hc-sl-61-277 governor - installation of hartzell propeller inc. … · 2020. 11. 10. · hartzell...

HARTZELL PROPELLER INC.

SERVICE LETTERTransmittal Sheet

HC-SL-61-277

Governor - Installation of Hartzell Propeller Inc. Governors

September 16, 2020

This page transmits a revision to Service Letter HC-SL-61-277. • OriginalIssue,datedNov05/08 • Revision1,datedAug06/09 • Revision2,datedOct01/15 • Revision3,datedJan08/16 • Revision4,datedOct03/16 • Revision5,datedFeb01/17 • Revision6,datedSep16/20

Changesareshownbyachangebarintheleftmarginoftherevisedpages.

Revision6isissuedtochangethefollowingintheServiceLetter: - RevisedtheinstallationinstructionsintheAccomplishmentInstructionssection

(S-1-90governormodelsaresuppliedwithaB-3873-7bolttoconnectthecontrolcabletothegovernorcontrolarm).

ThisServiceLetterisreissuedinitsentirety.


SERVICE LETTERTransmittal Sheet

HC-SL-61-277

(Thispageisintentionallyblank.)


SERVICE LETTERHC-SL-61-277


HC-SL-61-277Page1of16

Nov 05/08Revision 6, dated Sep 16/20

1. PlanningInformationA. Effectivity

(1) AllHartzellPropellerInc.governorsareaffectedbythisServiceLetter.

wARNINg: dONOTuSEOBSOLETEOROuTdATEdINFORmATION.PERFORmALLINSPECTIONSORwORkINACCORdANCEwITHTHEmOSTRECENTREvISIONOFTHISSERvICELETTER.INFORmATIONCONTAINEdINTHISSERvICELETTERmAyBESIgNIFICANTLyCHANgEdFROmEARLIERREvISIONS.FAILuRETOCOmPLywITHTHISSERvICELETTERORTHEuSEOFOBSOLETEINFORmATIONmAyCREATEANuNSAFECONdITIONTHATmAyRESuLTINdEATH,SERIOuSBOdILyINJuRy,ANd/ORSuBSTANTIALPROPERTydAmAgE.REFERTOTHESERvICELETTERINdExFORTHEmOSTRECENTREvISIONLEvELOFTHISSERvICELETTER.

B. ConcurrentRequirements(1) Additionalservicedocumentsmayapplytothecomponents/propellers

affectedbythisServiceLetter.CompliancewithadditionalservicedocumentsmaybenecessaryinconjunctionwiththecompletionoftheAccomplishmentInstructionsinthisServiceLetter.RefertotheHartzellPropellerInc.websiteatwww.hartzellprop.comforacross-referenceofservicedocuments.

C. Reason(1) ThisServiceLetterprovidesinstallationinformationforgovernorsmanufactured

byHartzellPropellerInc.d. description

(1) ThisServiceLetterprovidesAdditionalmaintenanceInformation(AmI).(2) ThisServiceLetterprovidesgeneralinstallationinstructionsforHartzell

PropellerInc.governorsifairframemanualsorotherinstallationinformationisnotavailable.

(3) Theseinstructionsmaybeusedinconjunctionwithinstallationinformationsuppliedbytheairframemanufacturer,orusedasgeneralinstallationguidelineswhengovernorinstallationinformationisnotprovidedbytheairframemanufacturer.

(4) InformationprovidedbytheairframeorenginemanufacturersupersedesinformationprovidedinthisServiceLetter.

©2008,2009,2015,2016,2017, 2020-HartzellPropellerInc.-Allrightsreserved






E. Compliance(1) CompliancewiththisServiceLetterisoptional.

F. Approval(1) ThistechnicaldocumentisapprovedbyHartzellPropellerInc.

g.manpower(1) manpowerwillbevariable,dependinguponthelocationofthegovernorpadon

theengine,cowlingremoval,linkageconnections,etc.H. weightandBalance

(1) governorweightwillvarydependingupondesign.Ifnecessary,weighthegovernorbeforeinstallation.

