1965–1986 Piper Cherokee Six PA-32-260/PA-32-300/PA-32R-300 Aircraft Service Manual (P/N 753 690)

Piper Aircraft Corporation’s service manual, P/N 753 690, covers the 1965–1986 Cherokee Six PA-32-260, PA-32-300, and PA-32R-300. It combines airframe maintenance, system troubleshooting, and component repair instructions, with a November 1983 revision baseline and interim inspection changes effective through May 6, 1987.

• Airframe repair: Wing and empennage removal, skin-material drawings, thermoplastic and fiberglass repairs, and control-surface balancing.

• Flight controls: Control-cable replacement, aileron and stabilator rigging, rudder and flap adjustment, trim servicing, and fabricated rigging-tool drawings.

• Landing gear: Fixed-gear oleo disassembly and inspection, retractable-gear alignment, service-tolerance tables, and limit-switch and warning-switch adjustment.

• Hydraulics and brakes: Hydraulic pump and actuator repair, gear back-up extender testing, brake-cylinder servicing, gravity and pressure bleeding, and leak checks.

• Powerplant and ignition: Engine and propeller removal and installation, governor adjustment, carburetor and fuel-injector maintenance, and internal magneto timing.

• Electrical diagnosis: Chrysler and Prestolite alternator testing and repair, Delco-Remy and Prestolite starter servicing, and model- and serial-specific wiring schematics.

• Cabin systems: Heater inspection, overhead vent-blower disassembly, and air-conditioning troubleshooting, leak detection, evacuation, and charging procedures.

The manual specifies qualified personnel for its procedures and is suited to aircraft maintenance technicians familiar with airframe servicing and system testing.

Airframe Inspection and Control Rigging

Separate inspection reports cover fixed-gear and retractable-gear aircraft. Exhaust-system inspections, main-gear torque-link checks, and seat-belt attachment inspections supplement the routine inspection schedules.

Wing-installation and skin-material drawings distinguish earlier aircraft from the later PA-32-300 configuration. Station Reference Lines and lubrication charts support component location and servicing. Control-surface balance specifications accompany drawings for fabricating aileron, flap, stabilator, and rudder rigging tools.

Retractable Gear, Hydraulics, and Brake Repair

The PA-32R-300 hydraulic section covers pump disassembly, inspection, reassembly, pressure testing, and adjustment. The Schematic Diagram of Hydraulic System and Hydraulic Pump/Reservoir, Exploded View show the circuit and component arrangement. Nose-gear actuator instructions distinguish Syncro Devices and Gar-Kenyon assemblies.

Brake coverage extends to wheel-brake inspection, hand/parking-brake and toe-brake cylinders, bleeding after component replacement, and system leak checks. Oleo servicing includes fluid replenishment and strut inflation.

The exhaust inspection notes explain how a misplaced muffler shroud can shift and interfere with full nose-gear extension on the retractable model. A separate actuator-removal caution identifies the risk of downlock damage during manual nose-gear retraction.

Powerplant, Fuel Delivery, and Instruments

Separate powerplant sections distinguish the Marvel-Schebler MA-4-5 carburetor installation from Bendix RSA-10ED1 fuel injection. The Schematic Diagram of RSA Fuel Injection System accompanies injector, strainer, idle-mixture, and fuel-air bleed-nozzle servicing.

Propeller coverage includes fixed-pitch and constant-speed installations, blade-track checks, and governor rigging. The manual refers major internal constant-speed propeller repairs to Hartzell service facilities.

Fuel-system instructions cover tank removal, selector-valve and filter servicing, electric pumps, and installed sender/gauge checks. The later PA-32-300 fuel arrangement is treated alongside the retractable model’s system.

Instrument troubleshooting includes vacuum pumps and regulators, gyro instruments, and engine gauges. General airframe nut-torque tables distinguish fine and coarse threads; engine-part torque data is referred to separate Lycoming publications.

Charging Systems, Avionics, and Cabin Equipment

Alternator procedures include rectifier, stator, and rotor checks, bearing replacement, and bench testing. The serial-numbered Electrical System Schematic index helps mechanics select the applicable charging, starting, fuel-pump, or landing-gear circuit before tracing a fault.

Electronics coverage includes ELT battery replacement and operational checks, plus RCA Weather Scout radar-antenna removal and installation. Autopilot and flight-director mechanical servicing requires the applicable equipment manufacturer’s separate service literature.

Heating and ventilation instructions address the cabin heater, defroster, and optional overhead blower. Air Conditioning Wiring Schematics support the refrigeration troubleshooting charts and component-replacement procedures. Compressor internal servicing is assigned to a qualified shop; field maintenance is limited to the drive belt and magnetic clutch.

Critical aircraft maintenance should be performed or supervised by a certified aviation mechanic.

A Preview of Hydraulic Cutoffs and Brake Wear Limits

These examples are a small selection of the component specifications provided in the manual.

For the PA-32R-300 hydraulic system, Table VA-I lists pressure-switch opening, or OFF, settings of 1,800 ± 100 psi for pump 105476A and 1,400 ± 100 psi for pump HYC5005.

The wheel-brake inspection criteria call for riveted lining replacement when any segment is below 0.100 inch thick or shows uneven wear.

PDF Search, Bookmarks, and Diagram Detail

Search and drawing readability: An OCR text layer supports searches across the written sections, with recognition errors and gaps in drawing labels. Embedded bookmarks cover chapters and individual procedures. Small wiring identifiers require zooming, and some labels and fine lines remain faint or incomplete at higher magnification.

Delivered as one printable, 721-page PDF containing a single service manual in its original three-card arrangement. The total already includes three card title pages, revision records and indexes, and 35 intentionally blank placeholder pages.