Piper TWIN COMANCHE PA-30 User manual

'PIPER
AIRPLANESERVICEMANUAL
CARD1OF4
0TWINCOMANCHE
PA-30
PA-39
PIPER
AIRCRAFT
CORPORATION
PARTNUMBER753645 REVISED:OCT.1,1998
lAl

0
Published by
TechnicalPublications
© The New Piper Aircraft, Inc.
2926PiperDrive
VeroBeach,Florida 32960
U.S.A.
GAMA
Member
GeneralAviation
ManufacturersAssociation
0
1A2

PIPER TWIN COMANCHE SERVICE MANUAL
AEROFICHEREVISIONSTATUS
Revisionsto this servicemanual 753
reissued(onpaperonly)December29,
Revisions
645, originally published
1972are as follows: (on paper only) August 1, 1963 and
Publication Date
ORIGINAL (Paper only)
COMPLETE REISSUE (Paper only)
COMPLETE REISSUE (Paper only)
1st
2nd
3rd
4th
5th
6th
7th
8th*
August 1, 1963
June 25, 1969
December 29, 1972
January 31, 1974
June 28, 1976
October 6, 1977
April 26, 1978
September 10, 1979
April 6, 1981
October 28, 1982
October 1, 1998
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None
1,2 and 3
1 and 2
1,2 and 3
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1,2,3 and 4
1,2,3 and 4
1,2, 3, and 4
* Revisions appear in all four cards. Accordingly,
discard your existing card set and replace it with
these cards dated October 1, 1998.
A. Consult
thelatestPiper
Customer
ServiceInformation
Catalog
No. 1753-755
(Aerofiche)
for
currentrevisiondatesforthismanual.
B. The GeneralAviation ManufacturersAssociation (GAMA) has developed specificationsfor
microfichereproduction of aircraft publications. The information compiled in this Aerofiche
Service Manual will be kept currentby revisionsdistributedperiodically.
These revisions will
supersedeall previous revisions and will be complete Aerofichecard replacementsand shall
supersedeAerofiche
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andList ofTables
forallfichein thisset is providedat the beginningofCard 1.Each
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Revised: 10/1/98 PREFACE
1A3

PIPER TWIN COMANCHE SERVICE MANUAL
EFFECTIVITY
Thisservice
manualiseffective
forallPA-30andPA-39airplanesasfollows:
ModelName ModelNumber SerialNumbers ModelYears
TwinComanche
TwinComanche B and
TwinComanche Turbo B
Twin ComancheC and
Twin ComancheTurbo C
Twin Comanche C/R and
Twin Comanche Turbo C/R
PA-30
PA-30
PA-30
30-2thru 30-901. less 30-853
30-853and 30-902 thru 30-1744.
less 30-171
30-1717 and 30-1745 thru 30-2000
1963- 1965
1966- 1968
1968- 1970
1970- 1972
PA-39 39-1 thru 39-155
PARTS
This manualgenerallydoesnot containhardwarecalloutsfor installation.Hardwarecalloutsare only
indicatedwherea specialapplicationis required.Toconfirmthe correcthardwareused,referto thePA-
30/39TwinComanchePartsCatalogP/N753646.andFAR43forproperutilization.
WARNINGS,CAUTIONSANDNOTES
Theseare usedto highlightoremphasizeimportantinformation.
- WARNING-
OPERATINGPROCEDURES,
PRACTICES,ETC., WHICH
MAY RESULTIN
PERSONAL INJURY OR LOSS OF LIFE IF NOT CAREFULLY
FOLLOWED.
- CAUTION-
OPERATING PROCEDURES, PRACTICES, ETC., WHICH IF NOT
STRICTLYOBSERVED
MAYRESULTIN DAMAGETO EQUIPMENT.
- Note-
An operatingprocedure,condition,etc.,whichisessentialto emphasize.
0
PREFACE Added:10/1/98
1A4

PIPER TWIN COMANCHE SERVICE MANUAL
SECTION INDEX GUIDE
SECTION SUBJECT GRID
NO.
