Textron Aviation Cessna 525 User manual

TEXTRONAVIATIONINC.
AIRCRAFTDIVISION
WICHITA,KANSAS67277
ELEVATORTRIMSERVOCAPSTANCABLERETENTION
IMPROVEMENT
ICASupplement
MODELNO:525
SUPPLEMENTNO:ICA-525-27-00007
SUPPLEMENTDATE:7/13/2020
©TEXTRONAVIATIONINC.
Form2261Rev1

TEXTRONAVIATIONINC.
AIRCRAFTDIVISION
WICHITA,KANSAS67277
REVISIONS
ICA-525-27-00007Rev:-Date:Jul/13/2020
ICASummaryPages1-6
ManualsAffectedDescriptionTitle
MaintenanceManual27-30-10pages
401-423
ELEVATORANDTABSYSTEMCOMPONENTS-
REMOVAL/INSTALLATION
•ThissectioncontainstherevisedproceduresforinstallationoftheGSM86ElevatorTrimServo
GearboxandCable.
AppendixA:IllustratedParts
Catalog
SeeAttached
PartsT able
AppendixB:WiringDiagram
Manual
NOTUSED
1.ExportCompliance
A.ThispublicationcontainstechnicaldataandissubjecttoU.S.exportregulations.Thisinformationhas
beenexportedfromtheUnitedStatesinaccordancewithexportadministrationregulations.Diversion
contrarytoU.S.lawisprohibited.
ECCN:9E991
2.RevisionBars
A.RevisionbarsinthisICAsupplementidentifynewICAsand/orchangestothecurrentICAsinthe
releasedmaintenancemanual.
•NewICAsthatarenotinthecurrentmaintenancemanualwillhavearevisionbarfromtopto
bottomalongtheleftmargin.
•ICAsthatareinthecurrentmaintenancemanualandhaveinformationadded,deletedorrevised
willhavearevisionbar(s)intheleftmarginadjacenttotheadded,deletedorrevisedinformation.
•Neworchangedillustrationswillhaveachangebarfortheentirelengthofthepage.
3.PageNumbering
A.ThepagenumbersystemforICAincludedinthissupplementhavethree-elementnumbersthatare
separatedbydashes.Thethree-elementnumberisfoundatthebottomrightcornerofthepage,left
ofthepagenumber.Thedateisfoundbelowthepagenumber.
B.Whenthechapter/systemelementnumberisfollowedwithzerosinthesection/subsystemand
subject/unitelementnumber(28-00-00),theinformationisapplicabletotheentiresystem.
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C.Whenthesection/subsystemelementnumberisfollowedwithzerosinthesubject/unitelement
number(28-21-00),theinformationisapplicabletothesubsystemsinthesystem.
D.Thesubject/unitelementnumberisusedtoidentifyinformationapplicabletounitsinthesubsystems.
Thesubject/unitelementnumbercontinuesinsequencefromthenumber-01-withthenumberof
subsystemunitsinwhichmaintenanceinformationisnecessary.
E.Allsystem/subsystem/unit(chapter/section/subject)maintenancedataisseparatedintospecied
typesofinformation:DescriptionandOperation,Troubleshooting,MaintenancePractices,etc.
Blocksofpagenumbersthatareinsequenceareusedtoidentifythetypeofinformation:
(1)DescriptionandOperationorTroubleshootinginformationmaynotbeincludediftheprocedure
iseasy.Whensubtopicsareshort,theymaybeputtogetherintotheMaintenancePractices
section.MaintenancePracticescanhaveamixofsubtopicsthatincludesinformationtoservice,
remove,install,adjust,test,clean,paintordoapprovedrepairs.
(2)Longerproceduresthatarenotaseasytodomaybeincludedinaspeciedsection.
Page1through99-DescriptionandOperation
Page101through199-Troubleshooting
Page201through299-MaintenancePractices
Page301through399-Servicing
Page401through499-Removal/Installation
Page501through599-Adjustment/T est
Page601through699-Inspection/Check
Page701through799-Cleaning/Painting
Page801through899-ApprovedRepairs
F.Atypicalpagenumber:
G.Illustrationsusethesamegurenumbersasthepageblockinwhichtheyappear.Forexample,Figure
202wouldbethesecondgureinaMaintenancePracticessection.
4.SupplementRevisions
A.Revisionstothissupplementmaybeaccomplishedifchangestothissupplementarerequiredafter
releaseoftheoriginalissueandpriortoincorporationintothemanualslistedintheREVISIONStable.
B.Allrevisionstothissupplementwillhavechangesidentiedindetailintherevisionblock(s)above.
C.AllpagesinthisICAsupplementwillhavethesamedateandarevalidasofthedateshown.
5.ICAIncorporationintoApplicableManuals
NOTE:MostICAsupplementswillbeincorporatedinthenextavailablerevisiontothemanuals
listedaboveandshouldbeusedinconjunctionwiththosemanualsuntilthenextavailable
revisionisreleased.
A.TheICASupplementListlocatedintheIntroductionsectionofeachmanuallistedintheREVISIONS
tablewillindicatetheincorporationstatusasofthereleasedateofthepublishedrevision.
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B.Themanualrevisionlevelofthesupplementincorporationwillbelistedinthe"ManualIncorporation
Status"columnintheICASupplementList,whenthoseICAsassociatedwiththatmanualhavebeen
incorporated.AfterICAsareincorporated,themanualthattheyareincorporatedinmustnowbeused
forthoseICAsinsteadofthesupplement.
•Basedonrevisioncycletimesfortheaffectedmanuals,MMICAs,WDMICAs,etc.inthis
supplementmaybeincorporatedinthemanualsatdifferenttimes.