CAuTION: dONOTuSEOBSOLETEOROuTdATEdINFORmATION.PERFORmALLINSPECTIONSORwORkINACCORdANCEwITHTHEmOSTRECENTREvISIONOFAdOCumENT.

I. References(1) Pilot'sOperatingHandbook(POH).(2) HartzellPropellerInc.StandardPracticesmanual202A(61-01-02)-

(volume7,ConsumablematerialsandPackagingandStorageisavailable ontheHartzellPropellerInc.websiteatwww.hartzellprop.com)

2. materialInformationA. materialNecessaryforEachPropeller/Component

PartNumber description usedonB-1104-1 gasket,governor HartzellPropellerInc.A-1series

governorsonlyB-1104 gasket,governor AllotherHartzellPropellerInc.

governors






B. ConsumablematerialsCmNumber description QtyCm23 StoddardSolvent ARCm11 AcetoneordenaturedAlcohol ARCm116 Threadlocker,Removable ARCm288 methylEthylketone(mEk) ARCm219 methylPropylketone(mPk) AR - dowCorning®7ReleaseCompound AR

NOTE: AllCmnumbersormaterialsinthisServiceLetterrefertotheConsumablematerialschapterofHartzellPropellerInc.StandardPracticesmanual202A(61-01-02).

Governor GasketFigure 1

Screen Raisedscreentowardgovernor

TPI-m

B-0148






3. AccomplishmentInstructionsA. Installation

wARNINg: duRINggOvERNORINSTALLATION,AIRFRAmEANdENgINEmANuFACTuRER’SmANuALSANdPROCEduRESmuSTBEFOLLOwEd,BECAuSETHEymAyCONTAININSTRuCTIONSvITALTOAIRCRAFTSAFETyTHATARENOTCONTAINEdINTHISSERvICELETTER.

CAuTION: APPLICATIONOFRELEASECOmPOuNdPERmITSEASIERREmOvALOFTHEgASkETwHENTHEgOvERNORISREmOvEd,BuTCANCONTRIBuTETOLEAkINgATTHEgASkET.uSERELEASECOmPOuNdSPARINgLy.

(1) Ifdesired,applyacoatingofdowCorning®7releasecompoundorequivalenttothenewmountinggasket.

(2) makesurethatthecorrectstudsareinstalledontheenginegovernormountingpadinaccordancewiththeengineorairframemanual.(a) Thestudsmustbeofsufficientlengthtopermitatleastonethreadtobe

visibleaboveeachmountingnutafterthegovernorisinstalled.(b) Replacementofthegovernormountingsstudsmayberequiredifthe

governormountingstudsdonotextendsufficientlythroughthegovernorattachmentnutwheninstallingaHartzellgovernor.1 LycomingP/N31C-16mountingstudisoneexampleofalonger

mountingstud.(3) usingasolventlistedinParagraph2.B.,cleantheenginegovernormounting

pad,thegovernormountingsurface,andthestuds.(4) withtheraisedscreenonthemountinggasketfacingthegovernor,putthe

mountinggasketoverthestudsontheenginegovernormountingpad. RefertoFigure1.

(5) Putthegovernoronthemountingstuds.(a) Ifnecessary,rotatethegovernordriveshaftortheenginecrankshaftto

alignthesplinesonthegovernorshaftwiththeenginedrivegear.






CAuTION1: uSEAdEQuATEPRECAuTIONSTOPROTECTTHEgOvERNORASSEmBLyFROmdAmAgEwHENITISINSTALLEdONTHEAIRCRAFTENgINE.dONOTgOugEORPuTPRESSuREAgAINSTTHEgOvERNORBOdywHENINSTALLINgORREmOvINgTHENuTS.

