhen preserving the exterior shell, all non-painted parts must be treated with a corrosion inhibitor. Thisforms a waxy protective coating after the solvent has evaporated.

Manufacturer Brand name Part No. CommentsCastrol Ltd. Rustilo 181 – waxy protective coating

Valvoline Oel Tectyl 846‑K‑19 X00057275X00057276

waxy protective coatingalso approved for generator ex-ternal parts

Represervation requirement• Every 3 years under normal storage conditions or with use of climate-compatible packaging• Every 12 months under difficult storage conditions


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3.4 Preservatives for non-engine componentsManufacturer Brand name Part No. CommentsExxon Mobil Corporation Mobil Polyrex EM – for generator bearings, if re-

quired

Represervation requirement• Some generator types must be barred every 6 months (→ Page 22). On this occasion, the lubrication

of the bearings should be checked and topped up, if necessary.


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4 Represervation Intervals

4.1 Dependency between storage conditions and type ofpackagingPreserved engine-generator sets must be represerved to retain the corrosion protection. Only approvedpreservatives (→ Page 10) must be used for represervation. The represervation intervals depend on thestorage conditions and type of packaging.

Storage conditionsA distinction is made between the following storage conditions:

Storage condition Operating areasNormal • frost-free, closed and heated rooms, clean

• max. temperature fluctuations between 10 and 40 °C• monthly average relative air humidity ≤ 65 %

Difficult • dust or contamination• dew point undershot > 20 % of the month• monthly average relative air humidity > 65 %

Unsuitable • salt-laden air• outdoor storage• ocean transport, dispatch to polar and tropical regions

Types of packagingThe type of engine-generator set packaging depends on the storage and transport conditions.

Type of packaging Operating areasCommercially availablepackaging

• for storage under normal or difficult conditions with differences in rep-reservation intervals

Climate-compatible packag-ing

• for unsuitable storage and transport conditions to simulate storageconditions that are as normal as possible; climate-compatible packag-ing, however, does not protect against frost

• check the humidity indicator in the special packaging every 3 to4 months

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4.2 Interpretation examples

The change intervals are based on fresh media with current date of manufacturer. If media arealready old, the change interval is reduced by the aging period.

Example 1: Factory-new engine-generator set with unfilled media circuits incommercially available packagingA preserved engine-generator set with unfilled media circuits is to be stored for 24 months in a closed,frostproof warehouse. The engine-generator set is wrapped in commercially available packaging. Whatare the represervation requirements?

In this case, the table for engine-generator sets with unfilled media circuits is relevant (→ Page 21).

Unfilled media circuits → normal storage conditions → commercially available packaging:• The media circuits (oil, fuel, coolant) and the combustion chamber must be represerved every

12 months.• The preservation of the external shell (non-painted parts) must be replaced every 36 months.

Non-engine components must be represerved according to their requirements (→ Page 22).

Example 2: Engine-generator set with unfilled media circuits in climate-compatible packagingA preserved engine-generator set with unfilled media circuits is to be stored for 60 months in climate-compatible packaging. What are the represervation requirements?

In this case, the table for engine-generator sets with unfilled media circuits is relevant (→ Page 21).

Unfilled media circuits → unsuitable storage conditions → climate-compatible packaging:• The media circuits (oil, fuel, coolant) and the combustion chamber must be represerved every

36 months.• The preservation of the external shell (non-painted parts) must be replaced every 36 months.


Example 3: Engine-generator set with filled media circuits (not approved forclimate-compatible packaging)An engine-generator set with filled media circuits (approved preservatives without aging) is to be takenout of service for approximately 12 months and stored under difficult conditions. What are the represer-vation requirements?

In this case, the table for engine-generator sets with filled media circuits is relevant (→ Page 19).

Filled media circuits → difficult storage conditions → commercially available packaging:• Oil: No measures necessary because the filled preservative oil does not have to be replaced until af-

ter 36 months.• Coolant: No measures necessary because the filled coolant does not have to be replaced until after

24 or 36 month (depending on product).• Fuel: The filled diesel fuel must be replaced every 6 months.• The combustion chamber must be represerved every 6 months.• The preservation of the external shell (non-painted parts) must be replaced every 12 months.


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4.3 Represervation Intervals of Media Circuits

4.3.1 Intervals with filled media circuits

Climate-compatible packaging is not permissible with filled media circuits.Under unsuitable storage conditions, preservation with filled media circuits is not allowed.

Notes:• For definition of storage conditions and packaging types, see (→ Page 17).• For examples on how to determine represervation intervals, see (→ Page 18).

Storage conditions Represervation interval in months Notes

6 12 24 36Filled media circuits (oil, fuel, coolant)

Normal Oil circuit – commerciallyavailable

– – Impermissible:• Climate-com-

patible pack-aging with fil-led media cir-cuits

• Storage underunsuitablestorage condi-tions

Also see corrosioninhibitors:• for oil circuit:

(→ Page 11)and additionalspecifications(→ Page 20)

• for fuel sys-tem:(→ Page 14)

• for coolant cir-cuit:(→ Page 12)and additionalspecifications(→ Page 20)

