040-999
PAGE
76-10-00
Jan10/90
PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCE MANUAL
A. PowerLeverControlCable (continued)
3. Installationof Power LeverControlCable (continued)
(b) InstallCableBetween Power Leverand Wing Connection.(continued)
(10.)Installthreadedmaleend of swivel connector intocontrolleverclevis. Adjust sothat distanceA betweentop of swivel ball joint connectorandbottomof clevis is sameas checkedand recordedduring cable removal. If distanceis unknown, adjustto 1.00 inch.
(11.)Tightenclevisjam nut.
(12.)Positioncrossstart and autofeather microswitchactuatingcylinder so that the distance fromtop of support bracketto bottom of actuatingcylinderis the same as checked and recordedduringremoval. Tighten set screws.
(13.)Ifdistancefromtop of support bracket to bottom of actuatingcylinderis known, slide
actuatingcylinderas far up on cable as possibleand snug set screws. Exact cylinder adjustmentmustbe accomplished duringengineground run. Referto Autofeather Adjustmentthis section.
(14.)Connectand safetywing connector.
(15.)Checkthat cable is routed correctlyand not twisted; tighten cableclampsin wing leading
edge. (16.)Sealcableat fuselage. (17.)Supportingwing leading edge,connectwing deicehose. Install leading edgeon wing. (18.)Installenginecowlingandnacelleaccesscovers. (19.)lnstall wing leadingedgefairingson inboard side of nacelle andat fuselage. (20.)Install cockpit floor panels. Do not installpedestal access coversuntil final micro-switch
actuating cylinder and power cableadjustmentsare made. (21.)Runup engines and check alignment(Chart 2). Referto Engine RunningAdjustments
this sectionfor proceduresto makealignmentadjustments. (22.)Adjustmicroswitchactuatingcylinder. Refer to Autofeather Adjustmentthis section. (23.) nstall engine control pedestal accesscovers.
ReverseLinkage
Cam
Fuel Control Unit
InterconnectRod
Rigging Plate /
.090 Diameter
RiggingPin
PropellerControlCam Figure401
EFFECTIVITY:
Jan10/90 76-10-00
PIPER AIRCRAFT
PA-42-720(AdvancedTrainer)
MAINTENANCEMANUAL
A. PowerLeverControl Cable (continued)
Power (Throttle) Cable Housing
Swivel-Ball -
Joint Connector Rigging Pin
Power Lever Control Cable Engine Connections Figure402
evis Power Lever (Throttle) Clevis
Clevis Jam I
Autofeather Micro So witch A-1.00 Inch Actuating Cylinder
Swivel Connector Jam Nut
Seal Nut
ThreadedCable Housing
Support B racket
Power Lever Control Cable/Power Lever Connection
Figure 403
EFFECTIVITY:
040-999
76-10-00
PIPERAIRCRAFT
PA-42-720(AdvancedTrainer)
MAINTENANCEMANUAL
B. EngineControlAdjustmentsPriorToFirstRun
WARNING: WHENSERVICINGOR INSPECTINGVENDOREQUIPMENTINSTALLEDIN PIPER AIRCRAFT,IT IS THE USER'SRESPONSIBILITYTO REFERTO THEAPPLICABLE VENDORPUBLICATION.
ThissectioncontainsenginecontroladjustmentsrequiredafterinstallingthePratt& Whitney CanadaPT6A-61engine.Adjustmentsnecessarypriortofirstenginerun,andadjustmentsmadeduringand
followingthefirstenginerunaredescribed.
Therequiredadjustmentsinvolvethefuelcontrolunit,thepropellercontrolcamassemblyorcambox,andthepropellergovernor.Figure1showsthelocationofthesecontrols.
ThePT6A-61enginemaybeequippedwitheithera WoodwardTypeIIor Type III fuel controlunit. If
replacementisnecessary,theTypeIIIfuelcontrolunitissubstitutedfortheTypeII. Providingengines
areriggedcorrectly,nodifficultieswillbeencounteredbyhavingaTypeIIIfuelcontrolunitinstalledon
one engine, anda TypeII on theotherengine.
Thecompleteproceduremustbefollowedand all stepsperformedinthesequencespecified.
Referto Pratt& Whitney CanadaPT6A-61MaintenanceManual,p/n3034342,fortheoperatingprinciplesandfunctionsof enginemountedcontrols.
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