Piper Apache PA-23-150 PA-23-160 Airplane Service Manual 752-422 – PDF

Description

Piper Apache PA-23-150 & PA-23-160 Airplane Service Manual – Part Number 752-422

The Piper Apache PA-23-150 and PA-23-160 Airplane Service Manual is a comprehensive maintenance and service guide for the twin-engine Apache, covering all major airframe and powerplant systems across 13 sections. Published by Piper Aircraft Corporation under part number 752-422 and revised October 5, 1999, this manual provides the procedures, specifications, and illustrations needed to service, troubleshoot, and repair the PA-23-150 and PA-23-160 airframes.

File Details

• Manual Type: Airplane Service Manual
• Manufacturer: Piper Aircraft Corporation
• Models Covered: Apache PA-23-150, Apache PA-23-160
• Part Number: 752-422
• Revision: 7th Revision, October 5, 1999
• Original Issue: March 15, 1968 (reissued from earlier editions)
• Language: English
• Page Count: Approximately 454 pages
• File Format: PDF
• Cards: Card 1 of 2 and Card 2 of 2 (Aerofiche format)

Chapters Covered

• I. Introduction – General description, fuselage, wing, empennage, flight controls, hydraulic system, landing gear, engines, propellers, fuel system, instruments, electronic equipment, heating and ventilating system
• II. Handling and Servicing – Dimensions, station reference lines, weight and balance, serial number plate, access and inspection provisions, tools and test equipment, torque requirements, ground handling, jacking, weighing, leveling, mooring, parking, towing, taxiing, external power, cleaning, servicing
• III. Inspection – Recommended lubricants, inspection periods, inspection requirements, preflight check, overlimits inspection, fuel selector control cable inspection, control cable inspection
• IV. Structures – Removal and installation of wing assembly, wing tip, wing flaps, aileron, wing, empennage, rudder, elevators, fin, stabilizer, fuselage components, structural repairs, fiberglass repairs, thermoplastic repairs, safety walk repair
• V. Surface Controls – Standard procedures, removal and installation of aileron controls, elevator controls, rudder controls, tail trim mechanism, indicator wires, rigging and adjustment of ailerons, rudder, rudder trim mechanism, elevator, elevator trim mechanism, flaps
• VI. Hydraulic System – Principles of operation, selector lever operation, troubleshooting, corrective maintenance, removal and installation of hydraulic lines, actuating cylinders, hydraulic powerpak, disassembly and reassembly, adjustments and tests, emergency gear extension system
• VII. Landing Gear and Brake System – Landing gear system, removal and installation, oleo strut removal, adjustments, nose gear alignment, main gear alignment, adjusting main gear doors, down locks, gear limit switches, anti-retraction valve, brake system, Goodrich brake and wheel maintenance, Cleveland brake and wheel maintenance
• VIII. Power Plant – General, standard practices, removal, propeller removal, engine removal, removing the engine mount, installation, propeller installation, adjustments, adjusting the Woodward propeller governor, carburetor idle mixture, engine idling speed, Hartzell propeller governor, removal of frozen spark plug
• IX. Fuel System – General, removal and installation, main fuel system, auxiliary fuel system, fuel cells, storage, repair of fuel cell, pre-installation inspection and handling, installation, adjusting the fuel shut-off valves, checking the fuel shut-off valves, cleaning fuel filter bowl and screen, cleaning electric fuel pump screen
• X. Instruments – General, non-electrical instruments, vacuum system, suction gauge, vacuum test selector valve, vacuum relief and regulator valves, vacuum pumps, directional gyro, gyro horizon, rate of climb indicator, sensitive altimeter, airspeed indicator, magnetic compass, dual manifold pressure gauge, tachometer indicator, engine oil pressure gauge, fuel pressure gauge, turn and bank indicator, fuel quantity indicator, oil temperature indicators, carburetor air temperature indicator, ammeter, flap position indicator, removal and replacement of face mounted instruments, installation of air-driven gyro, removal and replacement of cluster mounted instruments
• XI. Electrical System – Introduction, description, troubleshooting, generator system, generator paralleling system, checking generator system, adjustments, tests and maintenance, test and maintenance of generator, inspection, shunt generator output, checking defective generators, disassembly, repair and reassembly, field coil removal, inspection and repair of parts, field coil service, armature service, polarizing generator, generator service test specifications, regulator, cutout relay, voltage regulator, current regulator, resistances, temperature compensation, regulator polarity, regulator maintenance, cleaning contact points, regulator checks and adjustments, repairs, paralleling relay, cranking motor, battery
• XII. Electronics – AutoPilot service and maintenance information, radio service and maintenance
• XIII. Heating and Ventilating – Introduction, description, troubleshooting, heater (South Wind Model 979-B1), heater operational instructions, description and principles of operation, combustion air blower, heat exchanger, ventilating air fan, heater operation, removal and installation, inspection and testing, test procedures, circuit analyzer, test stand, disassembly of heater, inspection and cleaning, reassembly, service tools, heater (South Wind Model 940 Series)

