Allison Transmission 3500 SP

5.5KEEPINGFLUIDCLEAN
CAUTION:Containersorllersthathavehadantifreezesolutionor
enginecoolantinthemmustNEVERbeusedtoholdtransmission
uid.Antifreezeandcoolantsolutionscontainethyleneglycoland
waterwhich,ifputintothetransmission,cancausedamage.
Makesurethattransmissionuidisclean,freeofchemicalcontaminants,and
withinuidspecicationlimits.RefertoT able5–2.
Handletransmissionuidinclean,residue-freecontainersandllersto
preventanyforeignmaterialorchemicalcontaminationofthetransmission
uid.
5.6FLUIDANALYSIS
Transmissionsusedinhighcyclerateapplicationsshoulduseuidanalysis
tomakesureuidischangedassoonasneeded.Transmissionprotection
anduidchangeintervalsmaybeoptimizedbymonitoringuidoxidation
accordingtothetestsandlimits.RefertoTable5–2.Useonlyoneuid
analysisrmtoensureconsistentandaccurateuidanalysis.Referto
Technician’sGuideforAutomaticTransmissionFluid,GN2055EN,orSIL
17-TR-96foradditionalinformation.
Table5–2.FluidOxidationMeasurementLimits
TestLimit
Viscosity
±25changefromnewuid
TotalAcidNumber(TAN)+3.0
*
changefromnewuid
Solids
2percentbyvolume
*
mgofpotassiumhydroxide(KOH)toneutralizeagramofuid.
5.7TRANSMISSIONFLUIDREFILL
Theuidrellvolumewillbelessthanthevolumelistedfortheinitialll
duetosomeuidremainingintheexternalcircuitsaswellasinvarious
transmissioncomponentcavities.Afterrell,verifytheuidleveliscorrect
(referto5.8PERIODICFLUIDLEVELCHECKS).
NOTE:QuantitieslistedinTable5–3areapproximateanddonot
includeexternallinesandcoolerhoses.
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