Fuel system – commerciallyavailable

– –

Coolant cir-cuit

– – commerciallyavailable andpreservationwith inhibitorconcentrationP113

commerciallyavailable andpreservationwith coolant

Difficult Oil circuit – commerciallyavailable

– –

Fuel system commerciallyavailable

– – –

Coolant cir-cuit

– – commerciallyavailable andpreservationwith inhibitorconcentrationP113

commerciallyavailable andpreservationwith coolant

Combustion chamber

Normal – commerciallyavailable

– – Also see corrosioninhibitors:(→ Page 11)Difficult commercially

available– – –

External Preservation

Normal – – – commerciallyavailable

Also see corrosioninhibitors:(→ Page 15)Difficult – commercially

available– –


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Additional specifications on oil circuitWith complete filling with the following named media, represervation of the lube oil circuit takes placeat the following intervals:

Product Replacement CommentsSRS Anticorrol M Plus SAE 30 after 3 years Engine must only be operated with these oils if

they are listed for the corresponding series asapproved engine oil in the "Fluids and Lubri-cants Specifications for Diesel engine-genera-tor sets" (A001064/..).

SRS engine oil O-236 SAE 15-W40 after 3 years

Titan Universal HD 30 MTU after 3 years

Cepsa Rodaje Y Proteccion SAE 30 after 3 years

Shell Rimula R6 LM (SL1407)SAE 10W-40

after 3 years

Shell Running-In Oil 7294 SAE 30 after 3 years Engine must not be operated subsequentlywith these media. These are not engine oils.Mobilarma 524 after 3 years

Additional specifications for coolant circuitWith complete filling with the following named media, represervation of the coolant circuit takes placeat the following intervals:

Product Replacement CommentsGlysacorr P113 Antifreeze 2 years after date

of manufactureEngine must not be operated with this medium.This is not an engine coolant.

Corrosion inhibiting antifreeze ap-proved for the corresponding series

3 years after dateof manufacture

Engine can be operated with this medium if thecorresponding conditions have been met. Seenotes on the corrosion inhibitors for the cool-ant circuit (→ Page 12).


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4.3.2 Intervals with unfilled media circuits

Notes:• For definition of storage conditions and packaging types, see (→ Page 17).• For examples on how to determine represervation intervals, see (→ Page 18).

Storage conditions Represervation interval in months Notes

6 12 24 36Unfilled media circuits (oil, fuel, coolant)


– – Unsuitable storageconditions withoutclimate-compati-ble packaging areimpermissible.Also see corrosioninhibitors:• for oil circuit:

(→ Page 11)• for fuel sys-

tem:(→ Page 14)

• for coolant cir-cuit:(→ Page 12)

Difficult commerciallyavailable

– – –

Unsuitable – – – climate-com-patible

Combustion chamber


– – Unsuitable storageconditions withoutclimate-compati-ble packaging areimpermissible.Also see corrosioninhibitors:(→ Page 11)

Difficult commerciallyavailable

– – –


External preservation

Normal – – – commerciallyavailable

Unsuitable storageconditions withoutclimate-compati-ble packaging areimpermissible.Also see corrosioninhibitors:(→ Page 15)

Difficult – commerciallyavailable

– –



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4.4 Represervation intervals for non-engine componentsThe represervation intervals for non-engine components depends on manufacturer and type, and arevalid for storage under the recommended storage conditions.

GeneratorManufacturer/Type Applicable for engine-

generator sets of SeriesRepreservation interval Recommended storage

conditionsMarathon MagnaPlus 1600 6 R – • indoor in a clean, dry

area without rapidchanges in tempera-ture and humidity toprevent condensation

• keep coveredMarathon MagnaMax 1600 8/10/12 V

2000 12/16/18 V2000 New Design12/16/18 V4000 12/16 V

every 6 months • indoor in a clean, dryarea without rapidchanges in tempera-ture and humidity toprevent condensation

• in unheated or damparea, space heatersare required

• keep covered• unpainted flanges,

shafts, drive discsand fittings are treat-ed with corrosion in-hibitor

Marathon MagnaPower 4000 16/20 V every 6 months

Starter batteryManufacturer/Type Applicable for engine-

generator sets of SeriesRepreservation interval Recommended storage

conditionsExide 1600 6 R

1600 8 V2000 12/16/18 V4000 12/16/20 V

every 6 months • indoor in a clean, dryarea

• 5 °C to 25 °C• disconnected and

dismountedPanther 1600 10/12 V every 6 months • indoor in a clean, dry

area• 5 °C to 25 °C• disconnected and

dismountedVarta 2000 New Design

12/16/18 Vevery 12 months • indoor in a clean, dry

area• 5 °C to 25 °C• disconnected and

dismounted


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5 (Re)preservation with Engine-Generator SetOperation Option

5.1 Short service interruption of up to one month

Note: • The following description applies to installed engine-generator sets.• Under normal storage conditions, all fluids and lubricants remain in the engine-generator set. Preser-

vation measures are not necessary. Refer to Variant A.• The drainage of engine coolant and charge-air coolant (if applicable) will be necessary, if any of the

following conditions apply:– Freezing temperatures are expected and the engine is to remain out of service for an extended

period, but engine coolant has no antifreeze additive.– The engine-generator set room is not heated.– The coolant is not maintained at a suitable temperature.– The antifreeze concentration is insufficient for the engine-generator set room temperature.– Antifreeze concentration is 50 % and engine-generator set room temperature is below -40 °C

(-40 °F).Refer to Variant B.

Variant A: Storage with filled media circuits under normal conditions1. Execute "Lockout/tagout procedure" (refer to the "Operation and Maintenance Manual").2. Seal air and exhaust sides, if out-of-service time remains for more than one week.

