55
FuelControl Arm Serrated Spacer InterconnectRodRigging Figure405
Serrated Spacer
Outer Serrations
FuelControlArmSerratedSpacerAdjustment Figure502 EFFECTIVITY: 040-999
76-10-00
Jan
10/90
76-10-00
PIPER AIRCRAFT
PA-42-720(AdvancedTrainer)
MAINTENANCEMANUAL
B. Engine Control Adjustments Prior To First Run (continued)
Condition Lever Arm
Inner Serrations
High Idle Stop Adjustment (0.73%Per Turn)
E
Maximum Reverse -Power Stop
ConditionLever Cable
ADJUST
dieStop Adjustment Per Turn)
DONOT ADJUST
Condition Lever Cam
Maximum Forward Power (Ng) Stop 0.9%
WoodwardType II Fuel Control Unit -Left SideView
Figure 503
EFFECTIVITY:
040-999
76-10-00Jan10/90
PIPERAIRCRAFT
PA-42-720(AdvancedTrainer)
MAINTENANCEMANUAL
B. EngineControlAdjustmentsPriorTo First Run (continued)
Ng Maximum ForwardStop
0.33%N1Per Flat Condition Lever Cable
-DONOT ADJUST Dead Band Stop Screw aandAdjustment
DO NOT ADJUST PowerLever
High Idle Adjustment 0.3% Per Flat
MaximumReverse
0.6% N1 Per Flat
DO NOT ADJUST
Ng Maximum ForwardStop
IdleAdjustment2% Per Flat -(Loosen Lower Screw and Tighten
UpperScrew To Lower N1)
FuelControl Unit Lever Clamp Screw (LoosenBeforeAdjustingIdle)
FuelControl Unit Input Shaft(DO NOT LOOSEN NUT)
WoodwardType IIIFuelControlUnit -Left Side View Figure 504
PAGE176-10-00Jan 10/90 EFFECTIVITY: 040-999
PIPER AIRCRAFT
PA-42-720(AdvancedTrainer)
MAINTENANCEMANUAL
B. EngineControl Adjustments PriorTo First Run (continued)
2. PowerLevel Control Installation
Thisparagraphdescribespowercable adjustments requiredfollowinganengine installation. If a new power cableis installed,see Power Lever Control Cable for preliminary rigging.
(a)
Refer to Installation of Power LeverControlCable and complete items(1.)through(13.),as required.
(b)
Set cockpit powerleversin idle stop.
(c)
Refer to Figure406. Installriggingpin.
(d)
Adjustrod end bearingto align with holein top of throttle arm. Install using bolt,washers,and castellatednut. Safety withcotter pin.
(e)Tightenjam nut; crimp safetywasher.
(f) Removeriggingpin. Push cockpit thrustlevers full forward.
(g)Referto Figure 503 or 504. FuelControlUnitpower lever shouldcontactmaximumNg forward power stop. Adjust controlcablesystemas required. Do not adjust maximum forwardNg stop screwof fuel control unit.
CAUTION: WHEN ENGINE IS NOT RUNNING,ANY ATTEMPT TO MOVE POWER LEVERS INTO REVERSE POSITIONWHENPROPELLERPUSH-PULLWIREROPE CLEVIS IS CONNECTED TO PROPELLER CAM,WILL RESULT IN BENDING OR KINKING OF WIRE ROPE.
(h)
Refer to Figure405. Disconnectpush-pullwireropeclevisfrompropellercontrolcam.
(i)
Referto Figure 503 or 504. Movecockpitpowerleversinto reverse modeuntil fuel controlunit powerlevercontactsmaximumreversepowerstop.
() Referto Figure 406. Adjustreversepowerstopsothat gap X, between powerstopandseal nut, is at least 0.010 inches.
(k)
Movecockpitpower levers forwardpastidleposition,then back to idle gate.Adjustpower controlcablerod end bearing (Figure406),if required, so that:
(1.) Fuelcontrolunitlever idle stop (Figure503or 504) isbeing contacted.
(2.) Riggingpinholeson propeller controlcamassembly(Figure404) are aligned.
(I) Referto Figure 405. Connectpush-pullwire rope rearendclevisat second hole from topof propellercam with pin and washer;safetywith cotter pin.
3. FrontEnd Rigging
NOTE:Propellerand carbon blockmust be installed before making followingadjustments.
(a) Betavalveadjustment.
(1.) Location:Right side of propellergovernor.(SeeFigure505.)
(2.) Setcockpitpowercontrolleverin takeoff (full forward) position.
(3.) Faceof beta valveclevis slot should beflushwith beta stopnut. To adjust:
(a.) Disconnect wireropefrontend clevis from reversing arm. (b.) To maintain face of betavalveclevis slot flush withbetastopnut,adjust front end clevisto align with hole in reversing arm. (c.) Attach front endclevis to reversingarmwith bolt and castellated nut.
(4.) Tighten all back up nuts to a torque of 68 to 85 inchpounds,andsafety.
EFFECTIVITY:
040-999 76-10-00 Page
76-10-00 Jan 10/90
PIPERAIRCRAFT
PA-42-720(AdvancedTrainer)
MAINTENANCEMANUAL
B. Engine Control Adjustments Prior To First Run (continued)
3. Front End Rigging (continued)
(b) InterconnectRod Adjustment
(1.) Location: Right side of propeller governor. (See Figure 505.)
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