Performance Data for the Piper PA-31P Pressurized Navajo

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OPERATOR'S MANUAL Part No. SSP-1570 LYCOMING TIGO-541-E1A AIRCRAFT ENGINES FOR PIPER NAVAJO PA-31-P November, 1988 This reprinting contains all previous revisions. Lycoming 652 Oliver Street Williamsport, PA 17701 U.S.A. OPERATOR'S MANUAL Part No. SSP-1570 LYCOMING TIGO-541-E1A AIRCRAFT ENGINES FOR PIPER NAVAJO PA-31-P November, 1988 This reprinting contains all previous revisions. Lycoming 652 Oliver Street Williamsport, PA 17701 U.S.A. ATTENTION OWNERS, OPERATORS, AND MAINTENANCE PERSONNEL This operator's manual contains a description of the engine, its specifications, and detailed information on how to operate and maintain it. Such maintenance procedures that may be required in conjunction with periodic inspections are also included. This manual is intended for use by owners, pilots and maintenance personnel responsible for care of Avco Lycoming powered air- craft. Modifications and repair procedures are contained in Avco Lycoming overhaul manuals; maintenance personnel should refer to these for such procedures. SAFETY WARNING Neglecting to follow the operating instructions and to carry out periodic maintenance procedures can result in poor engine per- formance and power loss. Also, if power and speed limitations specified in this manual are exceeded, for any reason; damage to the engine and personal injury can happen. Consult your local FAA approved maintenance facility. SERVICE BULLETINS, INSTRUCTIONS, AND LETTERS Although the information contained in this manual is up-to-date at time of publication, users are urged to keep abreast of later information through Avco Lycoming Service Bulletins, Instruc- tions and Service Letters which are available from all Avco Lycoming distributors or from the factory by subscription. Con- sult the latest edition of Service Letter No. L114 for subscription information. SPECIAL NOTE The illustrations, pictures and drawings shown in this publication are typical of the subject matter they portary; in no instance are they to be interpreted as examples of any specific engine, equip- ment or part thereof. ii TABLE OF CONTENTS Page SECTION 1 DESCRIPTION 1-1 SECTION 2 SPECIFICATIONS 2-1 SECTION 3 OPERATING INSTRUCTIONS 3-1 SECTION 4 PERIODIC INSPECTIONS 4-1 SECTION 5 MAINTENANCE PROCEDURES 5-1 SECTION 6 TROUBLE-SHOOTING 6-1 SECTION 7 INSTALLATION AND STORAGE 7-1 SECTION 8 TABLES 8-1 V Figure Number 3-1 INDEX OF ILLUSTRATIONS Title Left Side View - Typical TIGO-541 Series Right Side View - Typical TIGO-541 Series Representative Effect of Leaning on Cylinder Head Temperature, TIT (Turbine Inlet Temperature), Engine Power and Specific Fuel Consumption at Constant Engine RPM and Manifold Pressure Page viii ix 3-7 3-11 3-12 3-2 Fuel Flow vs Percent Rated Power Sea Level and Altitude Performance 3-3 3-4 3-5 3-6 3-7 3-8 5-1 5-2 Engine 3200 RPM, Propeller 2133 RPM Engine 3000 RPM, Propeller 2000 RPM Engine 2750 RPM, Propeller 1833 RPM Engine 2600 RPM, Propeller 1733 RPM Engine 2400 RPM, Propeller 1600 RPM Engine 2200 RPM, Propeller 1467 RPM Ignition Wiring Diagram Open and Closed Clearance Position for Exhaust Bypass Valve 3-13 3-14 3-15 3-16 3-17 5-2 5-13 5-3 7-1 7-2 Fuel Injector and Controller Linkage Setting Right Side View - Typical TIGO-541 Series Left Side View - Typical TIGO-541 Series 5- 14 7-5 7-6 vi vii ALLAING Right Side View - Typical TIGO-541 Series Left Side View - Typical TIGO-541 Series viii WARNING SUBJECT ENGINES ARE EQUIPPED WITH A DYNA- MIC COUNTERWEIGHT SYSTEM AND MUST BE OP- ERATED ACCORDINGLY. AVOID HIGH ENGINE SPEED, LOW MANIFOLD PRESSURE OPERATION. USE A SMOOTH, STEADY MOVEMENT OF THE THROTTLE (AVOID RAPID OPENING OR CLOSING). IF THIS WARNING IS NOT HEEDED, THERE MAY BE SEVERE DAMAGE TO THE COUNTERWEIGHTS, ROLLERS AND BUSHINGS. ix DESCRIPTION Page 1-1 1-1 1-1 1-2 . 1-2 1-2 1-2 General . Cylinders Valve Operating Mechanism Crankshaft . Crankcase Oil Sump. Pistons Connecting Rods Gears Cooling System Lubrication System Induction System . Turbocharger System . 1-2 . 1-2 • 1-2 1-2 1-3 • 1-3 Description SECTION TIGO-541 SERIES SECTION 1 SECTION 1 DESCRIPTION General The Avco Lycoming TIGO-541 series aircraft engines are six cylinder, reduction gear driven, horizontally opposed, wet sump, fuel injected, turbocharged, air cooled models. Ac- cessories are side mounted and piston cooling oil jets are incor- porated in the power section. The integral crankcase forms the housings for the reduction gear, power section and accessory drives. In referring to the location of the various engine components, the parts are described in their relationship to the engine as in- stalled in the airframe. Thus the power take-off section is con- sidered the front and the sump section the bottom. Reference to the left and right sides are made with the observer facing the rear of the engine. Thus the front cylinder on the left bank is number 1 and the rear cylinder number 5. The front cylinder on the right bank is number 2 and the rear cylinder is number 6. The direction of rotation for accessory drives is determined with the observer facing the accessory mounting pad. Cylinders The cylinders are of conventional air cooled con- struction with the two major parts, head and barrel, screwed and shrunk together. The heads are made from an aluminum alloy casting with a fully machined combustion chamber. Rocker shaft bearing supports are cast integral with the head along with hous- ings to form the rocker boxes for both valve rockers. The cyl- inder barrels, which are machined from chrome-nickel molybde- num steel forgings, have deep integral cooling fins and the inside of the barrels are ground and honed to a specified finish. New engines are furnished with nitride hardened cylinder barrels. - Valve Operating Mechanism A conventional type camshaft is located parallel to and below the crankshaft and operates in alu- minum bearings. The camshaft actuates the valves by means of hydraulic lifters and push rods, which automatically keep the