•Therewillnotbearevisiontothissupplementtoindicateincorporationinthemanuals.Usersare
requiredtochecktheICASupplementListforeachmanualaffectedtodetermineincorporation
status.
C.ThissupplementwillbecompletelysupersededbythemanualslistedintheREVISIONStablewhen
ithasbeenincorporatedinallofthemanuals.
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TEXTRONAVIATIONINC.
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INTRODUCTION
1.Purpose
A.ThepurposeofthisSupplementistoprovidethemaintenancetechnicianwiththeinformation
necessarytoensurethecorrectfunctionalityandperformanceoftheELEVATORTRIMSERVO
CAPSTANCABLERETENTIONIMPROVEMENTontheCessnaModel525(M2)untilthis
informationgetsincorporatedintothenextrevisiontothemanualslistedinthe"REVISIONS"section
ofthissupplement.
B.ThisICAsupplementisdesignedtosatisfytherequirementsof14CFR23.1529"Instructionsfor
ContinuedAirworthiness"associatedwiththisinstallation.Thisdocumentisasupplementtothe
Model525(0685and-0800andOn)MaintenanceManualandwillbeincorporatedinthenextrevision
tothemanual.
C.Whenthisinformationisincorporatedinthenextrevisiontothemanualslistedinthe"REVISIONS"
section,thosemanualsshalltakeprecedenceoverthissupplementaldocument.Refertothe"ICA
SupplementList"inthe"Introduction"sectionoftherespectivemanualforthestatusofallapplicable
ICASupplements.
D.RevisionstothissupplementmayoccurifthereisachangetoanyoftheICAsinthissupplement
priortoincorporationintoalloftheaffectedmanuals.
NOTE:Thisdocumentmustbeplacedwiththeaircraftoperator'sTechnicalLibraryCD-ROM
orModel525(0685and-0800andOn)MaintenanceManualandincorporatedintothe
operator'sscheduledmaintenanceprogram.
2.Effectivity
A.TheseInstructionsforContinuedAirworthiness(ICA)areeffectiveforthefollowingaircraftmodeland
serialization.
ModelBeginningEffectivityEndingEffectivity
525(M2)-1068andOn
3.CompleteICADocuments
A.Thefollowingdocument(s),inconjunctionwiththissupplement,constitutetheInstructionsfor
ContinuedAirworthinessfortheELEVATORTRIMSERVOCAPSTANCABLERETENTION
IMPROVEMENTontheCessnaModel525(M2).Allitemsmustbeavailabletotheoperatoratinitial
delivery.
(1)Model525(0685and-0800andOn)MaintenanceManual
4.SystemComponents
A.RefertoAppendixA:IllustratedPartsCatalog
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TEXTRONAVIATIONINC.
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LISTOFINSTRUCTIONSFORCONTINUEDAIRWORTHINESS
1.Model525(0685and-0800andOn)MaintenanceManual
A.Chapter27FlightControls
(1)ATA27-30-10ElevatorandT abSystemComponents-Removal/Installation
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TEXTRONAVIATIONINC.
AIRCRAFTDIVISION
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INSPECTIONPROGRAMANDAIRWORTHINESSLIMITATIONS
1.ContinuousInspectionProgram
A.ThisICASupplementdoesnotaffectthecurrentinspectionprogram.
2.AirworthinessLimitations
A.CessnaAircraftCompanyModel525(0685and0800andOn)MaintenanceManual,Chapter4,
AirworthinessLimitations,containsthesystemandairframelimitationsfortheModel525(M2).
NOTE:TheAirworthinessLimitationssectionisFAA-approvedandspeciesmaintenance
requiredunderSection43.16and91.403ofTitle14CodeofFederalRegulations,unless
analternativeprogramhasbeenFAAapproved.
(1)Therearenonew(oradditional)airworthinesslimitationsassociatedwiththisequipmentand/or
installation.
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CESSNA®
MODEL525(SERIALS-0685AND-0800ANDON)
MAINTENANCEMANUAL
ELEVATORANDTABSYSTEMCOMPONENTS-REMOVAL/INSTALLATION
1.General
A.Thissectionprovidesinformationrelatingtotheremovalandinstallationofcomponentsassociated
withtheelevatorandelevatortrimtabsystems.Forcontrolcableremoval/installationandrigging
information,refertoElevatorandT abSystemControlCables-MaintenancePractices.
B.Forremovalandinstallationoftheelevator,refertoChapter55,Elevator-Removal/Installation.
2.ToolsandEquipment
A.Foralistoftoolsandequipment,refertoFlightControls-General.
3.ForwardElevatorSectorAssemblyRemoval/Installation
A.RemovetheForwardElevatorSectorAssembly(RefertoFigure401).
(1)Removecopilotsseat.RefertoChapter25,CrewSeats-MaintenancePractices.
(2)Gainaccesstotheforwardelevatorsectorbyremovingpanel241BTC.RefertoChapter6,
AccessPlatesandPanelsIdentication-DescriptionandOperation.
(3)Gainaccesstotheelevatorcontrolcableturnbucklesinthetailconebyremovingpanels321BC
and321FC.RefertoChapter6,AccessPlatesandPanelsIdentication-Descriptionand
Operation.
(4)Disconnecttheelevatorforwardtrimcablesfromthechainatthecontrolpedestalinthecockpit.
RefertoElevatorandTabSystemControlCables-MaintenancePractices,ElevatorForward
TrimCablesRemoval/Installation.
(5)Disconnecttherudderforwardtrimcontrolcablesfromthechainatthecontrolpedestalinthe
cockpit.RefertoRudderandTabSystem-MaintenancePractices,RudderTrimTabControl
CablesandStopBlocksRemoval/Installation.
(6)Disconnectthefuselageailerontrimcablesfromthechainatthecontrolpedestalinthecockpit.