Variant B: Storage with unfilled media circuits under difficult conditionsu Follow the instructions for a storage of 1 to 3 months with unfilled media circuits (→ Page 25).

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5.2 Service Interruption of 1 to 3 Months

5.2.1 Storage for 1 to 3 months with filled media circuits

Note: • All fluids and lubricants remain in the engine-generator set.• If aqueous corrosion inhibitors are used in the coolant circuit and there is a risk of frost during stor-

age, a switch must be made to corrosion inhibiting antifreeze.• To protect the coolant cooler during the out-of-service time, the coolant level must exceed the filler

neck base of the coolant cooler.• Before putting the engine-generator set back into operation, ensure that a switch has been made to

a coolant approved for operating, if necessary. The coolant additives approved for operating areshown in the "Fluids and Lubricants Specifications for Diesel engine-generator sets" (A001064/..).

Preparatory steps to do in case of represervation1. Remove all covers.2. Connect starter batteries.3. Put control panel into operation.

Run engine1. Clean engine-generator set, if necessary.2. Run engine until operating temperature is reached.3. Run engine for approximately 30 second up to rated speed and shut down when rated speed is

reached. The engine must not be started again.

Lockout engine-generator set and seal openings1. Execute "Lockout/tagout procedure" (refer to the "Operation and Maintenance Manual").2. Seal all openings tight against moisture, such as air and exhaust sides and electrical plug connectors.

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5.2.2 Storage for 1 to 3 months with unfilled media circuits


Internal preservation and drainage1. Clean engine-generator set, if necessary.2. Drain coolant (if present).3. Completely fill coolant circuit with approved corrosion inhibitor concentration (→ Page 12).

Note: To bypass the flushing procedure during coolant filling for initial operation, the use of inhibitor concen-tration "Glysacorr P113" instead of the emulsifiable corrosion inhibitor oil "Oil 9156" is recommended.

4. Fill fuel system completely with an approved corrosion inhibitor for internal preservation of the fuel sys-tem which is suitable for unfilled engine (→ Page 14).

5. If necessary, replace engine oil with an approved initial operation corrosion inhibitor for internal preser-vation of the oil circuit and which is suitable for an unfilled engine (→ Page 11).

6. Run engine at increased idling speed for approximately 10 minutes. The inhibitor concentration mustreach operating temperature.

7. Shut down engine.8. Drain engine oil.9. Allow engine to cool down to maximum 40 °C.

10. Drain inhibitor concentration.11. The media circuits must be sealed immediately after draining the media.



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5.3 Service Interruption of more than 3 Months

5.3.1 Storage for more than 3 months with filled media circuits

Note: All fluids and lubricants remain in the engine-generator set.


Internal preservation1. Clean engine-generator set, if necessary.2. Leave engine oil in engine if it is an oil approved for preservation (→ Page 11). Otherwise replace filled

engine oil with an approved oil, or carry out initial filling with this oil.3. Fill fuel system with an approved fuel (→ Page 14). If a fuel is already filled and is unsuitable for engine

storage, it must be replaced.4. Drain coolant if necessary and fill with approved corrosion inhibitor (→ Page 12) or leave existing ap-

proved corrosion inhibitor in coolant circuit. The corrosion inhibitor should be filled or added to a levelwhich exceeds the filler neck base of the coolant cooler.

5. Run engine at increased idling speed for approx. 10 minutes. The coolant must have reached operatingtemperature.

6. Shut down engine.7. If necessary, completely fill all media circuits. To protect the cooler during the out-of-service time, add

coolant until the coolant level exceeds the filler neck base of the coolant cooler.

Preservation of combustion chamber1. Seal the decompression openings.2. Fill corrosion inhibitor oil for initial operation at least up to the Min mark.3. Remove end cover for combustion air intake and exhaust gas discharge.4. Provide access to the charge-air manifold. This can be done by removing flame-start canisters, sensors,

covers or pipes. Access to the charge-air manifold must always be established downstream of the inter-cooler, pressure fine filter / air filter and exhaust turbocharger.

5. Bar warm engine with starting equipment. The engine must not start. To do this:• actuate the stop lever for mechanical governors.• with electronic governors, the power supply must be disconnected and the engine barred via emer-

gency start or another suitable manner.6. While the engine is being barred, use a fine-atomizing spray gun to spray initial operation corrosion in-

hibiting oil into the charge-air pipe openings (→ Page 11) for about 15 seconds.7. Seal off the combustion air intake and exhaust outlet openings immediately against moisture and hu-

midity.8. Seal access to the charge-air pipes.

Preservation of non-painted parts (external preservation)1. Coat or spray non-painted parts of the outer shell with corrosion inhibitor for external preservation

(→ Page 15).2. Treat generator unpainted flanges, shafts, drive discs and fittings with corrosion inhibitor.

Preservation for non-engine components (generator and starter batteries)1. Keep generator bearings lubricated. According to the represervation interval (→ Page 22), bar the en-

gine manually, to rotate the shaft several turns for distributing the grease in the bearings.2. For charge conservation, load starter batteries according to the represervation interval (→ Page 22).


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5.3.2 Storage for more than 3 months with unfilled media circuits


Internal preservation and drainage1. Clean engine-generator set, if necessary.2. Drain coolant (if present).3. Completely fill coolant circuit with approved inhibitor concentration (→ Page 12).

