TABLE OF CONTENTS TITLE TABLE OF CONTENTS INTRODUCTION ENGINE M-14P DESCRIPTION AND OPERATION Description Operation Appendices: Fuel and Lubricants TROUBLE SHOOTING MAINTENANCE PRACTICES List of Task Cards Operation Procedure REMOVAL/INSTALLATION List of Task Cards Operation Procedure STORAGE INSTRUCTIONS ENGINE FRONT DESCRIPTION AND OPERATION General Construction CRANK MECHANISM ASSEMBLY DESCRIPTION AND OPERATION General Construction CYLINDER ASSEMBLY DESCRIPTION AND OPERATION General Construction TROUBLE SHOOTING SUPERCHARGING DESCRIPTION AND OPERATION General Construction LUBRICATION DESCRIPTION AND OPERATION General Description Lubrication System Units TROUBLE SHOOTING MAINTENANCE PRACTICES List of Task Cards Operation Procedure ACCESSORY DRIVES DESCRIPTION AND OPERATION General Description TROUBLE SHOOTING FUEL SYSTEM DESCRIPTION AND OPERATION General Description FUEL PUMP 702ML DESCRIPTION AND OPERATION General Description Operation TROUBLE SHOOTING MAINTENANCE PRACTICES List of Task Cards Operation Procedure FILTER 8D2.966.064 DESCRIPTION AND OPERATION General Description Operation MAINTENANCE PRACTICES List of Task Cards Operation Procedure CARBURETOR AK-14P DESCRIPTION AND OPERATION General Description TROUBLE SHOOTING MAINTENANCE PRACTICES List of Task Cards Operation Procedure IGNITION SYSTEM DESCRIPTION AND OPERATION General Description MAGNETO M-9F DESCRIPTION AND OPERATION General Description TROUBLE SHUOTIMG MAINTENANCE PRACTICES List of Task Cards Operation Procedure STORAGE INSTRUCTIONS SHIPMENT SPARK DISTRIBUTION DESCRIPTION AND OPERATION General IGNITION HARNESS DESCRIPTION AND OPERATION SPARK PLUG SD-49SMM DESCRIPTION AND OPERATION General Description TROUBLE SHOOTING MAINTENANCE PRACTICES List of Task Cards Operation Procedure STARTING SYSTEM DESCRIPTION AND OPERATION General Airborne Air Compressor AK-50A TROUBLE SHOOTING MAINTENANCE PRACTICES List of Task Cards Operation Procedure SPINNING SYSTEM DESCRIPTION AND OPERATION General Construction TROUBLE SHOOTING MAINTENANCE PRACTICES List of Task Cards Operation Procedure ELECTRICAL POWER SYSTEM DC ELECTRICAL POWER SYSTEM GENERATOR GSR-3000M, SERIES 4 DESCRIPTION AND OPERATION General Description Operation TROUBLE SHOOTING MAINTENANCE PRACTICES List of Task Cards Operation Procedure CONTROL CONSTANT SPEED GOVERNOR R-2, SERIES 04 DESCRIPTION AND OPERATION General Description Operation MAINTENANCE PRACTICES List of Task Cards Operation Procedure STORAGE INSTRUCTIONS Storage Preservation SHIPMENT INTRODUCTION The M-14P engine Maintenance Manual is a one-book publication comprising description and operating instructions, including data on the construction, purpose, arrangement and. operating principle of engine systems (Ref. 073.00.00, 074.00.00, 080.00.00), as well as all the information necessary for proper operation, storage and maintenance of the engine. The present Manual includes Maintenance Manuals of some accessories installed on the engine (Ref. 024.30.01, 061.20.01). The text uses the following abbreviations and symbols of technical values: BDC (HMT) - bottom dead center. TDC (SKIT) - top dead center. POL (K!M) - petrol, oil, lubricants. PP (BMT) - powerplant. Pc - excessive pressure (or rarefaction) behind engine blower, mm Hg. E - compression ratio, which is ratio of cylinder total volume to volume of combustion chamber. Ner - reduced engine power, i.e. power reduced to standard atmospheric conditions (Pa= 760 mm Hg, t = 20 °C). Pa - atmospheric pressure, mm Hg. "Front view" implies that the observer is in front of the airscrew shaft of the engine assembly. "Rear view" implies that the observer is at the rear cover of the engine. "RH rotation" implies that the direction of rotation of the part coincides with that of clock hands for the observer staying behind the engine. "LH rotation" implies that the direction of rotation is opposite to that of clock hands for the observer staying behind the engine. "Left" and "right" relate to the observer staying in the pilot's cabin behind the engine. 17 ENGINE M-14P - DESCRIPTION AND OPERATION 1. DESCRIPTION 1.1. GENERAL The M-14P airplane engine (Ref., Figs 1 and 2) is a piston, fourstroke, air-cooled gasoline, nine-cylinder carburetor, single-row radial engine. The M-14P engine is not of a high-altitude type, but to improve performance it is provided with one-speed centrifugal blower. The engine is cooled by air fed through the intake in the front part of the airplane cowling. Uniform cooling of the cylinders is ensured by deflectors located on each cylinder. Main assemblies and parts of the engine are lubricated by oil under pressure. The engine is started by compressed air. Air is distributed among the cylinders according to the required sequence by the compressed air distributor. Puel-air mixture is ignited in