RefertoAileronandT abSystemControlCables-MaintenancePractices,FuselageAileronTrim
CableRemoval/Installation.
(7)Removesafetyclipsandloosenelevatorcontrolcableturnbuckles.
(8)Removenuts,washersandscrewssecuringelevatorcontrolcablestoforwardsector.
(9)Taganddisconnectelevatorcontrolcables.
CAUTION:Becarefultopreventdamagetotheavionicsdisplayswhenyou
disconnecttheconnectinglinkfromtheforwardelevatorsector.
Thecontrolcolumncanfallforwardanddamagethedisplaysif
protectivepadsorfoamcoversarenotinstalledontheavionics
displays.
(10)Putaprotectivepadorfoamcoverontheavionicsdisplays.
(11)Removeanddiscardthecotterpinfromthenutandtheboltthatconnecttheforwardelevator
connectinglinktotheforwardelevatorsector.
(a)Removethenut,washers,andboltandcarefullymovethecontrolcolumnsforwardasyou
disconnecttheconnectinglinkfromthesector.
(12)Removetheaftpedestalswitchpaneltogetaccesstotheailerontrimgearbox.RefertoChapter
31,InstrumentandSwitchPanels-MaintenancePractices,AftPedestalSwitchPanelRemoval/
Installation.
(13)Removethescrews,washers,andnutsthatattachtheailerontrimgearboxtothepedestal
structure.
(14)Removethescrewsthatattachtheruddertrimgearboxtothepedestalstructure.
(15)Removethescrewsthatattachthetrimbearingplatetotheuppersectorbracket.
(16)Liftthesprocketssufcientlytopullthebearingplateawayfromtheuppersectorbracket.
(a)Removethebearingplatefromtheairplane.
(17)Removescrewssecuringstopblocktoupperandlowersectorbrackets.
(18)Removesafetywire,pivotboltandwasherssecuringsectorassemblytoupperandlowersector
brackets.
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CESSNA®
MODEL525(SERIALS-0685AND-0800ANDON)
MAINTENANCEMANUAL
A89911
6310T1168
A6315T1168
A
Pivot Bolt
Upper Bracket
Stop Block
Stop Bolt
Elevator Cable
(Rigt)
Forward
Elevator
Sector
Elevator Cable
(Left)
Lower Bracket
Rod End
Connecting Link
Spacer
DETAIL A
Screw
Trim Bearing Plate
ForwardElevatorSectorInstallation
Figure401(Sheet1)
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CESSNA®
MODEL525(SERIALS-0685AND-0800ANDON)
MAINTENANCEMANUAL
(19)Removescrewssecuringuppersectorbrackettolowersectorbracket.Removeuppersector
bracketandstopblock.
(20)Removeelevatorsectorfromairplane.
B.InstalltheForwardElevatorSectorAssembly(RefertoFigure401.).
(1)Positionforwardelevatorsectorassemblyinitspositiononthelowersectorbracket.
(2)PuttheNAS43DD6-29spacerontopoftheforwardelevatorsectorassemblybearing.
(3)Puttheuppersectorbracketinitspositionontheforwardelevatorsector.
(a)Looselyinstallthepivotboltwiththewasherthroughtheuppersectorbracket,spacer,
forwardelevatorsector,andlowersectorbracket.
(4)Putthestopblockinitspositionbetweentheupperandlowersectorbracket.
(a)Looselyinstallthescrewsthatattachthestopblocktotheupperandlowersectorbrackets.
(5)Installthescrewsthatattachtheuppersectorbrackettothelowersectorbracket.
(6)Tightenthescrewsthatattachthestopblocktotheupperandlowersectorbrackets.
(7)Tightenthepivotbolt.
(a)Safetythepivotboltwithsafetywire.RefertotheCitationStandardPracticesManual,
Chapter20,Safetying-MaintenancePractices,LockwireInstallation.
(8)Installelevatorcablestoelevatorsectorassemblyusingscrews,washersandnuts.
(9)Looselyputthetrimbearingplateassembly,aileronsprocket,andruddertrimsprocketintheir
positionontheuppersectorbracket.
(a)Makesurethatthechainsareintheircorrectroutingpositionsonthesprockets.
(b)Installthescrewsthatattachthetrimbearingplateassemblytotheuppersectorbracket.
(10)Puttheruddertrimgearboxinitspositiononthepedestalstructure.
(a)Installthescrews.
(11)Puttheailerontrimgearboxinitspositiononthepedestalstructure.
(a)Installthescrews,washers,andnuts.
(12)Connectthefuselageailerontrimcablestothechainatthecontrolpedestalinthecockpit.Refer
toAileronandT abSystemControlCables-MaintenancePractices,FuselageAileronTrimCable
Removal/Installation.
(13)Connecttherudderforwardtrimcontrolcablestothechainatthecontrolpedestalinthecockpit.
RefertoRudderandT abSystem-MaintenancePractices,RudderTrimTabControlCablesand
StopBlocksRemoval/Installation.
(14)Connecttheelevatorforwardtrimcablestothechainatthecontrolpedestalinthecockpit.Refer
toElevatorandTabSystemControlCables-MaintenancePractices,ElevatorForwardTrim
CablesRemoval/Installation.
(15)Attachthecontrolcolumnconnectinglinktoelevatorsectorassemblyusingbolt,washers,
nutandcotterpin.RefertotheCitationStandardPracticesManual,Chapter20,Safetying-
MaintenancePractices,CotterPinSafetying.
(16)Dotheriggingoftheelevatorcontrolsystemcablesandtheadjuststopblocks.RefertoElevator
andTabSystemControlCables-Adjustment/Test.
(17)Installtheaftpedestalswitchpanel.RefertoChapter31,InstrumentandSwitchPanels-
MaintenancePractices,AftPedestalSwitchPanelRemoval/Installation.