Note: To bypass the flushing procedure during coolant filling for initial operation, the use of inhibitor concen-tration "Glysacorr P113" instead of the emulsifiable corrosion inhibitor oil "Oil 9156" is recommended.

4. Fill fuel system completely with an approved corrosion inhibitor for internal preservation of the fuel sys-tem which is suitable for unfilled engine (→ Page 14).

5. If necessary, replace engine oil with an approved initial operation corrosion inhibitor for internal preser-vation of the oil circuit and which is suitable for an unfilled engine (→ Page 11).

6. Run engine at increased idling speed for approximately 10 minutes. The inhibitor concentration mustreach operating temperature.

7. Shut down engine.8. Drain engine oil.9. Allow engine to cool down to maximum 40 °C.

10. Drain inhibitor concentration.11. Seal the media circuits immediately after draining the media.

Preservation of combustion chamber1. Seal the decompression openings.2. Fill corrosion inhibitor oil for initial operation at least up to the Min mark.3. Remove end cover for combustion air intake and exhaust gas discharge.4. Provide access to the charge-air manifold. This can be done by removing flame-start canisters, sensors,

covers or pipes. Access to the charge-air manifold must always be established downstream of the inter-cooler, pressure fine filter / air filter and exhaust turbocharger.

5. Bar warm engine with starting equipment. The engine must not start. To do this:• Actuate the stop lever for mechanical governors.• With electronic governors, the power supply must be disconnected and the engine barred via emer-

gency start or another suitable manner.6. While the engine is being barred, use a fine-atomizing spray gun to spray initial operation corrosion in-

hibiting oil into the charge-air pipe openings (→ Page 11) for about 15 seconds.7. Seal off the combustion air intake and exhaust outlet openings immediately against moisture and hu-

midity.8. Seal access to the charge-air pipes.






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Lockout engine-generator set and seal openings1. Execute "Lockout/tagout procedure" (refer to the "Operation and Maintenance Manual").2. Seal all openings tight against moisture, such as air and exhaust sides, and electrical plug connectors.


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6 (Re)preservation without Engine-Generator SetOperation Option

6.1 Storage with filled media circuits

Note: • Represervation on the test bench is recommended.• The described procedure is a guideline, which has to be adapted to the specific engine-generator set

in each case. Work sequence details may vary from engine-generator set to engine-generator set.Contact MTU Service, if you have any questions.

• Where possible, the individual preservation measures should be carried out at the same time.

Preparatory steps1. Check of local specifications.

Prior to the storage with filled media circuits, clarify whether this is permissible with regard tohazardous goods and environmental protection regulations.

2. Clean engine-generator set components, if necessary.

3. Prime the engine.

Only bar the engine after it has been primed. Therefore, first prime the engine and then buildup oil pressure, then preserve the cooling and fuel circuit as well as the combustion chamber.

Preservation of the lube oil circuit1. Drain old oil if necessary.2. Remove priming connection from crankcase.

Note: The pressure pump (oil priming pump) is used to pump a corrosion inhibitor approved for internal pres-ervation of the oil circuit, and suitable for filled engine (→ Page 11) into the oil circuit.

3. Connect oil priming pump.4. Remove the turbocharger oil return line, which is the last element in the oil circuit to be supplied with

oil.5. Pump oil under pressure into the circuit until it emerges from the turbocharger oil return line.6. Reinstall turbocharger oil return line. This ensures that the entire lube oil circuit is completely filled.7. Bar engine manually one to two rotations.8. Leave the oil in the engine.

Due to aging, the oil must be replaced in accordance with the specified represervation intervals(→ Page 19).

Preservation of the coolant circuit1. Drain old coolant if necessary.2. Completely fill the coolant circuit with an approved medium suitable for filled engine (→ Page 12) and

then seal hermetically.3. Open all thermostats so that the medium reaches all areas of the coolant circuit.4. Leave the medium in the engine.

Due to aging, the medium must be replaced in accordance with the specified represervationintervals (→ Page 19).Mixing of different media is impermissible.

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Preservation of combustion chamber1. Seal the decompression openings.2. Open air pipe downstream of intercooler.3. When oil pressure has built up, use a fine-atomizing spray gun to spray approved corrosion inhibitor for

internal preservation of the oil circuit (→ Page 11) approximately 15 seconds into the openings of the airpipes.

4. Use the starting system to bar the engine. The engine must not start.5. Carefully seal air inlet and exhaust outlet. This prevents venting via the opened inlet and exhaust valves

at the cylinders in overlap position.

Preservation of the fuel system1. Fill fuel system completely with an approved corrosion inhibitor for internal preservation which is suita-

ble for filled engine storage (→ Page 14).

Note: The preservative must reach all areas of the fuel system.2. If necessary, bar the engine to distribute the preservative in the fuel system. The engine must not start.





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6.2 Storage with unfilled media circuits

Note: • Represervation on the test bench is recommended.• The described procedure is a guideline, which has to be adapted to the specific engine-generator set

in each case. Work sequence details may vary from engine-generator set to engine-generator set.Contact MTU Service, if you have any questions.

• Where possible, the individual preservation measures should be carried out at the same time.

Preparatory steps1. Clean engine-generator set components, if necessary.

2. Prime the engine.

Only bar the engine after it has been primed. Therefore, first prime the engine and then buildup oil pressure, then preserve the cooling and fuel circuit as well as the combustion chamber.

