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Piper Apache PA-23 Aircraft Airplane Service Repair Manual
AIRPLANE SERVICE MANUAL
APACHE
PA-23-150
PA-23-160
REVISED: OCT. 5, 1999
PIPER APACHE SERVICE MANUAL
LIST OF TABLES
Figure No. Subject Grid No.
II-I. Leading Particulars and Principal Dimensions (PA-23-150)........ 1A20
II-Ia. Leading Particulars and Principal Dimensions (PA-23-160)........ 1B2
II-II. Recommended Nut Torques (Inch-Pounds) ......... 1B14
II-III. Flare Fitting Torques .............. 1B16
II-IIIa. Recommended Lubricating Oils............... 1C16
II-IV. Thread Lubricants................... 1C18
II-V. Maximum Distance Between Supports for Fluid Tubing....... 1C18
II-VI Conversion Tables .................. 1C21
II-VII. Decimal/ Millimeter Equivalents of Drill Sizes ......... 1C24
II-VIII. Hose Clamp Tightening................ ID2
III-I. Inspection Report ................... 1D13
IV-I. List of Materials (Thermoplastic Repair) ............. 1Fl
VI-I. Leading Particulars - Hydraulic Powerpak........... 1G16
VI-III. Hydraulic System Troubleshooting .......... 1G24
VI-III. Powerpak Troubleshooting................. 1H7
VI-IV. Special Tools and Test Equipment............ 1H24
VIII-I. Engine Troubleshooting ............... 1J12
IX-I. Fuel System Troubleshooting............. 1L1
X-I. Vacuum System ................ 2A16
X-II. Directional Gyro Indicator ................. 2A22
X-III. Gyro Horizon Indicator ................ 2A23
X-IV. Rate of Climb Indicator ................ 2A24
X-V. Altimeter..................... 2B1
X-VI. Airspeed Tubes and Indicator............. 2B3
X-VII. Magnetic Compass ................. 2B4
X-VIII. Manifold Pressure Indicator ............... 2B5
X-IX. Tachometer ................. 2B6
X-X. Engine Oil Pressure Gauge................. 2B7
X-XI. Fuel Pressure Gauge ............... 2B8
X-XII. Turn and Bank Indicator............... 2B9
X-XIII. Fuel Quantity Indicators ............... 2B10
X-XIV. Oil Temperature Indicators................. 2B11
X-XV. Carburetor Air Temperature Indicator............ 2B12
X-XVI. Flap Position Indicator ................. 2B13
XI-I. Electrical System Troubleshooting........... 2D8
XI-II. Electrical Wire Coding ................. 2D19
XIII-I. Troubleshooting Analysis Chart, Model 979-B1 ....... 2D19
XIII-II. Troubleshooting Chart (Heater, 940 Series) ......... 2H24
PIPER APACHE SERVICE MANUAL
LIST OF ILLUSTRATIONS
Figure No. Subject Grid No.
2-1. Three-View of Apache PA-23-150 / l60, Serial Nos. 23-1 to 23-l870 incl.
2-2. Three-View of Apache PA-23-160, Serial Nos. 23-1871 and up
2-3. Station Reference Lines
2-4. Station Reference Lines.
2-5. Access and Inspection Provisions
2-6. Access and Inspection Provisions
2-6b. Torque Wrench Formula.
2-7. Jacking Arrangement
2-8. Weighing
2-9. Longitudinal Leveling .
2-10. Lateral Leveling.
2-11. Service Points .
2-12. Servicing Landing Gear Oleo Struts.
2-13. Fuel Screen Bowl.
2-14. Oil Pressure Screen.
2- l5. Oil Suction Screen
2-16. Lubrication Chart
2-17. Identification of Aircraft Fluid Lines
2-17. Cherrylock Rivet Removal.
2-19. Flareless Tube Fittings
3-1. Fuel Selector Valve Control Cables
4-1. Door Lock Installation
4-2. Landing Light Installation, Serial Nos. 23-1 to 23-1163 incl
4-3. Landing Light Installation, Serial Nos. 23-1164 and up
4-4. Front Spar Attaching Members
4-5. Empennage Skin Diagram
4-6. Fuselage Skin Diagram
4-7. Wing Skin Diagram .
4-8. Nacelle Skin Diagram.