PARTI - Information Commonto PA-30and PA-39
AEROFICHECARDNO.1
IINTRODUCTION IAI5
II HANDLING AND SERVICING IA19
II INSPECTION ID15
IV STRUCTURES IE5
VSURFACECONTROLS 1G7
VI NOT USED
APPENDIX I CONTROL CABLE INSPECTION PROCEDURE IK1
AEROFICHE CARD NO.2
VII
VII
VIIIA
IX
LANDING GEAR AND BRAKE SYSTEM
POWER PLANT (NORMALLY ASPIRATED)
POWER PLANT (TURBOCHARGED)
FUEL SYSTEM
2A9
2D18
2G1
2121
XINSTRUMENTS 2K14
AEROFICHE CARD NO. 3
XI ELECTRICAL SYSTEM 3A9
XII ELECTRONICS 3G12
AEROFICHECARDNO.4
XIII HEATINGAND VENTILATINGSYSTEM 4A7
XIV ACCESSORIESAND UTILITIES 4E7
PART I -Information Uniqueto PA-39
IINTRODUCTION 4G5
II HANDLINGAND SERVICING 4G9
IV STRUCTURES 4G16
VSURFACECONTROLS 4G19
VIII POWER PLANT (NORMALLYASPIRATED) 4H5
VIIIA POWERPLANT (TURBOCHARGED) 4H11
XINSTRUMENTS 4H17
XI ELECTRICALSYSTEM 4H19
XII
Revised:10/1/98
ELECTRONICS 411
PREFACE
1A5

PIPER TWIN COMANCHE SERVICE MANUAL
LIST OF ILLUSTRATIONS
- PARTI
FigureNo. Subject Grid
No,
2-1. ThreeView
ofTwinComanche,
Serial
Nos.30-1to 30-852
incl.and
30-854to30-901inc ................................................................................................. A23
2-2. ThreeView
ofTwin
Comanche,
Serial
Nos.30-853,
to 30-2000
incl ............................ IA24
2-3. StationReference
Lines,
Fuselage
...................................................................................
B9
2-4. StationReference
Lines,
Wing
andStabilator..................................................................
1B10
2-5. AccessPlatesandPanels,
Fuselage
Interior..................................................................... 11
2-6. AccessPlates
andPanels,Fuselage,
SerialNos.
30-1
to 30-852
incl.,and
30-854
to 30-901
incl................................................................... B12
2-7. Access
Platesand
Panels,
Fuselage,
Serial
Nos.30-853,
30-902
to 30-2000
incl ............................................................................................................
B13
2-8. Access
Platesand
Panels,
Wings......................................................................................
1B14
2-8a. Torque
Wrench ormula...................................................................................................
IB17
2-9. Jacking
Arrangements
......................................................................................................
IB22
2-10. W
eighing
Airplane............................................................................................................
IB23
2-11. Leveling
Airplane,
Serial
Nos.
30-1to30-852incl.
and
30-854to 30-901
incl..................................................................................................
IB24
2-12. Leveling
Airplane,
Serial
Nos.30-853,
30-902
to30-2000
incl..................................... 1B24
2-13. Minimum
Turning
Radius................................................................................................
C3
2-14. Servicing
Landing
GearStruts
.........................................................................................
C7
2-15. Service
Points,
SerialNos.
30-1to30-852
incl.and30-854
to 30-901incl................... 1C11
2-16. Service
Points,
SerialNos.30-853,
30-902
to 30-2000
inc ........................................... IC12
2-17. OilSuction
Screen
...................................................................................................... C19
2-18. OilPressure
Screen...........................................................................................................
1C19
2-19. Turbo
OilFilter.................................................................................................................
C20
2-20. Lubrication
Chart..............................................................................................................
1D2
2-21. Identification
ofAircraft
FluidLines...............................................................................
1D12
2-22. Removal
ofCherrylock
Rivets
.........................................................................................
D13
4-1. Landing
Light
Installation
................................................................................................
1E9
4-2. Aileron
and
FlapInstallation
............................................................................................
El
4-3. WingInstallation
..............................................................................................................