Note: Seal off all media circuits against moisture / humidity immediately after draining the preservative.

Preservation of the lube oil circuit1. Remove priming connection from crankcase.2. Connect oil priming pump.3. This pressure pump is used to pump a corrosion inhibitor approved for internal preservation of the oil

circuit, and suitable for filled engine, (→ Page 11) into the oil circuit.4. Remove the turbocharger oil return line, which is the last element in the oil circuit to be supplied with

oil.5. Pump oil under pressure into the circuit until it emerges from the turbocharger oil return line.6. Reinstall turbocharger oil return line. This ensures that the entire lube oil circuit is completely filled.7. Bar engine manually one to two rotations.8. Leave the oil in the engine for 24 hours.9. Then drain the oil completely.

Preservation of the coolant circuit1. The coolant circuit is filled completely with an approved inhibitor concentration (→ Page 12) and then

sealed hermetically.2. Open all thermostats so that the medium reaches all areas of the coolant circuit.3. If no circulation is possible in the engine (e. g. via a heated pressure testing trolley):

a) Leave the inhibitor concentration for 24 hours in the engine.b) Then completely drain the inhibitor concentration (drain temperature < 40 °C).

4. Seal the coolant circuit hermetically against moisture.

Preservation of combustion chamber1. Seal the decompression openings.2. Open air pipe downstream of intercooler.3. When oil pressure has built up, use a fine-atomizing spray gun to spray approved corrosion inhibitor for

internal preservation of the oil circuit (→ Page 11) approximately 15 seconds into the openings of the airpipes. Use the starting system to bar the engine. The engine must not start.

4. Carefully seal air inlet and exhaust outlet. This prevents venting via the opened inlet and exhaust valvesat the cylinders in overlap position.

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Preservation of the fuel system1. Fill fuel system completely with an approved corrosion inhibitor for internal preservation which is suita-

ble for unfilled engine storage (→ Page 14).

Note: The preservative must reach all areas of the fuel system.2. If necessary, bar the engine to distribute the preservative in the fuel system. The engine must not start.3. Leave the fuel for 24 hours in the engine.4. Drain the fuel completely.





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7 Depreservation

7.1 Depreservation prior to operation

Depreservation is not required on an installed engine-generator set with out-of-service periodup to 3 months. In this case:• Remove all covers.• If "Lockout/tagout procedure" was performed at preservation, execute "Unlocking pro-

cedure" (refer to the "Operation and Maintenance Manual").

Note: Before putting the engine-generator set into operation:• Remove the preservation agent.• Ensure that a switch has been made to a coolant approved for operating, if necessary. The engine-

generator set must not be operated with antifreeze if only aqueous coolant additives are approved.• Carry out an oil change involving changeover to an oil approved for operating.The coolant additives and the oils approved for operating are shown in the "Fluids and Lubricants Speci-fications for Diesel engine-generator sets" (A001064/..).

Depreservation1. Clean engine-generator set, if necessary.2. Remove all covers.3. Drain corrosion inhibitor oil, if necessary.

Note: The next step is not required for new deliveries; necessary after 1 year at the latest.4. Replace oil filter (elements).

Note: The next step is not required for new deliveries; necessary after 1 year at the latest.5. Replace fuel filter (elements).6. Fill with engine oil.7. Ensure that all bearings, which are supplied by the engine oil circuit, are well lubricated.8. Bar engine manually.9. Drain inhibitor concentration if necessary.

10. Fill with or renew engine coolant.11. For engine-generator sets with TB engine: Fill with or renew charge-air coolant.

Final steps1. After a long-term storage (one year or longer), prepare the generator:

Generator type ActionMagnaPlus generator: • Test, clean and dry the generator.

• In areas where the generator has been subject to vibration, inspectbearing(s) and replace, if necessary.

MagnaMax/MagnaPowergenerator:

• Add grease to the bearings. Refer to the "Operation and MaintenanceManual" for amount of grease and task description.

• In areas where the generator has been exposed to damp, humid condi-tions, check the insulation resistance and dry windings, if necessary.

2. Mount and connect starter batteries.3. Execute procedure "Putting the engine-generator set into operation" (refer to the "Operation and Main-

tenance Manual").

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7.2 Instruction sheet for depreservation if climate-compatiblepackaging is used

Before opening the packaging, please read this instruction sheet and follow the instructionswithout fail, in particular the notes on when it is necessary to notify MTU Onsite Energy.

Instruction sheet for depreservation if climate-compatible packaging is used1. Read off the humidity values on the humidity indicator (→ Page 37) and enter them on the Monitor-

ing Sheet (→ Page 46).Evaluation:

a If all three fields on the humidity indicator show blue, everything is OK.b If fields 30 and 40 have turned partly or completely pink, examine the packaging for

damage. If the packaging is damaged, notify MTU Service.c If all three fields are pink, do not open the packaging material and report to MTU Serv-

ice.2. If the humidity values are OK and if there are no other visible defects, remove the laminated alumi-

num foil from engine and components.

3. Check engine and components externally when foil has been removed.Enter date and findings of check in Monitoring Sheet.

4. Visually check all rubber hose connections.The connections must not be brittle or swollen.

5. In the event of objections, contact MTU Service without delay and wait for further messages.In the meantime, do not prepare or modify the engine-generator set for installation, but store it sothat it is dry and covered.