4-9. Surface Scratches Abrasions or Ground in Dirt
4-10. Deep Scratches Shallow Nicks and Small Holes
4-11. Mixing of Epoxy Patching Compound
4-12. Welding Repair Method
4-13. Repairing of Cracks
4-14. Various Repairs
4-15. Repair of Stress Lines
4-16. Repair of Impacted Damage
5-l. Aileron Control Installation.
5-2. Elevator Control Installation .
5-3. Rudder Control Installation
5-4. Tail Trim Mechanism Installation
5-5. Fabricated Aileron Bellcrank Special Tool
5-6. Aileron Adjustment Points
5-7. Checking Neutral Position of Rudder
5-8. Nose Wheel Aligning
5-9. Installing Elevator Trim Drum Cable Locking Pin .. 1G3
5-10. Wrapping Elevator Trim Drum Cable ... 1G4
5-11. Wrapping Rudder Trim Drum Cable... 1G5
5-12. Wrapped Rudder Trim Drum Cable ... 1G6
5-13. Installing the Forward Rudder Trim Tab Screw Collar Cotter Pin. 1G8
5-14. Flap Alignment.... 1G10
5-15. Adjusting Flap Control Rod End Bearing .. 1G11
5-16. Correct Method of Installing Rod End Bearings.. 1G13
6-1. Schematic Diagram, Hydraulic System.. 1G17
6-2. Flow Diagram Landing Gear Selector Lever “UP”.. 1G20
6-3. Flow Diagram Landing Gear Selector Lever “DOWN”.. 1G21
6-4. Flow Diagram Wing Flap Selector Lever “DOWN”.. 1G22
6-5. Flow Diagram Wing Flap Selector Lever “UP” .. 1G2
6-6. Flow Diagram Both Selector Levers Neutral .. 1H4
6-7. Hydraulic Powerpak, Exploded View... 1H11
6-7. Hydraulic Powerpak, Exploded View (cont.) .. 1H12
6-8. Hydraulic System .... 1I1
7-1. Landing Gear Installation, Serial Nos. 23-1 to 23-1837 incl .. 1I7
7-2. Landing Gear Installation, Serial Nos. 23-l838 and up .. 1I8
7-3. Landing Gear Drag Link (Fabricated Type) .. 1I10
7-4. Landing Gear Drag Link (Forged Type) ... 1I11
7-5. Oleo Strut, Exploded View of Internal Parts .. 1I12
7-6. Main Gear Attaching Detail ... 1I14
7-7. Checking Wheel Alignment ... 1I15
7-8. Adjusting Landing Gear Limit Switches... 1I19
7-9. Anti-Retraction Valve.... 1I21
7-10. Inspection and Replacement of Cleveland Brake Linings.. 1I24
7-11. Bleeding the Brake .... 1J2
7-12. Replacing Cleveland Brake Disc When Installed With Rivets. 1J3
7-13. Cleveland Brake Disc Minimum Thickness.. 1J4
7-14. Adjusting the Goodrich Brake... 1J5
8-1. Hartzell Propeller.... 1J20
8-2. Rear View of Engine Prior to Installation .. 1J21
8-3. Bottom Right View of Engine ... 1J22
8-4. Lord Mount, Exploded View... 1J23
8-5. Installing the Engine ... 1J24
8-6. Engine Lord Mount Locating Pin Diagram.. 1K1
8-7. Woodward Propeller Governor Adjustment Points .. 1K7
8-8. Removing Spark Plug Frozen to Bushing .. 1K11
9-1. Main Fuel System.... 1K15
9-2. Auxiliary Fuel System... 1K18
9-3. Parallel Relation of the Fuel Valve Control and Auxiliary Fuel
Valve Arm Assemblies in the “OFF” Position .. 1K23
9-4. Checking Recommended Clearance Between Valve Arm and
Valve in the”ON” Position... 1K24
9-5. Fuel Selector Control Box ... 1L3
9-6. Fuel Strainer Bowl...... 1L4
10-1. Instrument Panel....... 2A15
10-2. Instrument Panel....... 2A18
10-3. Dual Vacuum System ..... 2A19
11-1. Generator Wiring System Schematic (Single).. 2B19
11-2. Generator Wiring System Schematic (Dual) .. 2B20
11-3. Sectional View of Generator... 2B24
11-4. Wiring Circuit, Single Regulator....... 2C2
11-5. Wiring Circuit, Dual Regulators....... 2C2
11-6. Current-Voltage Regulator... 2C9
11-7. Use of Riffler File to Clean Contact Points... 2C12
11-8. Voltage Regulator Air Gap ... 2C12
11-9. Checking Voltage Setting Fixed Resistance Method..... 2C13
11-10. Checking Voltage Setting Variable Resistance Method .... 2C13