IE16
4-4. Empennage
Installation
...................................................................................................
E23
4-5. Windshield
Installation
.....................................................................................................
1F2
4-6. SideWindow
Installation
(Typical)
..........................................................
..................... 1F3
4-7. DoorInstallation..............................................................................................................
IF4
4-8. DoorLocking
Mechanism
................................................................................... IF5
4-9. SkinM
aterialandThickness
...........................................................................................
1F7
4-10. Typical
Access
Holes.......................................................................................................
IF10
4-10a. Checking
Stabilator
FreePlay
..........................................................................................
1F13
4-11. Balancing
Stabilator,
Serial
Nos.30-1
to 30-852
incl.,30-854
to
30-901
incl.,30-1717,
30-1745
to30-2000
inc............................................................. F15
4-12. Balancing
Stabilator,
Serial
Nos.
30-853,
30-902
to 30-1716
incl.
and30-1718
to 30-1744
incl...........................................................................................
IF15
4-13. CheckingandBalancing
Rudder
........................................................................................
F18
4-14. Surface
Scratches,
Abrasion
orGround-in-Dirt
.................................................................1F23
4-15. DeepScratches,
Shallow
Nicks
andSmall
Holes
...............................................................
IF23
PREFACE Revised:
10/1/98
1A6

PIPER TWIN COMANCHE SERVICEMANUAL
LIST OF ILLUSTRATIONS- PARTI (cont.)
Figure No. Subject Grid No.
4-16. Mixing ofEpoxy Patching Compound ............................................................... F24
4-17. Welding Repair Method...................................................................................................... F24
4-18. RepairingofCracks ............................................................................................................ IG
4-19. VariousRepairs................................................................................................................... 1G3
4-20. Repair ofStress Lines .............................................................. ....................... G4
4-21. Repair ofImpacted Damage ........................................ ....................... IG4
5-1. Control Column Installation ........................................ ....................... 1G16
5-la. Correct Method of Installing RodEnd Bearings ................................................................ 1G19
5-2. Aileron Control Installation ........................................ ....................... 1G23
5-3. Installationof Bellcrank Checking Tool ........................................ ....................... 1H3
5-4. Installationof Aileron Rigging Tool........................................... .................... 1H3
5-5. Stabilator and Stabilator Trim Controls .............................................................................. IH8
5-6. Stabilator Rigging Tool....................................................................................................... IH12
5-7. Methods of BlockingTrim Cables .................. .................................................................... IH13
5-8. Rudder Pedal Installation.................................................................................................... H20
5-9. Adjustment ofBrake Pedal ............................................................... I1H21
5-10. Rudder and Rudder Trim Controls...................................................................................... 1H23
5-11. Clamping Rudder Pedals inNeutral Position ..................................................................... 112
5-12. Determining Neutral RudderPosition ................................................................................ 113
5-13. Checking Rudder Travel..................................................................................................... 113
5-14. Trim ScrewAssembly ......................................................................................................... 1110
5-15. Flap Control Installation ...................................................................... 1120
5-16. Flap PositionSender Unit................................................................................................... 1123
5-17. FabricatedAileron Bellcrank Rigging Tool........................................................................ 1J13
5-18. FabricatedAileron Rigging Tool ........................................................................................ 1114
5-19. FabricatedStabilator RiggingTool ................................................... IJ15
APP 1-1. Control Cable Inspection Technique
................................................................................... IK2
APP 1-2. External Cable WearPatterns.............................................................................................. IK2
APP 1-3. InternalCable Wear ............................................................................................................ K3
APP 1-4. Pulley Wear
Patterns ........................................................................................................... K4
7-1. Nose GearOleo Strut Assembly ......................................................................................... 2A17
7-2. Nose LandingGear Installation.......................................................................................... 2A23
7-3. Clamping Rudder Pedals in Neutral Position ..................................................................... 2B
7-4. Rudder Pedals at Neutral Angle.......................................................................................... 2B2
7-4a. RudderPedals at Neutral PositionS/N 39-84 and up ......................................................... 2B2
7-5. Installationof Plumb Bob Attachment Tool ....................................................................... 2B4
7-6. Installationof Nose Gear Alignment Jig............................................................................. 2B4
7-7. Nose GearDoor Installation ............................................................................................... 2B5
7-8. Main GearOleo Strut Assembly......................................................................................... 3B9
7-8a. Main GearSide Brace Link Travel ..................................................................................... 2B14
7-8b. Main GearSide Brace Bearing Tolerance........................................................................... 2B14
7-8c. Main GearSide Brace Link Tolerance................................................................................ 2B 15
7-9. Main Landing Gear Installation (Left)................................................................................ 2B19
7-10. Adjustmentof Main LandingGear Drag Link.................................................................... 2B21
7-1. Aligning MainGear.................................................................................................... 2B22
Revised:10/1/98 PREFACE
1A7

PIPER TWIN COMANCHE SERVICE MANUAL
LISTOF ILLUSTRATIONS
-PART
I (cont.)