(18)Installpanels321BCand321FC.RefertoChapter6,AccessPlatesandPanelsIdentication-
DescriptionandOperation.
(19)Installpanel241BTC.RefertoChapter6,AccessPlatesandPanelsIdentication-Description
andOperation.
(20)Installthecopilotseat.RefertoChapter25,CrewSeats-MaintenancePractices.
(21)Removetheprotectivepadorfoamcoverfromtheavionicsdisplays.
4.ElevatorAftSectorAssemblyRemoval/Installation
NOTE:Theleftelevatorsectorchannelisremovabletofacilitateremovaloftheaftelevatorsector.
Therightsectorchannelisrivetedtostructure.
A.RemoveElevatorAftSectorAssembly(RefertoFigure402.).
(1)Gainaccesstotheelevatorcontrolcableturnbucklesandtheelevatorautopilotservocablesin
thetailconebyremovingpanels321BC,321EC,and321FC.RefertoChapter6,AccessPlates
andPanelsIdentication-DescriptionandOperation.
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CESSNA®
MODEL525(SERIALS-0685AND-0800ANDON)
MAINTENANCEMANUAL
(2)Removethesafetyclipsandloosentheelevatorcontrolcableandtheelevatorautopilotservo
cableturnbuckles.
(3)Gainaccesstotheaftelevatorsectorandcontrolcablesbyremovingpanels340ATC,340AL,
340AR,340BL,340BR,340CL,340DL,340CRand340ER.RefertoChapter6,AccessPlates
andPanelsIdentication-DescriptionandOperation.
(4)Removescrewsandnutssecuringretainersoverpushrodattachboltatsector.Remove
retainers.
(5)Removecotterpin,nut,washersandboltsecuringelevatorpushrodstoelevatoraftsector
assembly.
(6)Removenuts,washersandscrewssecuringelevatorcontrolcablestoelevatorsectorassembly.
(a)Carefullylettheelevatorsdown.
(7)Taganddisconnectelevatorcontrolcablesfromtheelevatoraftsectorassembly.
(8)Removenuts,washersandboltssecuringelevatorsectorstopblockstochannels(upper)and
attachbrackets(lower).Removeelevatorsectorstopblocks.
(9)Removebolts,washersandnutsfromlowerendofaftelevatorsectorchannelassembly(left).
(10)Removeboltsandwashersfromupperendofaftelevatorsectorchannelassembly(left).
(11)Removebolts,washersandnutsfromoutersurfaceofaftelevatorsectorchannel(left).
(12)Removecotterpin,nut,washersandsectorpivotbolt.
(13)Removeelevatorsectorassemblyandelevatorsectorchannel(left)fromairplane.
B.InstallElevatorAftSectorAssembly(RefertoFigure402.).
(1)Positionelevatorsectorassemblyandelevatorsectorchannel(left)assemblyinverticaln.
Ensureopeningforelevatorpushrodretainingboltisbelowelevatorsectorcenterline.
(2)Looselyinstallthesectorpivotbolt,washers,andnuttosecuretheelevatorsectorandthe
elevatorsectorchannel(left)totherigidsectorchannel(right).
(3)Looselyinstallthebolts,washers,andnutstothelowerendoftheelevatorsectorchannel(left).
Makesurethatthewashersareinstalledbetweentheboltheadsandthechannel,andbetween
thenutsandthechannel.
(4)Positiontheelevatorstopsbetweentheelevatorsectorchannels(upper)andbetweentheattach
brackets(lower).
(a)Looselyinstallthebolts,washers,andnuts.
(5)Looselyinstallthebolts,washers,andnutstosecuretheoutersurfaceoftheelevatorsector
channel(left)tothestructure.Makesurethatthewashersareinstalledbetweentheboltheads
andthechannel,andbetweenthenutsandthestructure.
NOTE:Theupperboltisthelongestboltsecuringtheelevatorleftchannelassemblyto
thestructure.
(6)Looselyinstalltheboltsandthewashersintotheupperendoftheelevatorsectorchannel.
(7)Fullytightenallofboltsthatwerelooselyinstalledandinstallthecotterpinstothenecessary
locations.RefertotheCitationStandardPracticesManual,Chapter20,Safetying-Maintenance
Practices,CotterPinSafetying.
(8)Installariggingpinintheaftelevatorsector.
(9)Puttheelevatorpushrodsintheirpositionattheaftelevatorsector.
(a)Puttheboltwithonewasherthroughthepushrodsandtheaftsector.
1Makesurethatthewasherisbetweentheboltheadandtheoutboardsideoftheleft
pushrodbearing.
2Makesurethatthetrailingedgesoftheelevatorsareushwiththetrailingedgeof
thehorizontalstabilizer.
3Ifthetrailingedgesarenotush,adjustthepushrodsuntiltheyareush.Referto
ElevatorandT abSystemControlCablesAdjustment/Test.
(b)Installthesecondwasherandthenutonthebolt.
1Makesurethatthewasherisbetweenthenutandtheoutboardsideoftheright
pushrodbearing.
2Installthecotterpin.RefertotheCitationStandardPracticesManual,Chapter20,
Safetying-MaintenancePractices,CotterPinSafetying.
(10)Installretainersoverpushrodattachboltwithscrewsandnuts.
(11)Attachelevatorcontrolcablestosectorusingscrewswashersandnuts.Rigelevatorcontrol
cables.RefertoElevatorandTabSystemControlCables-MaintenancePractices.
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CESSNA®
MODEL525(SERIALS-0685AND-0800ANDON)
MAINTENANCEMANUAL
(12)Removetheriggingpinfromtheaftelevatorsector.
(13)Installverticalnaccesspanels340ATC,340AL,340AR,340BL,340BR,340CL,340DL,
340CRand340ER.RefertoChapter6,AccessPlatesandPanelsIdentication-Description
andOperation.