6. Enter the date of depreservation on the Monitoring Sheet.

7. Do not remove the seals of the openings until just prior to use.

8. For initial operation, please observe the engine-generator set documentation.

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8 Packaging

8.1 Types of packaging

This chapter describes the engine packaging.

The type of engine packaging depends on the storage and transport conditions.

A distinction is made between the following types of packaging:• Commercially available packaging → goods are intended for immediate use• Climate-compatible packaging → for protection of goods susceptible to corrosion during ocean trans-

port, shipping to polar and tropical regions and for unsuitable storage conditionsNote: "Climate-compatible packaging" corresponds to the "special packaging" in earlier editions ofthe "Fluids and Lubricants Specifications for Diesel engine-generator sets" (A001064/..). The termhas been adapted to the packaging manual.

In the case of long-term storage of engines, for example, for 3, 5 or 10 years in climate packaging, regu-lar re-preservation in accordance with the specified intervals (→ Page 19) and (→ Page 21) is neverthe-less necessary.

Engines and drive units require special packaging for transportation at sea, in polar or tropical regionsand for long-term storage. The preserved engine must be additionally protected with climate-compatiblepackaging. With climate-compatible packaging, where possible all media must be completely drainedout of the respective medium circuit (fuel, oil, coolant). The climate-compatible packaging must be ap-plied directly after preservation. Ensure that any engine painting has hardened beforehand.Climate-compatible packaging:

• can reduce the effects of unsuitable storage conditions, although it does not provide frost protection• is absolutely necessary for sea transport and transport in tropical and polar regions due to the threat

of exterior shell corrosion

Notes:• Incorrect storage will render the warranty invalid.• The humidity indicator of climate-compatible packaging must be checked every 3 to 4 months. The

result must be documented in accordance with (→ Page 46) and measures initiated if necessary.• Existing special agreements still retain their validity.• The following descriptions refer to the use of climate-compatible packaging for the storage of pre-

served engines.

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8.2 Climate-compatible packaging – DesignThe following packing aids are used for the climate-compatible packaging:

A – Outer layers of bonded-layer material (e.g. laminated aluminum foil)B – Water-absorbing desiccant (e.g. silica gel)C – Humidity indicator

The packaged products are shrink-wrapped in composite foil and the enclosed air is extracted. Whendesiccants packs are placed in the packaging, the residual moisture is reduced to a desired relative airhumidity. The climate packaging prevents condensation on the metal surface and thus any resultingcorrosion damage.

A – Outer layers of bonded-layer materialThe outer layers consist of tightly-bonded layers of aluminum composite foil which has limited permea-bility to water vapor and gas.

The laminated aluminum foil used at MTU consists of polyethylene and aluminum with the followingproperties:• Temperature range for the application +70 °C to −55° C• Water vapor permeability: 0.1 g/m² per day at 38 °C and 80% relative humidity

(in comparison, PVC flexible foil WVP: 6 g/m² per day)

For composite foils used at MTU, refer to the list of consumables (→ Page 40).

B – DesiccantDesiccant, normally silica gel, is the common term for an agent that absorbs water and is used in cli-mate packaging. The desiccant is in packs of highly-permeable (for water vapor) and strong material(e.g. natron crepe paper) which are placed in the transport package.

Example of a desiccant pack

For desiccant packs used at MTU, refer to the list of consumables (→ Page 40).

Calculation of the required desiccant units.

The amount of desiccant units to be used in packaging for shipping depends on the climatic conditionsand on storage at the destination.

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The minimum quantity of desiccant units to be used is to be calculated as follows:

Climatic zone Desiccant units (DU)per area of compositefoil in m² (A)

+DUs per kg packag-ing aid (PA) =

Desiccant units(DU)

AEurope (apart from Russia) 6 x A + 17 x PA = DUs per shipping

package

BUSACanadaMediterranean regionNear East

8 x A + 20 x PA = DUs per shippingpackage

CRussiaSouth and Central AmericaMiddle East and Far East

17 x A + 20 x PA = DUs per shippingpackage

Table 1: Calculation of desiccant unitsProcedure:

1. Measure surface A of the laminated aluminum foil for the packaging.2. Weigh the packing aids (PAs), such as wood, corrugated cardboard etc., required to support and

pad the engine within the laminated aluminum foil.3. Determine in and through which climatic zones the engine is to be sent and stored in the packag-

ing.4. Calculate the required desiccant units (DUs).

Note: If the laminated aluminum foil is damaged after replacing it or touching it up, perform the follow-ing calculation of the DUs again.

Calculation example for desiccant units:

• Packaging for climatic zone C• Area of composite foil: 10 m²• Weight of packing aids: 3 kg

Calculation: 17 DU x 10 + 20 DU x 3 = DUs per shippingpackage

170 DUs + 60 DUs = 230 DUs

Result: 230 desiccant units (DUs) are required for adequate protection of the engine.

C – Humidity indicatorTo monitor the degree of saturation of the desiccant, a humidity indicator is attached to the aluminumfoil packaging.

Humidity indicators show when the specified relative air humidity is exceeded by changing color. Theincrease in relative air humidity, e.g. if the packaging is not airtight or the laminated aluminum foil isdamaged, poses a risk of corrosion to the engine.

A vision panel with humidity indicator is screwed into the laminated aluminum foil, which must be as faraway from the desiccant as possible. The vision panel allows the relative air humidity within the laminat-ed aluminum foil or any changes to be checked at all times.