CAuTION2: FORE,u,v,ANdSSERIESgOvERNORS,uSECAuTIONwHENuSINgANOPENENdwRENCHTOTIgHTENTHEmOuNTINgNuTS.THEwRENCHCANgETCAugHTBETwEENTHEmOuNTINgNuTANdgOvERNORBOdywALL,CAuSINgTHEwALLOFTHEgOvERNORBOdyTOCRACkANdLEAk.

(6) Installthecorrectwashersandnutsonthemountingstudsinaccordancewiththeengineorairframemanual.

(7) Torquethenutsto18-20ft-lbs(24.5-27.1N•m)unlessotherwiseindicatedintheengineorairframemanual.

(8) Connectthepropellerpush/pullcontrolcabletothegovernorcontrolarm (S-1-90governors:usethesuppliedB-3873-7bolttoconnectthecontrolcable).(a) Agovernorcontrolarmmayhavemorethanoneholeforconnectingthe

push/pullcontrol.usetheholespecifiedintheairframemanual.Ifnoholeisspecified,usetheholethatpermitsthecontrolarmtomovethroughoutthefullrangeofmovementwiththeleastrestriction.

B. OperationalChecks-groundOperation(1) variableRPmgovernors

(a) Cyclethepropellercontrolthroughoutitsoperatingrangefromlowtohigh,orasdirectedbythePilot'sOperatingHandbook(POH).

(b) Repeatthestepinparagraph3.B.(1)(a)atleastthreetimestopurgeairfromthepropellerhydraulicsystemandtointroducewarmedoiltothecylinder.

NOTE: Pitchchangeresponseonthefirstoperationfromlowtohighbladepitchmaybeslow,butshouldspeeduponthesecondandthirdcycles.

(c) makesureofcorrectoperationfromlowpitchtohighpitchandthroughoutthe operating range.

(d) PerformthestaticRPmcheckinaccordancewiththeapplicablePropellerOwner'smanual.

(e) ShutdowntheengineinaccordancewiththePOH.(f) makeadjustmentsasnecessaryinaccordancewiththePOH.






B-3808-5 LockNut

B-6330 Beveledwasher

RPM Adjustment Components for Fixed RPM GovernorsFigure 2

TPI-m

B-0118

maximumRPmAdjustmentScrew

103669 Sealwasher

OrienttheB-6330beveledwasherwiththebeveledsidetowardthe103669sealwasher.






(2) FixedRPmgovernors(a) PerformthestaticRPmcheckinaccordancewiththeapplicablePropeller

Owner'smanual.1 IfRPmadjustmentofthegovernorisnecessary,shutdownthe

engineinaccordancewiththePOHandadjustthemaximumRPmadjustmentscrewonthegovernor.RefertoFigure2.a LoosentheB-3808-5locknutonthemaximumRPm

adjustmentscrew.b TurnthemaximumRPmadjustmentscrewclockwise

toincreaseengineRPm,counter-clockwisetodecrease engineRPm.

NOTE: OnequarterturnofthemaximumRPm adjustmentscrewwillchangeenginespeedapproximately30RPm.

CAuTION: OvERTIgHTENINgTHEB-3808-5LOCkNuTmAy dAmAgETHE103669SEALwASHER,RESuLTINg INANOILLEAk.

c TorquetheB-3808-5locknutto96-132In-Lb (10.9-14.9N•m).RefertoFigure2.

(b) PerformthestaticRPmcheckinaccordancewiththeapplicablePropellerOwner'smanual.

(c) ShutdowntheengineinaccordancewiththePOH.(d) makeadjustmentsasnecessaryinaccordancewiththePOH.(e) ExaminethegovernorforoilleakingatthemaximumRPmadjustment

screw.RefertoFigure2.1 Ifanoilleakisdetected,checktheB-3808-5locknutfor

propertorque.2 Iftheoilleakcontinues,replacethe103669sealwasher.