(14)Installaftbaggagecompartmentpanels321BC,321EC,and321FC.RefertoChapter6,Access
PlatesandPanelsIdentication-DescriptionandOperation.
5.ElevatorPushrodsandHornsRemoval/Installation
A.RemoveElevatorPushrods(RefertoFigure402).
(1)Gainaccesstopushrodsbyremovingpanels340ATC,340BLand340BR.RefertoChapter6,
AccessPlatesandPanelsIdentication-DescriptionandOperation.
(2)Removescrewsandnutssecuringretainersoverpushrodattachmentboltlocationonsector.
Removeretainers.
(3)Removecotterpin,nut,washersandboltsecuringelevatorpushrodstoelevatorsector
assembly.
(4)Removecotterpin,nut,washersandboltsecuringelevatorpushrodstoelevatorhorn.
(5)Removeelevatorpushrodsfromairplane.
B.InstallElevatorPushrods.(RefertoFigure402).
(1)Installbolts,washers,andnutstosecuretheelevatorpushrodstotheelevatorhorns.
(a)Makesurethatthewashersareinstalledonbothsidesofeachpushrodclevis.
(b)Installthecotterpins.RefertotheCitationStandardPracticesManual,Chapter20,
Safetying-MaintenancePractices,CotterPinSafetying.
(2)Installariggingpinintheaftelevatorsector.
(3)Puttheelevatorpushrodsintheirpositionattheaftelevatorsector.
(a)Puttheboltwithonewasherthroughthepushrodsandtheaftsector.
1Makesurethatthewasherisbetweentheboltheadandtheoutboardsideoftheleft
pushrodbearing.
2Makesurethatthetrailingedgesoftheelevatorsareushwiththetrailingedgeof
thehorizontalstabilizer.
3Ifthetrailingedgesarenotush,adjustthepushrodsuntiltheyareush.Referto
ElevatorandT abSystemControlCablesAdjustment/Test.
(b)Installthesecondwasherandthenutonthebolt.
1Makesurethatthewasherisbetweenthenutandtheoutboardsideoftheright
pushrodbearing.
2Installthecotterpin.RefertotheCitationStandardPracticesManual,Chapter20,
Safetying-MaintenancePractices,CotterPinSafetying.
(4)Installretainersoverpushrodattachmentboltlocationonsectorwithscrewsandnuts.
(5)Dotheriggingoftheelevatorcontrolsystemcables.RefertoElevatorandTabSystemControl
Cables-Adjustment/T est.
(6)Removetheriggingpinfromtheaftelevatorsector.
(7)Installpanels340ATC,340BLand340BR.RefertoChapter6,AccessPlatesandPanels
Identication-DescriptionandOperation.
C.RemovetheElevatorHorn(RefertoFigure402).
NOTE:Theremovalprocedurefortheleftandtherightelevatorhornistypical.
(1)Gainaccesstotheelevatorhornandtheaftelevatorsectorbyremovingpanels340BL
and340ATC.RefertoChapter6,AccessPlatesandPanelsIdentication-Descriptionand
Operation.
(2)Removetheelevatortogetaccesstotheelevatorhorn.RefertoChapter55,Elevator-Removal/
Installation.
(3)Removethecotterpin,nut,washersandboltsecuringtheelevatorhorntothehorizontal
stabilizerattachtting.
(4)Removethecotterpin,nut,washersandboltsecuringtheelevatorpushrodtotheelevatorhorn.
(5)Removetheelevatorhornfromtheairplane.
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CESSNA®
MODEL525(SERIALS-0685AND-0800ANDON)
MAINTENANCEMANUAL
A89912
6310T1168
A6363T1005
A
Elevator Horn
(Rigt)
Elevator Horn
(Left)
Elevator
Torque
Tube
Attac Fitting
Elevator Horn
Pusrod
Clevis
End
Elevator Pusrod
(Rigt)
Elevator Pusrod
(Left)
Jam Nut
Pusrod Eye End
Retainer
Rigid Cannel
(Rigt)
Stop Block
(Down)Elevator
Sector
(Aft)
Stop
Block
(Up)
Stop Bolt
Jam NutElevator
Cables
Attac Bracket
(Stop Block)
Removable Cannel
(Left)
DETAIL A
ElevatorAftSector,PushrodandHornInstallation
Figure402(Sheet1)
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CESSNA®
MODEL525(SERIALS-0685AND-0800ANDON)
MAINTENANCEMANUAL
D.InstalltheElevatorHorn(RefertoFigure402).
NOTE:Theinstallationprocedurefortheleftandtherightelevatorhornistypical.
(1)ShanksealboltswithTypeXClassBsealant,refertotheCitationStandardPracticesManual,
Chapter20,Fuel,Weather,Pressure,andHigh-TemperatureSealing-MaintenancePractices.
(2)Installbolts,washers,nutandcotterpintosecuretheelevatorhorntothehorizontalstabilizer
attachtting.
(3)Installtheelevator.RefertoChapter55,Elevator-Removal/Installation.
(4)Installariggingpinintheaftelevatorsector.
(5)Temporarilyattachthepushrodtotheelevatorhornwiththebolt.
(a)Makesurethatthetrailingedgeoftheelevatorisushwiththetrailingedgeofthehorizontal
stabilizer.
1Ifnecessary,disconnectthepushrodandadjusttheclevisenduntilthetrailingedge
isushwhenthepushrodisconnected.
(6)Fullyinstallthebolt,washers,nuttoattachtheelevatorpushrodtotheelevatorhorn.
(a)Makesurethatthereisonewasheroneachsideofthepushrodclevis.
(b)Installthecotterpin.RefertotheCitationStandardPracticesManual,Chapter20,
Safetying-MaintenancePractices,CotterPinSafetying.