the cylinders by high-tension electric spark generated in two magnetos operating in parallel. Two spark plugs and a starting valve are installed in each cylinder. The engine is secured to the engine frame ring by eight bolts extending through the holes of the mixture collector bosses. The M-14P engine carries the following accessories: The V530TA-D35 variable-pitch airscrew - on the airscrew shaft The R-2, series 04, speed governor - on the gearbox housing The AK-14P carburetor - on the mixture collector Two M-9P magnetos, generator GSR-3000M, series 4 (Ref. 024.30.01), compressed air distributor, compressor AK-50A, series 3, DTE-1 tachometer generator, MM-14A oil pump, 702ML fuel pump - on the crankcase rear cover The engine gearbox decreases the crankshaft speed relative to the speed of rotation of the airscrew shaft. 18 Engine M-14P. Front View Figure 1 19 Engine M-14P. Rear View Figure 2 20 1.2. SPECIFICATIONS 1.2.1. Engine Designation................................................................................ M-14P Cooling system .......................................................................... Air-type Engine starting system .............................................................. Air-type Engine continuous operation time: At take-off rating ..............................……..………….................. Up to 5 min At maximum permissible speed, of rotation .......... ................... Up to 1 min At other ratings .................................. ...................................... Not limited Iverted engine operation: Ratings ........................................... .......................................... Nominal Continuous operation time ......................... .............................. Up to 2 min Total time within service life ...................................................... Up to 18 % Maximum permissible speed of rotation ............... ................... 2950 (101 %) r/min Acceleration (pickup) from 760 r/min (idle) to take-off rating on stationary airplane .............. ....................................... Up to 3 s Maximum permissible crankshaft speed drop when changing over to one-magneto operation at nominal rating II and cruise rating I (low-pitch airscrew) .. ...................... 85 r/min (3 %) Number and arrangement of cylinders ................. .................... 9, radial, single-row Cylinder numbering .................................. ................................ Countercio ckwise if viewed from rear cover side, top cylinder is Ho. 1 Cylinder bore ............................................................................. 105 mm Piston stroke: Cylinder No. 4 .................................... ....................................... 130 mm Cylinders Nos 3 and 5 ............................................................... 130.15 mm Cylinders Nos 2 and 6 ............................. ................................. 130.23 mm Cylinders Nos 8 and 9 ............................. ................................. 130.39 mm Cylinders Nos 1 and 7 ............................. ................................. 131.25 mm Total displacement .................................. ................................. 10.161 1 Compression ratio ................................... ................................. 6.3±0.1 Direction of rotation of crankshaft and airscrew shaft ...............LH Engine dry mass ..................................... 214 kg+2% NOTE: Engine dry mass does not include mass of the generator, compressor, fine filter with pipelines, engine frame ring, exhaust manifold parts, tachometer generator. Engine overall dimensions: Diameter (over valve mechanism case covers) ....... ............... (985±3) mm length ............................................ ........................................... (924±3) mm 21 1.2.2. Gearbox Type ................................................ .........................................six-sateliite, planetary, single-stage Transmission ratio .................................. ..................................0. 658 1.2.3. Airscrew Designation ......................................... .....................................V530TA-D35 Type ................................................ .........................................Variable-pitch, push-type 1.2.4. Blower Type ................................................ .........................................Centrifugal, single-stage, single-speed, mechanical drive Drive transmission ratio ............................ ................................8.16 1.2.5. Carburetor Designation ......................................... .....................................AK-14P Type ................................................ .........................................Floatless