Maximum RPM Adjust Screw/Lock Nut Locations (Variable RPM Governors Only)Figure 3

maximumRPmAdjustmentScrew/LockNut



control_arms.ai

maximumRPmAdjustment Screw/LockNut (Screwheadorientation isoptional)

maximumRPmAdjustmentScrew/LockNut maximumRPm

AdjustmentScrew/LockNut

RPmStop






C. OperationalChecks-In-Flight(1) variableRPmgovernors

CAuTION: dONOTPERmITTHEPROPELLERTOOvERSPEEdduRINgTHESEOPERATIONALCHECkS.SIgNIFICANTdAmAgETOTHEENgINEANd/ORPROPELLERmAyRESuLT.

(a) makearecordofthemaximumpropellerRPmduringtakeoffacceleration.(b) Climbtoasafealtitudeandlevelouttheaircraft.(c) LeavethepropellercontrolinthemaximumRPmposition.(d) monitorthepropellerRPmfor3to5minutes.

1 IfthepropellerexceedsthemaximumRPm:a usingthepropellercontrollever,reducethepropellerRPmto

achievethedesiredmaximumRPm.b Leavethepropellercontrolinthenewlyadjustedmaximum

RPmposition.c Landtheaircraftandshutdowntheengine.d Removetheaircraftcowlingtoaccessthegovernor.e AdjustthemaximumRPmscrewsothatthescrewjusttouches

thegovernorcontrolarmstop.RefertoFigure3.f Torquethelocknutto30-36In-Lb(3.4-4.0N•m). g Performanin-flightchecktoconfirmthecorrectsettings.






2 IfthepropellerRPmisbelowmaximumRPm:a makearecordofthemaximumpropellerRPmandlandthe

aircraft.b Removetheaircraftcowlingtoaccessthegovernor.c TurnthemaximumRPmscrewcounter-clockwisetoincrease

RPmorclockwisetodecreaseRPmasdesired. RefertoFigure3.(1) TurnthemaximumRPmscrew3to4turns

counter-clockwisetoincreasethemaximumRPmapproximately100RPm.

(2) TurnthemaximumRPmscrew3to4turnsclockwisetodecreasethemaximumRPmapproximately100RPm.

d Torquethelocknutto30-36In-Lb(3.4-4.0N•m).e determinemaximumRPmchangerelativetotheadjustmentof

themaximumRPmscrew.f Performanin-flightchecktoconfirmifthecorrectmaximum

RPmhasbeenobtained.






(2) FixedRPmgovernors

CAuTION: dONOTPERmITTHEPROPELLERTOOvERSPEEdduRINgTHESEOPERATIONALCHECkS.SIgNIFICANTdAmAgETOTHEENgINEANd/ORPROPELLERmAyRESuLT.

(a) makearecordofthemaximumpropellerRPmduringtakeoffacceleration.(b) Climbtoasafealtitudeandlevelouttheaircraft.(c) monitorthepropellerRPmfor3to5minutes.(d) IfRPmadjustmentisnecessary:

1 Landtheaircraftandshutdowntheengineinaccordancewith thePOH.

2 LoosentheB-3808-5 locknutonthemaximumRPm adjustmentscrew.RefertoFigure2.

3 TurnthemaximumRPmadjustmentscrewclockwise toincreaseengineRPm,counter-clockwisetodecrease engineRPm.RefertoFigure2.

NOTE: OnequarterturnofthemaximumRPmadjustmentscrewwillchangeenginespeedapproximately30RPm.

CAuTION: OvERTIgHTENINgTHEB-3808-5LOCkNuTmAydAmAgETHE103669SEALwASHER,RESuLTINg INANOILLEAk.

4 TorquetheB-3808-5locknutto96-132In-Lb(10.9-14.9N•m). RefertoFigure2.

(e) determinethemaximumRPmchangerelativetotheadjustmentofthemaximumRPmadjustmentscrew.

(f) Performanin-flightchecktoverifyproperadjustmentofthe maximumRPm.

(g) ExaminethegovernorforoilleakingatthemaximumRPmadjustmentscrew.RefertoFigure2.1 Ifanoilleakisdetected,checktheB-3808-5locknutfor

propertorque.2 Iftheoilleakcontinues,replacethe103669sealwasher.