(7)Removetheriggingpinfromtheaftelevatorsector.
(8)Installpanels340BLand340ATC.RefertoChapter6,AccessPlatesandPanelsIdentication
-DescriptionandOperation.
6.ControlColumnRemoval/Installation
A.RemoveControlColumn(RefertoFigure403).
(1)DisengagePITCHTRIM,AUDIO/MKR1,AUDIO/MKR2,XPDR1,XPDR2,ANGOFATTACK
,AFCSANDAFCSCONTROLcircuitbreakers.T agcircuitbreakers:DONOTENGAGE-
MAINTENANCEINPROGRESS.
(2)Removepilotandcopilotseats.RefertoChapter25,CrewSeats-MaintenancePractices.
(3)Removescrewssecuringcontrolcolumnbootstooorpanels.
(4)Gainaccesstothecontrolcolumnbyremovingpanels241BT,241CT ,241BTC,242CTand
242AT.RefertoChapter6,AccessPlatesandPanelsIdentication-DescriptionandOperation.
(5)Disconnecttheaileroncrossovercable,forwardaileronsynchronizingcable,andaileroncontrol
cables.RefertoAileronandT abSystemControlCables-MaintenancePractices.
(6)Removecontrolcolumnbootassemblyfromcontrolcolumn.
CAUTION:Becarefultopreventdamagetotheavionicsdisplayswhenyou
disconnecttheconnectinglinkfromtheforwardelevatorsector.
Thecontrolcolumncanfallforwardanddamagethedisplaysif
protectivepadsorfoamcoversarenotinstalledontheavionics
displays.
(7)Putaprotectivepadorfoamcoverontheavionicsdisplays.
(8)Removeanddiscardthecotterpinfromthenutandtheboltthatconnecttheforwardelevator
connectinglinktotheforwardelevatorsector.
(a)Removethenut,washers,andboltandcarefullymovethecontrolcolumnsforwardasyou
disconnecttheconnectinglinkfromthesector.
(9)Disconnectelectricalconnectors(PC313andPF313)tocontrolcolumnwirebundles.
(10)Removeboltsandwasherssecuringcontrolcolumntorquetubetocontrolcolumn.
(11)Ifinstalled,recordthenumberandpositionofshimsinstalledbetweenthecontrolcolumntorque
tubeandthecontrolcolumn.
(a)Removetheshimsfromtheairplane.
(12)Removethescrewsthatattachtheaileronpulleybrackettoleftandtherightsupportplate
assembliesattheseatrailsupportstructure,
(a)Removetheaileronpulleybracketfromtheairplane.
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CESSNA®
MODEL525(SERIALS-0685AND-0800ANDON)
MAINTENANCEMANUAL
A89913
6310T1168
A6315T1041
NOTE:
For stick saker unit removal/installation,
refer to te stall warning stick saker−
maintenance practices.
A
Rigt Hand Control Weel
Left Hand Control Weel
Rigt Hand Control
Column Assembly
Left Hand Control
Column Assembly
Stick
Saker
Unit
(NOTE)
Boot
Link Assembly
Waser
Turnbuckle
Clip−on Nut
Bearing Support
Assembly
BoltWaser
Nut
Cotter Pin
DETAIL A
Turnbuckle
Torque Tube
Assembly
Bearing Support
Assembly
Screw
ControlColumnInstallation
Figure403(Sheet1)
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CESSNA®
MODEL525(SERIALS-0685AND-0800ANDON)
MAINTENANCEMANUAL
(13)Removethescrewsthatattachtheleftandtherightsupportplateassembliestothesupport
structureandthesupportangleassembliesforthepilot'sandthecopilot'sseatrails,
(a)Removethesupportplateassembliesandthesupportangleassembliesfromtheairplane.
(14)Movethecontrolcolumntorquetubeafttoreleasecontrolcolumn.
(15)Removecontrolcolumnfromairplane.
(16)Ifnecessary,removethecontrolcolumntorquetubefromtheairplane.
NOTE:Itisnecessarytoturnthetorquetubeatanangletoremoveit.
B.InstallControlColumn.(RefertoFigure403).
(1)Ifnecessary,putthecontrolcolumntorquetubeinitspositionintheairplane.
NOTE:Itisnecessaryturnthetorquetubeatanangletoputitinitsposition.
(a)Ifremoved,puttheshimsintheirrecordedpositionbetweenthecontrolcolumntorquetube
andthecontrolcolumn.
(b)Installtheboltsandthewashersthatattachthecontrolcolumntorquetubetothecontrol
column.
(2)Positioncontrolcolumnintobearingmount.
(3)Installtheboltsandthewashersthatattachthecontrolcolumntorquetubetothecontrolcolumn.
(4)Examinethecontrolcolumnforlateralfreeplay.
(a)Ifnecessary,installshimsbetweenthecontrolcolumntorquetubeandthecontrolcolumn.
NOTE:Notmorethantwoshimsarepermittedoneithersideofthetorquetube.Ifmore
thantwoshimsarenecessaryoneithersideofthetorquetube,itisnecessaryto
replaceoneorbothofthebearingmounts.
(5)Positioncontrolcolumnbootassemblyoncontrolcolumn.
(6)Puttheleftandtherightsupportplateassembliesandthesupportangleassembliesintheir
positiononthesupportstructureforthepilot'sandthecopilot'sseatrails,
(a)Installthescrews.
(7)Puttheaileronpulleybracketinitspositionbetweentheleftandtherightsupportplate
assembliesattheseatrailsupportstructure,
(a)Installthescrews.
(8)Installariggingpinintheforwardelevatorsector.
(9)Puttheconnectinglinkinitspositionontheforwardelevatorsector.