This Piper Apache service manual covers every major system on the PA-23-150 and PA-23-160 airframes, from the tubular steel fuselage structure and full cantilever wing through the hydraulic landing gear and flap systems, Lycoming O-320 powerplants, Hartzell constant-speed propellers, fuel cells, instrument and vacuum systems, 12-volt electrical system with generator and regulator, and the South Wind cabin heater. Each section provides troubleshooting tables, removal and installation procedures, adjustment specifications, and detailed illustrations including exploded views, schematics, and rigging diagrams.

What This Manual Helps You Do

The Piper Apache PA-23-150 and PA-23-160 Airplane Service Manual supports a wide range of maintenance and repair tasks. Technicians can troubleshoot hydraulic system failures using the Powerpak troubleshooting tables and flow diagrams. Landing gear rigging, oleo strut servicing, brake bleeding, and wheel alignment procedures are covered with step-by-step instructions and adjustment limits. Engine removal and installation, propeller governor adjustment, and fuel system servicing are documented with torque values and clearances. The inspection section provides a complete inspection report checklist with intervals at 50, 100, 500, and 1000 hours, covering the propeller group, engine group, cabin group, fuselage and empennage group, wing group, landing gear group, operational inspection, and general requirements.

Wiring diagrams for single and dual generator systems, hydraulic schematics, control cable rigging diagrams, and exploded parts views for the hydraulic Powerpak and oleo struts give you the visual reference needed to understand how components fit together and operate. The manual also includes conversion tables for inches to millimeters and Centigrade to Fahrenheit, thread lubricant specifications, flare fitting torques, and recommended nut torques.

Systems and Components Covered

• Fuselage – truss and semi-monocoque construction, tubular steel frame
• Wing – all-metal stressed skin, full cantilever, removable wing tips
• Empennage – vertical stabilizer, rudder with trim tab, horizontal stabilizer, elevator
• Flight controls – dual control wheels, rudder pedals, cable and push-pull tube systems
• Hydraulic system – Powerpak, landing gear and flap actuation, hand pump, emergency CO2 extension
• Landing gear – tricycle retractable, air-oil oleo struts, down locks, drag links, gear doors
• Brakes – Goodrich expander tube and Cleveland disc brakes
• Engines – Lycoming O-320 series (150 HP) and O-320-B series (160 HP)
• Propellers – Hartzell constant speed, full feathering, HC-82XG, HC-82XL, HC-A2XL
• Fuel system – main and auxiliary rubber-type cells, electric and engine-driven pumps, crossfeed
• Instruments – vacuum system, gyro instruments, altimeter, airspeed, tachometer, gauges
• Electrical – 12-volt DC, generator, regulator, cranking motor, battery
• Heating and ventilating – South Wind Model 979-B1 and 940 Series heaters

Why This Manual Matters

Correct procedures and specifications are critical when servicing the Piper Apache. The PA-23-150 and PA-23-160 share many systems but differ in engine compression ratio, fuel octane requirements, and some serial-number-dependent configurations. This manual identifies serial number ranges where servicing differences occur, so you can be sure the procedure you are following applies to the specific aircraft. Torque values, cable tensions, clearances, and adjustment limits are provided for each system, helping to prevent damage from overtorque or incorrect rigging. Troubleshooting tables list probable causes and remedies for hydraulic, engine, fuel, electrical, and heater problems, saving diagnostic time.

Whether you are performing a 100-hour inspection, rigging flight controls, servicing oleo struts, replacing a generator, or overhauling a South Wind heater, the Piper Apache service manual provides the manufacturer’s procedures and specifications in a single document.

Get Instant Access

IMAGES PREVIEW

The Piper Apache PA-23-150 and PA-23-160 Airplane Service Manual is delivered as an instant PDF download after payment. No shipping, no waiting. The file can be viewed on any device – computer, tablet, or smartphone – and printed pages can be taken to the shop or hangar. This manual is an essential reference for any owner, mechanic, or shop maintaining or restoring a Piper Apache PA-23-150 or PA-23-160.