TheEnglishtranslationisbelievedtobeaccurateIncaseofdiscrepanciestheGermanversionshallgovern.

NumericalnotationaccordingtoISOpractice(seeVW01000).

FormFE41-09.06

NormvorAnwendungaufAktualit‰tpr?fen/Checkstandardforcurrentissuepriortousage.

Klass.Nr./Class.No.8LK00December2006

AutomaticTransmission,Manual

TransmissionwithSpecialRequirements

TestingforResidualForeignMatterandInteriorCleanliness

PV

3370

Konzernnorm

Descriptors:transmission,residualforeignmatter,interior,cleanliness,manual

transmission,automatictransmission

Preface

TestSpecificationPV3370isarevisionofPV3345foruseforresidualforeignmatterspecificationandalsofordrawingnotesformanualtransmissioncomponentswithspecialrequirementsandforthestandardizationofdifferentiatedrequirements.

1Scope

Thisstandardisintendedforinternaluse.Externally,itmaybemadeaccessibleonlytoreleasedsuppliersand/orthoseintendedtobereleased.

Thisstandardisdesignedtodeterminetheresidualforeignmatterstatusintransmissioncomponents,withthepurposeofenhancingorensuringtheinteriorcleanlinessoftransmissions,inparticularautomatictransmissions;itisapplicabletosupplypartsandin-housemanufacturedparts.

2Requirements

Accordingtodrawing.

ThePerformanceSpecifications"Transmission,ResidualForeignMatterModule"shallapply,eitheradditionallyorasanalternative.Itrelates,interalia,tostatementsontheabsenceofweldspatterandabrasivesthataretobeobserved.

3Test

3.1Briefdescription

Theexaminationisperformedoncompletedsingleparts/assembliesthathaveundergonefinalcleaningandhavebeenreleasedformountingorinstallation.

Therequirednumberofspecimenpartsaretakenoutofthepackagingandcleanedunderlaboratoryconditions;theresiduesarefilteredandareevaluatedwithregardtoparticlesize,massandtype.

3.2Detailedandsystemdescription

Theresidualforeignmatterrequirementforeachsinglepartoreachassemblyisdescribedbyanidentifier(upper-caseletter/number/lower-caselettercombination).Thisnumericalvaluealsogivestheminimumquantitytobetested.

Theupper-caseletterdefinesthemaximumpermissibleparticlesizeandparticlenumber,thefollowingcodenumberdefinesthemassoftheresidualforeignmatterandthenecessaryspecimenquantity(takingintoconsiderationtheavailableweighingequipment).

Thelower-caseletterprovidesinstructionsondetailcriteriasuchasposition,degreeofdismantlingandspecialfeatures(Tables1to3).

Page1of6

Fachverantwortung/Responsibility

4PKQ-2H.Adami

Tel.+49-561490-3459

Normung/Standards(E2TC,1733)

E2TC/4Tiefenbach

Tel.:+49-5361-9-75357Terlinden

Vertraulich.Allrightsreserved.NopartofthisdocumentmaybetransmittedorreproducedwithoutpriorpermissionofaStandardsDepartmentoftheVolkswagenGroup.

PartiestoacontractcanonlyobtainthisstandardviatheB2Bsupplierplatformì

?.

?

VOLKSWAGENAG

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PV3370:2006-12

Table1

Codeletter

Requirement

A

Particlesize<300μm

B

None

C

Particlesize<600μm

D

Particlesize<900μm

E

Particlesize<1200μm

F

Particlesize<300μm,butoneparticleperpart<600μmpermissible

G

Particlesize<600μm,butoneparticleperpart<900μmpermissible

H

Particlesize<900μm,butoneparticleperpart<1200μmpermissible

I

Particlesize<1200μm,butoneparticleperpart<1500μmpermissible

ForFtoI:DesignEngineeringhasthefreedomtoalsoestablishseveralparticlesofthenextsizeclass(e.g.F,butinsteadofone,threeparticlesarepermissible)orthecombinationofseveralsizeclasses(e.g.F,butinsteadofoneparticle<600μm,threeparticles

<900μmarepermissible)intheformofadrawingnoteordeviationpermit.