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Example of a humidity indicator

Note: The air humidity inside the packaging must be checked regularly every 3 to 4 months(→ Page 46). Measures to be carried out in case of changes to the relative air humidity are listed in thefollowing table.

Reading the humidity indicator

Area Discoloration as an indicator of the rela-tive air humidity

Measures to be initiated

30 Pink discoloration: Relative humidity above30%

• Shorten checking period• Check humidity indicator every 4 weeks


• Replace desiccant, ensure the amount is cor-rect; calculation: (→ Page 37)

• Distribute new desiccant evenly in the packag-ing area

• Extract air from the packaging and reseal com-posite foil (→ Page 45)


• Check packaged products• Re-preserve the engine• Replace desiccant, ensure the amount is cor-

rect; calculation: (→ Page 37)• Distribute new desiccant evenly in the packag-

ing area• Extract air from the packaging and reseal com-

posite foil (→ Page 45)

Note: The humidity indicator regenerates itself automatically. Replacement following opening and seal-ing of the packaging area is not required.

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8.3 Climate-compatible packaging – Installation

Preconditions☑ If the engine is not new or not thoroughly overhauled by MTU (both are already preserved), preserva-

tion in accordance with this publication is required before the climate packaging can be used.

☑All engine fluids and lubricants must be drain as completely as possible.

☑Check whether a transport locking device is prescribed for the engine. If so, lock crankshaft and en-gine mount according to the engine documentation.

Special tools, Material, Spare parts

Designation / Use Part No. Qty.

Manual foil-welding device (commercially available)Hard rubber platesLoctite 5970 sealant, permanently elastic 50773Laminated aluminium foil, 1.00 m wide 49576Laminated aluminium foil, 1.25 m wide 49577Laminated aluminium foil, 1.50 m wide 49579PE foam foil, 1.25 m wide, 4 mm thick 49578Vision panel 20448Vision panel with humidity indicator 20447Desiccant, 125 g = 4 units 49542Desiccant, 250 g = 8 units 49543Desiccant, 500 g = 16 units 49544Desiccant, 1000 g = 32 units 49545

Manual foil-welding deviceu Various manual foil-welding device models

are available on the market. One supplier,for example:• W. Kopp Verpackungsmaschinen

Stettener Str. 111–11773732 Esslingen – WaeldenbronnGermany

Model: Manual sealing device HSD 95 Cello

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Packing the engine1. Use a hollow punch to knock out a passage

for the anchor bolts.2. Place hard rubber plates on the transport

trestle in the area of the anchor bolts.

3. In the area of the bolt entry, thoroughlycoat the hard rubber plates with perma-nently elastic sealant.

4. Use a hollow punch to knock out a passagefor the anchor bolts.

5. Place laminated aluminium foil in positionand, in the area of the bolt entry, thorough-ly coat with permanently elastic sealant.

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6. Place the hard rubber plates once again onthe laminated aluminium foil in the area ofthe bolt entry.

7. Place foam foil on the hard rubber plates toprovide additional protection for the lami-nated aluminium foil.

8. Mount engine on transport trestle and bolton engine mounting.

Result: The complete system is firmly press-fittedand compact.

Padding the edges and cornersof the engine block

u Cushion edges and corners of the engineblock that could damage the laminated alu-minium foil with foam foil.

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Applying the desiccantNote: The desiccant units must not come into di-

rect contact with corrosive engine compo-nents.

1. Insert the calculated number of desiccantunits. Calculation example: (→ Page 37).

2. The desiccant units must be fastened inthe upper third of the sealed cover and at-tached to the engine block, freely suspend-ed if possible.

3. Use suitable fastening materials for thedesiccant units (e.g. string or adhesivetape) to prevent damage to the desiccantunits, the engine or the laminated alumini-um foil.

Installation of humidity indica-tor and vision panel

1. The holes for the humidity indicator andthe vision panel are to be cut into the lami-nated aluminum foil at a point that is clear-ly visible and as far away from the desic-cant units as possible.

2. The vision panel is to be fastened in such away that the engine number can bechecked.

3. Screw the humidity indicator and visionpanel into the laminated aluminium foil.

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Sealing the laminated aluminumfoil

1. Seal the laminated aluminium foil using themanual foil-welding device (→ Page 40).

2. Prior to final sealing of the laminated alumi-nium foil, use a vacuum pump (e.g. vacuumcleaner) to extract the entrapped air in thepackaging. Avoid excessively tight fitting ofthe laminated aluminium foil becausestress during transportation can result inchafing of the laminated aluminium foil.

Result: • The vacuum created results in the lami-nated aluminium foil to lie lightly againstthe engine.

• Extracting the air removes the humidityin the air, thus reducing the humiditywithin the packaging.

Leak-tightness checkNote: If the packaging is not sufficiently tight, it

will lose its tension within 30 minutes andexpand.

u If the packaging is not airtight, the leak canbe detected by blowing air into the packag-ing and resealing the packaging.

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8.4 Climate-compatible packaging – Check and repair

Special tools, Material, Spare parts

Designation / Use Part No. Qty.

Manual foil-welding device (commercially available)Laminated aluminium foil, 1.00 m wide 49576Laminated aluminium foil, 1.25 m wide 49577Laminated aluminium foil, 1.50 m wide 49579Desiccant, 125 g = 4 units 49542Desiccant, 250 g = 8 units 49543Desiccant, 500 g = 16 units 49544Desiccant, 1000 g = 32 units 49545

Note: When checking the climate packaging, the laminated aluminum foil must not be damaged. Open thetransport box (if available) with utmost care. The condition of the laminated aluminum foil must be in-spected thoroughly during customs, stock or storage checks. Corrosion protection is no longer guaran-teed if the laminated aluminum foil is damaged.