(a)Movethepilot'scontrolcolumnuntiltheanglebetweentheaftfaceofthecolumnandthe
oorboardsis92degrees,+0.5or-0.5degreeswhentheboltthatattachesittothesector
canbeinstalledfreely.
(10)Iftheboltwillnotinstallfreely,dothestepsthatfollowtoadjusttheconnectinglink.
(a)Loosentheconnectinglinkjamnut.
(b)Adjusttherodendontheconnectinglinkuntilyoucaninstalltheboltfreelywhenthecontrol
columnisatthespeciedangle.
(c)Tightentheconnectinglinkjamnut.
(d)Puttheconnectinglinkinitspositionattheforwardsector.
1Installthebolt,washers,nut,andcotterpin.RefertotheCitationStandardPractices
Manual,Chapter20,Safetying-MaintenancePractices,CotterPinSafetying.
(11)Removetheriggingpinfromtheforwardelevatorsector.
(12)Attachtheaileroncrossovercable,forwardaileronsynchronizingcable,andaileroncontrol
cables.RefertoAileronandT abSystemControlCables-MaintenancePractices.
(13)Rigaileroncables.RefertoAileronandTabSystemControlCables-MaintenancePractices.
(14)Identifyandconnectelectricalconnectors(PC313andPF313)tocontrolcolumnwirebundles.
(15)Installpanels241BT,241CT,241BTC,242CTand242AT.RefertoChapter6,AccessPlates
andPanelsIdentication-DescriptionandOperation.
(16)Installbootoncontrolcolumnandsecuretooorboardpanelswithscrews.
(17)Installpilotandcopilotseats.RefertoChapter25,CrewSeats-MaintenancePractices.
(18)Removemaintenancetag,engagePITCHTRIM,AUDIO/MKR1,AUDIO/MKR2,XPDR1,
XPDR2,ANGOFATTACK,AFCSandAFCSCONTROLcircuitbreakers.
(19)Removetheprotectivepadorfoamcoverfromtheavionicsdisplays.
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CESSNA®
MODEL525(SERIALS-0685AND-0800ANDON)
MAINTENANCEMANUAL
7.ElevatorTrimTabActuatorRemoval/Installation
A.RemovetheTrimT abActuator.(RefertoFigure404).
(1)DisengagethePITCHTRIMcircuitbreakerontheleftcircuitbreakerpanelinthecockpit.
(2)Gainaccesstothetrimtabactuatorandtheturnbucklebyremovingpanels321CTCand331AB
(right)or332AB(left).RefertoChapter6,AccessPlatesandPanelsIdentication-Description
andOperation.
(3)Findthetrimactuatorthatwillberemoved.
(a)Usedanapprovedclamptotemporarilyholdtheoppositeelevatorinthestreamlined
position.
(b)Usethepitchtrimwheelinthecockpittomanuallymovetheelevatortrimtabuntilitisush
withtheelevator.
(c)Installaninclinometerontheoppositeelevatorandtheelevatortrimtab.
1Zerotheinclinometers.
(d)Usethepitchtrimwheelinthecockpittomanuallymovetheelevatortrimtabs4degrees
(+1or-1degree)downfromthestreamlinedposition.
1Usetapetoholdthetrimtabtotheelevator.
(4)Removetheclampfromtheelevator.
(5)Measureandrecordthedistancefromtherodendbearingstotheactuatorfaceplate.
CAUTION:Makesurethatthetrimpushrodsdonotcatchontheadjacent
structurewhentheyaredisconnectedfromthetrimactuators.
Damagetothestructurecanoccuriftheelevatortabismoved
whenthepushrodsaredisconnected.
(6)Carefullylifttheelevatorswithyourhandstogetaccesstotheelevatortrimactuatorpushrods.
(7)Removethecotterpins,nuts,washersandboltsthatattachtheelevatortrimactuatorpushrods
totrimtabactuator.
(a)Disconnectthepushrodsfromtheactuator.
(b)Puta#10boltthroughthetrimactuatorrodendbearingstokeeptheminthecorrect
alignment.
(8)Removetheelevatortogetaccesstotheelevatortrimactuator.RefertoChapter55,Elevator-
Removal/Installation.
(9)Loosentheelevatortrimandtheelevatorelectrictrimcableturnbuckles.
(10)Removethescrewandthespacerfromthetrimtabactuatorchainguard.
(11)Remove/liftthetrimtabactuatorchainfromthetrimtabactuatorsprocket.
(12)Removetheboltssecuringtheactuatortothehorizontalstabilizer.
(13)Removetheactuatorfromtheairplane.
B.InstalltheTrimTabActuator(RefertoFigure404.).
(1)Ifanewelevatortrimtabactuatorisinstalled,dothestepsthatfollow:
(a)Installa#10boltbetweenbothrodendbearingstokeeptheiralignment.
(b)Turnthedrivesprockettoputtherodendbearingsattherecordeddistancefromthe
actuatorfaceplate.
(2)Iftheinitialelevatortrimtabactuatorisinstalled,dothestepsthatfollow:
(a)Lubricateelevatortrimtabactuatorwith5565450-28grease.RefertoChapter12,Flight
ControlServicing.
(b)Usethedrivesprockettofullyextendandretractthetrimtabactuatorbetweenfourand
sixtimes.
(c)Turnthedrivesprockettoputtherodendbearingsbacktotherecordeddistancefromthe
actuatorfaceplate.
(3)Putthetrimtabactuatorinitspositionatthehorizontalstabilizer.
(4)Installthetrimtabactuatorchainoverthetrimtabactuatorsprocket.
NOTE:Installchain(s)onactuatorsprocket(s)asshowninFigure404,witheyeofactuator
pushrodalignedwiththeelevatorbearings.Cableassembly/chaininterfaceshould
beeven(topandbottom)whentheelevatortrimsystemisproperlyriggedand
placedinitsneutralpositionof4degreesdown.