Table2

Codenumber

Requirement

0,005

<0,005mgperpart

0,01

<0,01mgperpart

0,03

<0,03mgperpart

0,05

<0,05mgperpart

0,1

<0,1mgperpart

0,3

<0,3mgperpart

0,5

<0,5mgperpart

1

<1mgperpart

3

<3mgperpart

5

<5mgperpart

Injustifiedcases,othercodenumberscanalsobeused(e.g.6,10or30).

section

Table3

Detailcriteria

Requirement

Abrasivesandlooseweldspatterarenotpermissibleonprinciple.

a

Position:external.

b

Disassemblyforeignmatterisnotconsideredtoberesidualforeignmatter.

c

Primarysteelparticlesnotpermissible;fluffandlightalloynottakenintoaccountinstandardquantitieswhenrestrictingparticlesize.

d

Primarylightalloyparticlesnotpermissible;fluffnottakenintoaccountinstandardquantitieswhenrestrictingparticlesize.

e

Metallicparticlesnotpermissible.

f

Primaryorganicparticlesnotpermissible.

g

Hardparticlesnotpermissible.

h

Magneticparticlesnotpermissible.

i

Position:internalhydrauliccircuit.

y

Tobetestedunderconditionsresemblingoperation,e.g.withpumpsrotatingundertheirownpowerorwithexternaldrive,orwithvalvebodiesundertestbench

conditionswithactivationofalloperatingstates.

z

Tobecheckedinassembly(undismantled).

See"Requirements".

Page3PV3370:2006-12

3.3Specimenquantity

Thenecessaryminimumquantitydependsonthepermissiblemassoftheresidualforeignmatterandtheweighingequipmentusedforevaluation.

Itisorientedtowardtherelevantcomponentorassembly,thesensitivityoftheareaofapplicationandtheapparatusavailablefordeterminingthemassoftheresidualforeignmatter.

Thespecimenquantityiscalculatedaccordingtotheformula:

Balanceresolutioninmgxfactor50

Specimenquantity=

Permissiblemassofresidualforeignmatterperpartinmg

Example:Withacodenumberof0,1fromTable2,theresultis50specimenpartswhenusingabalancewitharesolutionof0,1mg.Ifthereisonlyabalancewitharesolutionof1mgavailable,theresultis500specimenparts.

3.4Equipment,reagents

-Laboratoryultrasoniccleaningunit

-Diaphragmliquidpump

-Linefilteringunit

-Vacuumfilteringunit

-Analyticalbalance(resolution0,1mg)

-Stereomicroscopewithocularmicrometer(25xmagnification)

-Nylonfibrousfilter,diameter:47mmorlarger,cold-punched

-Safetycoldcleaningagent(e.g.Volkswagenmaterialnumber29.2829)

-Petroleumether

3.5Testprocedure

3.5.1Specimenparts

Supplypartsandin-housemanufacturedpartsinthetypeintendedforfinalassembly.Thepartsshallberemovedfromtheunopenedoriginalpackaging.TheminimumspecimenquantityiscalculatedaccordingtoSection3.3.

3.5.2Cleaning

Thepartsarecleanedinanorganichydrocarbon-basedsolvent.

SafetycoldcleaningagentsofflashpointhazardclassA3,freeofchlorinatedhydrocarbonsandaromatichydrocarbons,havebeentriedandtestedforthispurpose.

CleaningaccordingtoVDA19,using:

-Low-pressuresprayingwithwashbottle

-Medium-pressuresprayingbymeansofspraygunincleaningcabinet

-Ultrasoniccleaning,rinsinginsolvent

-Flushingfrombothsidesbymeansofdiaphragmpump(interiorflushing)

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PV3370:2006-12

Thetaskofthetestfluidistostriptheforeignmatterburdenonthecomponentsascompletelyaspossible.Therelevantprocessisaccordinglyselectedforthecomponentandisdeemedtobeappropriatewhenasecondtestofthesamepartshowsaresidualforeignmatterquantity<10%ofthefirsttest(fadingcurveinaccordancewithSection4.1ofVDA19).Thecleanlinessofthetestfluidhasadirectinfluenceontheblankvalueandincreasesthevalueifitiscontaminated.

Thecleanlinessofthefluidusedistobeensuredbymeansofappropriatefiltration.

Theblankvalueoftherelevanttestprocedureistobedeterminedwithoutthespecimenparts.