FigureNo. Subject GridNo.
7-12. LandingGear
RetractionSystem
........................................................................................
2C
7-13. LandingGear
RetractionTransmission
Assembly
.............................................................
2C4
7-14. Landing
GearRetraction
Transmission
Installation
...........................................................
2C10
7-15. Landing
Gear
Up Limit
Switch...........................................................................................
2C12
7-16. Torque
WrenchandAdapterInstallation
............................................................................
2C14
7-17. LandingGearDown
LockInstallation................................................................................
2C15
7-18. Landing
GearWarning
SwitchInstallation.........................................................................
2C16
7-19. NoseWheelAssembly
........................................................................................................
2C18
7-20. Main WheelAssembly.Serial
Nos.30-2to 30-845incl ...................................................2C19
7-21. MainWheel
Assembly.
Serial
Nos.30-846
to 30-2000
incl ............................................. 2C20
7-22. WheelBrakeAssem
bly.......................................................................................................
2C22
7-22a. Removal
andInstallation
of AnchorBolt
...........................................................................
2C23
7-23. Removal
ofWheelBrakeDisc............................................................................................
2C24
7-24. Brake
SystemInstallation
...................................................................................................
2D
7-25. BrakeMasterCylinder
Assembly
.......................................................................................
2D3
7-26. Bleeding
Brakes..................................................................................................................
2D5
7-26a. Brake
Cylinder
Installation
................................................................................................
2D5
7-27. Fabricated
PlumbBobTool..............................................................................................
2D9
7-28. Fabricated
NoseWheelAlignmentJig...............................................................................
2 10
7-29. Fabricated
Spanner
Wrench
................................................................................................
2D11
7-30. Inspection
ofRodEndBearings
.........................................................................................
2D12
7-31. Main GearWear Limits.......................................................................................................
2D14
7-32. NoseGear
WearLimits
.......................................................................................................
2D16
8-1. EngineCowling
andCowlFlapRigging
............................................................................
2D23
8-2. Standard
Propeller
Installation
............................................................................................
2E
8-3. Typical
NicksandRemoval
Methods
.................................................................................
2E4
8-4. PropellerGovernor..............................................................................................................
2E10
8-5. EngineInstallation..............................................................................................................
2E15
8-6. Schematic
Diagramof RSA
FuelInjector
System..............................................................
2E19
8-7. FuelInjector.......................................................................................................................
2E21
8-8. FuelAirBleedNozzle.........................................................................................................
2E21
8-9. M
agnetoBreaker
Points.........................................................................
...... 2........
........... 2E23
8-10. Contact
SpringInspection
...................................................................................................
2E24
8-11. Impulse
Coupling..................................................................................................... 2E24
8-12. M
agnetoTiming
Marks.......................................................................................................
2F2
8-13. Engine
Timing
Marks.........................................................................................................
2F3
8-14. Removing
Spring
FromLeadAssembly.............................................................................
2F6
8-15. Assembly
Tool
....................................................................................................................
2F7
8-16. UsingAssembly
Tool.........................................................................................................
