autofeathermicroswitchactuatingcylinder.Torelocatecylinderaccurately,record thedistancefromthe top of pedestalbrackettobottomofcylinderbeforemovingit.
(1.) Removecockpitenginecontrolspedestalaccesscovers. (2.) Refer to Figure501. Adjustsupportbracketjamnutsto set gapB betweentopof supportbracketandend of threadedcablehousingto 1.10± 0.10 inches. (3.) Toset a 1.00 inchgapA betweenbottomofclevis and topof connector, adjustlengthof
threadedmaleendof balljointconnector.
(4.) Check forproperthreadengagement.
(5.) Tightenalljamnuts.
(6.) Installpedestalaccesscovers.
(b)Throttle(Piper)ArmInstallation.(Referto Figure404.)
(1.) Placethrottlearmontopivotpin. (2.) Insertriggingpinthroughholeinthrottlearm,riggingplate,fuelcontrolactuatinglever,and propeller cam. (3.) Insertboltwithwasherfromrearto front,throughbottomofthrottlearm. (4.) Installwasherandnutonto bolt; tightennut.
EFFECTIVITY:
8
PAGE 040-999
Jan 10/9076-10-00
PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCEMANUAL
B. EngineControl Adjustments PriorTo First Run (continued)
1. Rigging Of Rear Linkage, Fuel Control Unit, and Propeller Control Cam Assembly (continued)
(c) InterconnectRod Installation. (Referto Figure 405.)
(1.) Disconnect push-pullcable clevis from propeller cam.
(2.) Loosen rod end bearing jam nuts.
(3.) Adjust rod ends so that the distance X between centers of installation bolt holes is 8.60
inches. (4.) Using bolt, washer, and castellated nut, attach one end of interconnect to bottom hole in fuel control actuating lever. (5.) Using bolt, washer, and castellated nuts, attach other end of interconnect rod in outer (top) hole of fuel control arm. (6.) Check rod end bearing thread engagement;
tighten jam nuts.
(7.) Tighten castellated nuts to 24 inch-pounds; safety with cotter pins.
(d) Low Idle Stop Adjustment (Refer to Figure 405.)
(1.) Insert rigging pin.
(2.) Install interconnectrod.
(3.) Check that fuel control unit power lever is firmly against low idle stop. Use serrated
spaceron fuel control unit to adjust.
NOTE: See Figure 503 for Woodward Type II fuel control unit. See Figure 504 for WoodwardTypeIIIfuel control unit.
°
~The followingwill result in a net arm travel of 0.6 clockwise.
(a.) Refer to Figures 502, 503 or 504, as appropriate. Unsafetyand loosen fuel control unit arm extension. (b.) Change inner serration alignmentby holding spacer and fuel control unit arm together and rotating one increment clockwise. (c.) Change outer serration alignmentby holding spacer against inner serrationsand rotating fuel control unit arm one increment counterclockwise.
(4.) Tighten fuel control unit arm extension to a torque of 30 inch-pounds, and safety. (5.) Remove rigging pin. Rotate throttle arm (Figures 404 and 406) full forward. Check that fuel control unit power lever contacts maximumforward Ng stop (Figures 503 or 504). (6.) Rotate throttle arm to full reverse position.Check that fuel control unit power lever contactsmaximumreversepower stop. (7.) Set throttle arm to idle (track) position; insert rigging pin.
EFFECTIVITY:
| 040-999 76-10-00 PAGE9
10/90
76-10-00Jan
PIPERAIRCRAFT
PA-42-720(AdvancedTrainer)
MAINTENANCEMANUAL
B. EngineControl Adjustments Prior To First Run (continued)
-FuelControlUnit Lever
Overall View -Engine Controls
Figure 1
EFFECTIVITY:
040-999
Jan 10/9076-10-00
PIPER AIRCRAFT
PA-42-720(AdvancedTrainer)
MAINTENANCEMANUAL
B. Engine Control Adjustments PriorTo First Run (continued)
PowerLever(Throttle)
Clevis -ClevisJam Nut -Swivel-BallJointConnector-
AutofeatherMicroSwitch- A-1.00 Inch
ActuatingCylinder
SwivelConnectorJamNut
B-1.10 Inch
Seal Nut +/-0.10
ThreadedCableHousing
Support Bracket
Jam Nuts
Support Bracket
Power(Throttle)CablePedestalAdjustments
Figure 501
Throttle(Piper)
Arm
Rigging Pin
(0.090InchDiameter)
Bolt, Washer,
and Nut
PropellerCam Assembly -Front to Rear View
Figure 404
EFFECTIVITY:
040-999 76-10-00Jan 10/90
PIPERAIRCRAFT
PA-42-720(AdvancedTrainer)
MAINTENANCEMANUAL
B. EngineControlAdjustmentsPriorToFirst Run (continued)
RodEnd- -Propeller
Bearing Cam
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