Ifablankvalueexceeds10%oftheresidualforeignmatterquantitypermittedortobeexpected,thetestingdevicesandtestingtoolsmustbecleanedagain.

Componentswithasurfaceeasilyaccessibleonallsides

Cleanspecimenpartsusingasufficientquantityofthecleaningagent,eitheroneaftertheotheroralltogether,dependingonthesizeoftheparts.

Whenspraying,thetotalfluidquantityistobedistributedevenlyoverthecomponents.

Duringultrasoniccleaning,thetimeistobelimitedto60seconds.Thepartsaretobeflushedusingawashbottlecontainingcleancleaningagentwhentheyareremoved.

Testvesselsmadeofglassorstainlesssteelaretobeused,nodampingmaterialssuchasplastic.Duringrinsing,approx.50strokesaretobeexecutedwithin60seconds.

Aconicalvesselfittingthespecimenisused,sothatthespecimenisapprox.6mmabovethebottominordertoensurethatthespecimencancomeintocontactwiththefluidonallsides.

Componentswithpartialresidualforeignmatterrequirements

Componentsforwhichonlypartialareasofthesurfaceoronlytheinterioraresubjecttoaresidualforeignmatterrequirementorforwhichdifferentinteriorsaresubjecttodifferentregulations(e.g.inthecaseofahousingwithdifferentrequirementsforthehypoidspaceandATFspaceandnorequirementfortheexterior)aresprayedwithsufficientquantitiesoffluidinthenon-regulatedareafirstinordertopreventfalsificationofthefollowingprocedure.Asarule,thefluidisdiscardedorsuppliedforgravimetricanalysis.Afterthat,thechamberorsurfacetobetestedissprayedorflushed.Thesurfacesnottobetestedarecovered.Ifthisisnotpossible,onlytherelevantzoneorchamberisflushed.

Hollowbodiessuchashoses,tubes,lines,radiators,etc.

Hollowbodies,forwhichgenerallyonlytheinteriorissubjecttoaresidualforeignmatterrequirement,mustbealternatelyflushedwithcleaningfluid.

Thisisdonebypumping2litersofcleaningfluidperminutethroughthecomponentfrombothsidesfor3minutesusingacommercialpistondiaphragmpump.

Thedirtycleaningagentthatrunsoutisthendirectedthroughthetestfilter.

Page5PV3370:2006-12

3.5.3Specialcase:tapping

E.g.fordryclutchdisks

Inthecaseofdryclutchdisks(in-housemounting),thedirtquantityisdeterminedbytappingthemonahardrubberplate20times(testplateapprox.10x20cm,ShoreAhardness80)insteadofbythestandardtestprocedure.

Detaileddescription:10disksareplacedonbothindexfingers,allowedtofallfrombetweenthehandsontothehardrubberplatefromaheightofapprox.5cmandimmediatelypickedupagain.Thisprocedureisrepeated19times.

Theprocedureisperformedonasuitablesurface(e.g.householdtraywithraisededge),andthediskparticlesorthedustisweighed.

Inthecaseofoiledclutchdisksfromclutchassembliesandpreviouslyoperatedtransmissions,thedirtquantityisdeterminedbyrinsingthedisksinsafetycleaningagent.Ultrasoundmustnotbeusedduetothedangerofdiskdisintegration.

3.6Workinstructions

Thetestsarecarriedoutspecificallyforeachcomponent.WorkinstructionsarethentobecompiledtakingintoaccountthedetailsfromVDA19.ExamplescanbefoundintheVDAAppendix.

3.7Filtrationandfilters

Filterthecleaningagentcontainingresidualforeignmatter.Avacuumfilteringunitwithaconstant-weight,pre-weighedfilterisusedforthispurpose(accuracy0,1mg).Thenre-rinsethefilterandresidualforeignmatterwithpetroleumetheranddrytoaconstantweight(observesafetyregulations).

Filtertype:Nylonfibrousfilter,15μmmeshwidth:

Diameter:47mm(largerdiametersarepermissible)

3.8Evaluation

Themassoftheresidualforeignmatterisdeterminedbyre-weighingtheconstant-weightdriedfilter,theresultinmg/partisdividedbythenumberofspecimens.

TheblankvalueistobetakenintoaccountinaccordancewithSection3.5.2.

Theparticlesizeand,ifapplicable,thecompositionarethendeterm