Piper Seneca II PA-34-200T Service Manual, 1975-1981
Piper Models Covered & Key Technical Specifications
Models: Piper Seneca II PA-34-200T
Sub-models / Variants: 6-place (optional 7-place), twin-engine, low-wing monoplane, retractable tricycle landing gear, turbocharged engines
Model Years: 1975–1981
Serial Numbers: PA-34-7570001 and up
Technical Data:
- Engine: Two Teledyne Continental 6-cylinder, direct drive, wet sump, horizontally opposed turbocharged engines (TSIO-360E-1A, TSIO-360-EB, LTSIO-360E-1A, LTSIO-360-EB)
- Rated Horsepower: 200 HP at 2575 RPM
- Fuel Capacity: 98 U.S. gallons standard (128 U.S. gallons with optional tanks)
- Hydraulic Fluid Type: MIL-H-5606
- Hydraulic System Pressure: 2000–2500 psi
- Oil Sump Capacity: 8 U.S. quarts
- Tire Pressure (Main): 55 psi (at gross weight), 46 psi (with heavy-duty options)
- Tire Pressure (Nose): 31 psi (at gross weight), 34 psi (with heavy-duty options)
- Fuselage Length: 28 ft. 7.5 in.
Piper Manual Features & Content Preview
- Covers 1975–1981 Piper Seneca II PA-34-200T aircraft, including the six-place twin-engine airframe and turbocharged powerplant configuration
- Official 675-page Piper OEM publication P/N 761 590, revised as of February 1997
- Contains 121 exploded-view illustrations, 42 maintenance-specific tables, and complete system wiring diagrams for electrical and deicing components
- This 1979 reissued manual serves as the factory reference standard for the PA-34-200T series build, documenting the transition to improved service specifications and updated component serial ranges
Structural and System Documentation
This reference material breaks down the structural maintenance, ground handling, and operational inspection protocols for the Piper Seneca II. You get a complete look at the disassembly and installation of primary components. This includes wing panels, empennage surfaces, landing gear assemblies, and the powerplant units themselves. When working on aviation equipment, always verify airframe integrity and ensure system depressurization before beginning any component removal to maintain a safe shop environment. Service topics range from main and nose gear lubrication charts to detailed rigging procedures for ailerons, flaps, and the rudder. Technical data is structured to help mechanics navigate fuel, hydraulic, and electrical system maintenance efficiently.
Specification Highlights
Engine specifications detail the Teledyne Continental TSIO-360 series. Service data highlights magneto timing set at 20° BTC alongside exact firing orders for both left and right engines. The hydraulic systems run on MIL-H-5606 fluid. You will find documented reservoir levels and component service limits, such as the main gear oleo struts at 3.60 ±.25 inches of extension. Cylinder head bolt torque values are mapped out in a specific multi-stage sequence. Flare fitting torque requirements get their own dedicated table covering both aluminum and steel tubing. While coolant system capacity does not apply to these air-cooled engines, oil sump capacity is confirmed at 8 U.S. quarts. Electrical bonding reference values and cable tensions provide the necessary baseline data to maintain airframe integrity during routine inspections.
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