11-11. Adjusting Voltage Regulator Setting ..... 2C14
11-12. Cutout Relay Air Gap Check and Adjustment .. 2C16
11-13. Cutout Relay Point Opening Check and Adjustment ..... 2C16
11-14. Checking Cutout Relay Closing Voltage .... 2C17
11-15. Adjustment of Cutout Relay Closing Voltage .. 2C17
11-16. Checking Current Regulator, Load Method ... 2C18
11-17. Checking Current Regulator, Jumper Lead Method...... 2C18
11-18. Checking and Adjusting Relay Air Gap.... 2C21
11-19. Checking and Adjusting Relay Point Opening.. 2C21
11-20. Checking Relay Closiing Voltage....... 2C22
11-21. Adjusting Relay Closing Voltage ....... 2C22
11-22. No-Load Test Hookup ..... 2D1
11-23. Lock-Torque Test Hookup... 2D2
11-24. Resistance Test Hookup .... 2D2
11-25. Electrical System Schematic (Basic), Serial Nos. 23-1 to 23-746 incl. .... 2D21
11-26. Electrical System Schematic (Complete), Serial Nos. 23-1 to 23-746 incl. .. 2D23
11-27. Electrical System Schematic (Basic), Serial Nos. 23-747 to 23-1688 incl. .. 2E1
11-28. Electrical System Schematic (Complete), Serial Nos. 23-747 to 23-l683 incl. . 2E3
11-29. Electrical System Schematic (Basic), Serial Nos. 23-1684 and up ...... 2E5
11-30. Electrical System Schematic (Complete), Early Models ... 2E7
11-31. Electrical System Schematic (Complete), Late Models .... 2E9
13-1. Heating and Ventilating System, Serial Nos. 23-1 to 23-170 incl. ...... 2E17
13-2. Heating and Ventilating System, Serial Nos. 23-171 to 23-375 incl..... 2E18
13-3. Heating and Ventilating System, Serial Nos 23-376 to 23-746 incl. ..... 2E19
13-4. Heating and Ventilating System, Serial Nos. 23-747 to 23-1501 incl. .... 2E20
13-5. Heating and Ventilating System, Serial Nos. 23-1502 and up .. 2E21
13-6. South Wind Heater - Model 979-B1...... 2E23
13-7. Safety Valve ......... 2E24
13-8. Fuel Control Valve...... 2E24
13-9. Combustion Air Blower.... 2F2
13-10. Ventilating Air Fan. ................ 2F2
13-11. Heater Wiring Diagram - Model 979-B1 ............. 2F3
13-12. Circuit Analyzer ............... 2F6
13-13. Circuit Analyzer Electrical Circuit .......... 2F6
13-14. Heater Test Stand.............. 2F7
13-15. Test Stand Accessories ................ 2F7
13-l6. Test Stand Conversion Kit ............ 2F8
13-17. Circuit Analyzer Installation ............. 2F8
13-18. Test Stand Installation ................. 2F13
13-19. Test Stand Electrical Circuit ............... 2F15
13-20. High Heat Fuel Flow Check ............... 2F18
13-21. Combustion Air Blower Check ................ 2F20
13-22. Ventilating Air Blower Check ........... 2F20
13-23. Exploded Parts View, Model 979-B1 Heater ............. 2F24
13-24. Service Tools (South Wind)................ 2G7
13-25. Fuel Control Valve (Cutaway View)............... 2G9
13-26. Flow System (South Wind Heater)........... 2G10
13-27. Fuel Safety Valve (Cutaway View)........... 2G11
13-28. Heater Wiring Diagram - Models 940-B and 940-B12 .......... 2G15
13-29. Heater Wiring Diagram - Models 940-D, 940-DA, and 940-D12...... 2G16
13-30. Flame Detector Switch (Cutaway View) ............. 2G23
13-31. Exploded Parts View, Heater Assembly .............. 2H6
13-32. Exploded Parts View, Ventilating Air Blower Assembly ...... 2H8
13-33. Ventilating Air Blower Motor ........... 2H11
13-34. Combustion Air Blower Motor........... 2H12
13-35. Detail of Exhaust Extensions Installation............. 2H17
13-36. Fuel Flow Test Set-Up.................. 2H19
13-37. Heater Fuel Filter ................... 2H21
13-38. Heater Fuel Valve ................... 2H22
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