LockNut

Washer

CapHeadScrew

ControlLever

RPmStop

ReturnSpring

governorHead

Control Lever AdjustmentFigure 4

ControlShaft

TPI-m

B-0147






d. ControlLeverAdjustment(1) S-1andS-4SeriesgovernorswithTopmountedControlLevers

(a) CoarseAdjustmentoftheControlLever-RefertoFigure41 Removethelocknutandwasher.

CAuTION: dONOTREmOvETHERPmSTOPORTHERETuRNSPRINg.IFTHERPmSTOPORTHERETuRNSPRINgAREREmOvEd,THEgOvERNORmuSTBERETuRNEdTOHARTzELLPROPELLERINC.ORASERvICEFACILITyAuTHORIzEdTOREPAIRmECHANICALLyACTuATEdgOvERNORSTOvERIFyTHERPmSETTINg.

2 Removethecontrolleverfromthecontrolshaft.3 Installthecontrolleveronthecontrolshaftinthedesiredposition.

a Thecontrollevercanbeturnedoverforanadditional 15degreesofcoarseadjustment.

4 Installthewasherandthelocknut.a Torquethelocknutto72-96In-Lbs(8.2-10.8N•m).

(b) FineAdjustmentoftheControlLever-RefertoFigure41 ForgovernorswithoutSafetywireontheCapHeadScrews:

a Loosen,butdonotremovethesixcapheadscrewsthatattachthegovernorhead.

b Rotatethegovernorheaduntilthecontrolleverisatthe desiredangle.

c Removeonecapheadscrewfromthegovernorhead.d Cleanthecapheadscrewtoremoveanydriedlocking

compound.e ApplythreadlockingadhesiveCm116tothethreadsofthecap

headscrew.f Installthecapheadscrewintothegovernorhead.g Torquethecapheadscrewto21-25In-Lbs(2.4-2.8N•m).h Repeatsteps3.d.(1)(b)1 cthrough3.d.(1)(b)1 gforthefive

remainingcapheadscrews.






(c) ForgovernorswithSafetywireontheCapHeadScrews:1 Removethesafetywirefromthesixcapheadscrewsthatattachthe

governorhead.2 Loosen,butdonotremovethesixcapheadscrews.3 Rotatethegovernorheaduntilthecontrolleverisatthe

desiredangle.4 Torquethesixcapheadscrewsto21-25In-Lbs(2.4-2.8N•m).5 Safetywirethesixcapheadscrewsinaccordancewith

NASm33540.

Maximum RPM Adjustment Screw Head OrientationFigure 5

Notch

LockNut


Height"A"


TPI-m

B-0199

mountingPost






E. maximumRPmAdjustmentScrewHeadOrientation(1) variableRPmS-1SeriesgovernorsOnly

NOTE: maximumRPmadjustmentscrewsthatdonothaveaslotinthethreadedportionofthescrewcanbeinstalledwiththeheadon eithersideofthemountingpost.RefertoFigure5.

(a) measuretheheight"A"ofthemaximumRPmadjustmentscrewthattouchestheRPmstop.RefertoFigure5.1 makearecordoftheheightmeasurement.

(b) RemovethelocknutandthemaximumRPmadjustmentscrew.(c) InstallthemaximumRPmadjustmentscrewheadinthedesired

orientationtotheheightrecordedinstep3.E.(1)(a).(d) InstallthelocknutontheoppositesideofthemaximumRPmadjustment

screwhead.1 Torquethelocknutto30-36In-Lbs(3.4-4.0N•m).

F. ContactInformationHartzellPropellerInc.Attn.:HartzellPropellerInc.ProductSupportOnePropellerPlacePiqua,Ohio45356-2634uSAPhone:(001)937.778.4379Fax:(001)937.778.4215E-mail:[email protected]






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hc-sl-61-277 governor - installation of hartzell propeller inc. … · 2020. 11. 10. · hartzell...

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