2F7
8-17. M
easuring
Lead
Assembly
Length
.....................................................................................
2F7
8-18. CuttingM
etallicBraid
fromEnd
ofLead...........................................................................
2F8
8-19. Unbraiding
MetallicShielding............................................................................................
2F8
8-20. Form
ingShielding
Around
Ferrule
...............................................
........................ ..... 2F9
8-21. FerruleSeating
Tool...........................................................................................................
2F9
8-22. Needle .......................................................................................................................
2F9
PREFACE Revised:
10/1/98
1A8

8-23.
8-24.
8-25.
8-26.
8-27.
8A-1.
8A-2.
8A-3.
8A-4.
8A-5.
8A-6.
8A-6a.
8A-7.
8A-8.
8A-9.
8A-10.
8A-I1.
8A-12.
8A-13.
8A-14.
8A-15.
8A-16.
8A-17.
8A-18.
8A-19.
8A-20.
8A-21.
8A-22.
8A-23.
8A-24.
8A-25.
8A-26.
8A-27.
8A-28.
8A-29.
9-1.
9-2.
9-3.
9-4.
9-5.
9-6.
9-7.
9-8.
9-9.
9-10.
PIPER TWIN COMANCHE SERVICE MANUAL
LIST OF ILLUSTRATIONS-PART I (cont.)
Figure No. Grid No.
MeasuringWire From Topof Ferrule .................................................................................
Installing Grommet Over Lead Assemblies........................................................................
Lead Assembly Installed in Grommet ................................................................................
Wire Doubled Over For Installation of Eyelet....................................................................
Rem
ovingFrozen Spark Plug .............................................................................................
EngineCowling and Cow
lFlap Rigging ............................................................................
PropellerInstallation ...........................................................................................................
TypicalNicks and Rem
oval Methods .................................................................................
PropellerGovernor..............................................................................................................
EngineInstallation .............................................................................................................
SchematicDiagram of TurbochargedSystem.....................................................................
Lockwiring V-Band C
ouplings ...........................................................................................
SchematicDiagram of RSA Fuel Injector System..............................................................
Fuel Injector .......................................................................................................................
Fuel Air Bleed Nozzle.........................................................................................................
Magneto Breaker Points......................................................................................................
Contact Spring Inspection...................................................................................................
ImpulseCoupling...............................................................................................................
Magneto Timing Marks.......................................................................................................
EngineTuning Marks .........................................................................................................
RemovingSpring From Lead Assem
bly.............................................................................
Assembly Tool ....................................................................................................................
Using A
ssembly Tool..........................................................................................................
MeasuringLead Assembly Length.....................................................................................
CuttingMetallic B
raid From End of Lead..........................................................................
UnbraidingMetallic Shielding............................................................................................
Forming Shielding Around Ferrule.....................................................................................
Ferrule SeatingTool............................................................................................................
Needle .......................................................................................................................
Measuring Wire From Top of Ferrule .................................................................................
Installing Grommet OverLead Assemblies........................................................................
Lead Assembly Installed in Grommet ................................................................................
Wire Doubled Over for Installation of Eyelet.....................................................................
Removing Frozen Spark Plug.............................................................................................
Turbo Oil Flow Check.........................................................................................................
Fuel SystemSchematic (PA-30) .........................................................................................
Fuel SystemSchematic (PA-30Turbo)...............................................................................
Fuel CellInstallation (Main/Inboard) .................................................................................
Fuel Cell Installation (Auxiliary/Outboard)........................................................................
Checking Sender Unit .........................................................................................................
Checking Fuel Gauge..........................................................................................................
Fuel Indicating System Wing Schematic............................................................................
Fuel System Installation......................................................................................................
Fuel SystemInstallation (Turbo) ........................................................................................
Fuel StrainerAssembly .......................................................................................................