Checking the air humidity1. Check humidity level regularly every 3 to 4 months.2. Enter findings in Monitoring Sheet (→ Page 46). If the engine's warranty period is still valid, send the

Monitoring Sheet to MTU Friedrichshafen GmbH after commissioning.

Replacing desiccant1. Open the laminated aluminium foil at the upper area and remove the desiccant.2. Place the same amount of new desiccant in the upper area.3. Extract air and reseal laminated aluminium foil with manual foil-welding device (→ Page 40)until airtight.

Repair of climate-compatible packagingNote: If the laminated aluminium foil is damaged, the damaged section can be cut out and replaced by a re-

pair piece. Incorrect repair work, e.g. using adhesive tape, is not permitted since it would not maintainthe vacuum in the packaging.

1. Cut out damaged laminated aluminum foil section.2. Seal new laminated aluminum foil section with manual foil-welding device.3. Place new desiccant in packaging.4. Prior to final sealing of the laminated aluminium foil, use a vacuum pump (e.g. vacuum cleaner) to ex-

tract the entrapped air in the packaging.5. Reseal laminated aluminium foil with manual foil-welding device.

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8.5 Monitoring Sheet for engines with climate-compatiblepackagingThe following checks are to be made before, during and at the end of the engine storage period andcorrect execution must be confirmed by date and signature.

Note: For new products, the delivery date must always be entered.

Engine model: Engine No.: Delivery date:

Date of scheduled initial operation of engine:

No. Task Date Name1 Visual inspection of special packaging for damage

Relative air humidity: _______ %

2 Relative air humidity: _______ %











13 Inspection of the hygrometer before opening the packagingRelative air humidity: _______ %

14 De-preservation completed

No. Possible necessary correction work(e.g. on the aluminum foil or transport box)

Date ofDesign

Name ofperson responsible

1

2

3

4

5

Important note on the warranty period

Notify MTU Friedrichshafen GmbH:• if two or all three fields of the humidity indicator are pink• if, during de-preservation of the engine, external signs of corrosion or damage to the

rubber hose connections are detected• in due time before initial operation of the engine

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9 Overview of Changes

9.1 Overview of change to previous edition

Changes to previous editionNONE, first issue.

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10 Index

10.1 IndexC

Check sheet for (re)preservation 8Climate-compatible packaging 36– Check and repair 45– Design 37– Installation 40– Instruction sheet for depreservation 35– Monitoring Sheet 46Combustion chamber – Corrosion inhibitor 11– Represervation intervals 19, 21Coolant circuit – Corrosion inhibitor 12– Represervation intervals 19, 21Corrosion inhibitor – External preservation 15– Generator 16– Internal preservation 11, 12, 14

D

Depreservation – Instruction sheet 35– Prior to operation 34Desiccant 37Disposal 6Documentation requirements 7

E

Engine packaging 36Engine-generator set filled – Depreservation 34– Out-of-service period < 1 month 23– Out-of-service period > 3 months 26– Out-of-service period 1 to 3 months 24– (Re)preservation without operation option 30Engine-generator set unfilled – Depreservation 34– Out-of-service period < 1 month 23– Out-of-service period > 3 months 28– Out-of-service period 1 to 3 months 25– (Re)preservation without operation option 32External preservation – Corrosion inhibitor 15– Represervation intervals 19, 21

F

Fuel system – Corrosion inhibitor 14– Represervation intervals 19, 21

G

Generator – Corrosion inhibitor 16– Represervation intervals 22

H

Humidity indicator 37

I

Inhibitor concentration 12Initial operation corrosion inhibitor 11Initial preservation 7Instruction sheet for depreservation 35Internal preservation – Corrosion inhibitor 11, 12, 14– Represervation intervals 19, 21

M

Monitoring Sheet for climate-compatible packaging 46

N

Non-engine components – Corrosion inhibitor 16– Represervation intervals 22– Storage conditions 22Notes on use of the preservation specifications 4

O

Oil circuit – Corrosion inhibitor 11– Represervation intervals 19, 21

P

Packaging 36Preservation, see (Re)preservation 7Preservatives 7– Approval 10– Safety instructions 6– Test standards 10

R

(Re)preservation – Check sheet 8– Definition 7– Initial preservation 7

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Represervation intervals 17– Combustion chamber 19, 21– External preservation 19, 21– Filled media circuits 19– Generator 22– Interpretation examples 18– Starter battery 22– Unfilled media circuits 21(Re)preservation with operation option – Engine-generator set filled 23, 24, 26– Engine-generator set unfilled 23, 25, 28(Re)preservation without operation option – Engine-generator set filled 30– Engine-generator set unfilled 32Revision overview 47

S

Safety instructions 6Short service interruption 23Special packaging, see Climate-compatible packaging 36Starter battery – Represervation intervals 22Storage conditions 17, 22

T

Types of packaging 17, 36

V

Validity of the preservation specifications 4

W

Warranty 4

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Documents

MTU ValueService Technical Documentation Technical Documentation Diesel engine-generator sets with MTU Series 1600, 2000 and 4000 engines Preservation and Represervation Specifica