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ICA-525-27-00007Form2261Rev1

CESSNA®
MODEL525(SERIALS-0685AND-0800ANDON)
MAINTENANCEMANUAL
A89914
6310T1168
A6363T1064
AA6363T1064
DETAIL ARigt Side Sown
Left Side Opposite
NOTE:
Install cain on actuator sprockets as sown wen eye of actuator pusrod is aligned
wit elevator bearings. Cains to be equally distributed (top and bottom) wen properly
rigged and trimmed to neutral position of 4 degrees down.
A
Elevator Trim Tab Horn
Adjustable
Pusrod
Assembly
(Inboard)
Pusrod Assembly
(Outboard)
Elevator Trim Tab Actuator
Cable
Cain
Pin
Cotter Pin
Cotter Pin
Nut
Waser
Bolt
BoltSpacer
Screw
A
A
Left Hand
Trim Actuator
LBL
29.50Cain
(NOTE)
15.61 Inces
(+0.12 or −0.12 Inc)
Left Trim
CableRigt Trim
CableRBL
29.50
Trim Interconnect Cable
Cain
(NOTE)
Rigt Hand
Trim Actuator
15.61 Inces
(+0.12 or −0.12 Inc)
Pulley Bracket
VIEW A−A
ElevatorTrimTabActuatorInstallation
Figure404(Sheet1)
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CESSNA®
MODEL525(SERIALS-0685AND-0800ANDON)
MAINTENANCEMANUAL
(5)Installthespacerandthescrewinthetrimtabactuatorchainguard.
(6)Removethe#10boltfromthetrimactuatorrodendbearings.
(7)Installtheboltsinthehorizontalstabilizerandthetrimtabactuator.
(8)Installtheelevator.RefertoChapter55,Elevator-Removal/Installation.
(9)Securetheelevatorpushrodstotheactuatorusingthebolts,washers,nutsandcotterpins.
(10)Dotheriggingoftheelevatorcontrolsystemcables.RefertoElevatorandTabSystemControl
Cables-Adjustment/T est
(11)EngagethePITCHTRIMcircuitbreakerontheleftcircuitbreakerpanelinthecockpit.
C.Installpanels321CTCand331AB(right)or332AB(left).RefertoChapter6,AccessPlatesand
PanelsIdentication-DescriptionandOperation.
D.RemovetheTrimT abPushrods(RefertoFigure404).
(1)DisengagethePITCHTRIMcircuitbreakerontheleftcircuitbreakerpanelinthecockpit.
(2)Setthecontrollocksystemtokeeptheelevatorposition.
(3)Removethecotterpins,nuts,washersandboltssecuringthetrimtabpushrodstotheelevator
trimtabhorn.
(4)Removethecotterpins,nuts,washersandboltssecuringthetrimtabpushrodstotheelevator
trimtabactuator.
(5)Puta#10boltthroughthetrimactuatorrodendbearingstokeeptheminthecorrectalignment.
(6)Removethepushrodsfromtheairplane.
(7)Removethecotterpinandthepinthatconnectstheclevisendsfortheadjustablepushrodand
thepushrod.
(8)Iftheadjustablepushrodwillbereplaced,measureandrecorditslength.
E.InstalltheTrimTabPushrods(RefertoFigure404).
(1)Ifanewelevatortrimtabpushrodisinstalled,setittotherecordedlengthoftheinitialadjustable
pushrod.
(2)Removethe#10boltfromthetrimactuatorrodendbearings.
(3)Putthepushrodassemblyinitsoutoardpositionintheairplane.
(a)Installthebolts,washers,nuts,andcotterpinsthatconnectthepushrodassemblytothe
elevatortrimtabhornandtheelevatortrimtabactuatorrodend.RefertotheCitation
StandardPracticesManual,Chapter20,Safetying-MaintenancePractices,CotterPin
Safetying.
(4)Puttheadjustablepushrodassemblyinitsinboardpositionintheairplane.
(a)Installthebolt,washer,nut,andcotterpinthatconnectsthepushrodassemblytothe
elevatortrimtabhorn.RefertotheCitationStandardPracticesManual,Chapter20,
Safetying-MaintenancePractices,CotterPinSafetying.
(b)Examinetheboltfortheadjustablepushrodforasliptatthetrimactuatorinboardrod
endbearing.
1Ifnecessary,adjustthepushroduntilithasaslipt.
(c)Installthebolt,washer,nut,andcotterpinthatconnectsthepushrodassemblytothe
actuatorrodend.RefertotheCitationStandardPracticesManual,Chapter20,Safetying
-MaintenancePractices,CotterPinSafetying.
(5)Installthecotterpinandthepinthatconnectstheclevisendsfortheadjustablepushrodandthe
pushrod.RefertotheCitationStandardPracticesManual,Chapter20,Safetying-Maintenance
Practices,CotterPinSafetying.
(6)EngagethePITCHTRIMcircuitbreakerontheleftcircuitbreakerpanelinthecockpit.
(7)Makesurethattheelevatortrimtabriggingiscorrect.RefertoElevatorandTabSystemControl
Cables-MaintenancePractices.
8.ElevatorTrimControlWheelRemoval/Installation
A.RemoveElevatorTrimControlWheel(RefertoFigure405).
(1)DisengagethePITCHTRIMcircuitbreakerontheleftcircuitbreakerpanelinthecockpit.
(2)Turnthecontrolwheeltoputtheelevatortrimpointerattheforwardedgeofthesafetake-off
band.
(3)Makeamarkonthetrimwheelcircumferenceacrossfromthetrimpointer.
(4)Makeamarkontheoutboardfaceofthetrimwheeltoshowtheupdirection.
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