2F10
2F10
2F10
2F10
2F13
2G5
2G8
2G10
2G18
2G23
2H4
2H5
2H8
2HII
2HII
2H13
2H14
2H14
2H15
2H17
2H19
2H20
2H20
2H21
2H21
2H21
2H22
2H23
2H23
2H23
2H23
2H24
2H24
212
214
2124
2J1
2J4
2J5
2JII
2J11
2J14
2J15
2J17
2J20
Revised:10/1/98 PREFACE
1A9

PIPER TWIN COMANCHE SERVICEMANUAL
LIST
OFILLUSTRATIONS
-PARTI (cont.)
Figure
No. Subject GridNo.
9-11. FuelSelector
Installation....................................................................................................
222
9-12. FuelSelector
Valve
ControlInstallation
............................................................... 223
9-13. Weldon
RotaryFuelPump..................................................................................................
2K2
9-14. Solenoid
Valve. ......................................................................................... 2K6
9-15. Fabricated
FuelQuantity
Transmitter
Checking
Jig...........................................................
2K10
10-1. Instrument
Panel,SerialNos.
30-1to30-852
incl.and
30-854to 30-901incl ....................................................................................................
2K16
10-2. Instrument
Panel,SerialNos.
30-853,30-902
to 30-1716
incl.
and30-1718
to 30-1744
incl...........................................................................................
2K17
10-3. Instrument
Panel,Serial
Nos.
30-1717,30-1745
to 30-2000
incl.......................................2K18
10-3a. Securing
Pump............................................................................................ 2K24
10-4. Vacuum
SystemInstallation
................................................................................................
2L
10-5. EGT
Thermocouple
Installation..........................................................................................
2L5
11-1. Generator
WiringSystem
Schematic
............................................................ 3A15
11-2. Sectional
ViewofGenerator
..............................................................................................
3A19
11-3. Wiring
Circuit,Dual
Regulators ............................................................... 3A21
11-4. Current/Voltage
Regulator
............................................................ ....................... 3B4
11-5. UseofRifflerFiletoCleanContact
Points.......................................................................
3B7
11-6. Voltage
Regulator
AirGap..................................................................................................
3B7
11-7. Checking
Voltage
Setting
Fixed
Resistance
Method
..........................................................
3B8
11-8. Checking
Voltage
SettingVariable
Resistance
Method
......................................................
3B8
11-9. Adjusting
Voltage
Regulator
Setting...................................................................................
3B9
11-10. Cutout
RelayAirGapCheckand
Adjustment....................................................................
3BI
11-11. Cutout
RelayPointOperating
Check
andAdjustment
.......................................................
3B11
11-12. Checking
CutoutRelayClosing
Voltage
........................................ ....................... 3B12
11-13. Adjustment
ofCutout
Relay
ClosingVoltage
.....................................................................
3B12
11-14. Checking
Current
Regulator,
Load
Method........................................................................
3B13
11-15. Checking
Current
Regulator,
lumperLeadMethod
...........................................................
3B13
11-16. Checking
andAdjusting
Relay
AirGap.............................................................................
3B16
11-17. Checking
and
Adjusting
Relay
Point
Opening
...................................................................
3B16
11-18. Checking
Relay
Closing
Voltage ............................................................... 3B17
11-19. Adjusting
RelayClosing
Voltage
.......................................................................................
3B17
11-20. Alternator
Wiring
System
Schematic..................................................................................
3B19
11-21. Exploded
View
ofAlternator ............................................................... 3B21
11-22. Removal
ofRectifier...........................................................................................................
3B23
11-23. Removal
ofSlipRingEndBearing
....................................................................................
3B23
11-24. RemovalofDriveEndHead ............................................................... 3B23
11-25. Removal
ofEndHeadBearing
...........................................................................................
3B23
11-26. Testing
Rotor
forGrounds ............................................................... 3B24
11-27. Testing
Rotor
for Shorts
................................................................................
................ 3B24
11-28. Installation
ofBearing....................................................................................................
3C
11-29. Installation
ofRectifier
...................................................... ....................... 3C
11-30. Terminal
Assembly
.................................................................. 3C2
11-31. SlipRing
EndBearing
Assembly
........................................ ....................... 3C2
11-32. Testing
Alternator
........................................................... ........ 3C3
PREFACE Revised:
10/1/98
1A10