Textron Cessna - Page 24

McCAULEYPROPELLERSYSTEMS
CONSTANTSPEEDCOMPOSITEOWNER/OPERATOR
INFORMATIONMANUAL
•brushblockassembly
(a)Thebrushblock,deiceharnesses,andslipringassemblyconductelectricalpowertothe
propellerbladedeicebootelementswhichthenheat.
(b)Theheatmeltsalayeroftheicewhichallowstheremainingicetoberemovedfromthe
propellerbladesbycentrifugalforce.
F.PropellerDeiceBoots(ifinstalled).
(1)Thedeicebootsareconstructedoffabric-reinforced,abrasion-resistantrubber.Electricaldeice
bootshaveawiremeshorfoilelementthatheatsascurrentissuppliedtotheboot.Adeice
timercontrolsthecurrentcyclethatisappliedtoindividualbladesorbootsegments.Theouter
surfaceofthedeicebootthatisexposedtotheenvironmenthasaglossynish,whiletheside
thatisbondedtothepropellerhasadull,mattenish.
G.DeiceHarness(ifdeiceisinstalled)-Thedeiceelectricalharnessesconnectthedeicebootstothe
slipringassemblytocompletethedeiceelectricalcircuit.
H.DeiceSlipRingAssembly(ifdeiceisinstalled)-Thedeiceslipringassemblyisconstructedof
machinedaluminumwithbronzecommutatorringsbondedtooneside.Studstoattachthedeice
leadsforeachbladearelocatedonthepropellersideoftheplatter.Thesearebrazedtothe
commutatorringsandpassthroughholesprovidedforthatpurpose.Slipringassembliesmaybe
securedtothehub,tothestarterringgear,orthealternatorbeltdrivepulley.
I.Forpropellersequippedwithananti-icesystem,refertoAnti-IceSystemsectioninthismanual.
NOTE:Refertotheairplaneserviceormaintenancemanualforamoredetaileddescriptionofthe
propelleranti-icecomponents.
2.OverhaulPeriod
A.Allpropellersaretobeoverhauledatspecicintervals.RefertothePropellerInspectionsection,
TimeBetweenPropellerOverhaulforrequiredpropelleroverhaulintervals.Propellersshallalsobe
overhauledorrepairedasrequiredforbladesurfaceconditions.
3.PropellerModelDesignation
A.McCauleyusesamodeldesignationsystemtoidentifyspecicpropellers.Thisisdonebyutilizinga
combinationofhubandblademodeldesignations.
B.HubModelDesignation.
(1)Thehubmodeldesignationissteelstampedonthepropellerhub.RefertoFigure3foran
illustrationofthehubmodeldesignation:
C.BladeModelDesignation
(1)Allbladesaremarkedonthebuttendwithablademodeldesignation,propellertypecerticate
number,andbladeserialnumber.Thisstampingisnotvisiblefromtheoutsideofthepropeller
assembly.RefertoFigure4forillustrationsofthepropellerblademodeldesignationblade
stampingandanillustrationofthepropellerbladebuttend.
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©McCauleyPropellerSystemsJan9/2017