SINGLE CYLINDERAIR COMPRESSORTM 5-3805-258-24-1SYSTEMS OPERATIONAIR COMPRESSOR OPERATIONTYPICAL Al R COMPRESSOR SYSTEM (950BNS and 950BS)1. Ak tank. 2. Coolant line to engine. 3. Air line from the air inlet manifold for the engine. 4. Coolant line from engine. 5. Air lineto air tank. 6. Air line to unloader valva in heed assembly. 7. Air governor. 6. Prassura gauga. 9. Air Iina to air govarnor. 10. Aircompressor, 11. Oil line from engine for lubrication. 12. Oil outiat to angine.13. Air Iina to componentsthat naad air for operation.MODELS 950BNS AND 950BSThe air compressor (10) is a pump that fills tank(1) with air. The crankshaft in the air compressor isdriven by the engine and the air compressor oper-ates when the engine is running. The head assemblygets the coolant from the engine. The coolant goesthrough a line (4) connected to the coolant man-ifold from the water pump of the engine. The cool-ant goes through the head of the air compressorand through a line (2) to the coolant manifold tothe radiator of the engine.When the crankshaft is turning, it moves a con-necting rod and piston up and down in the cylinderof the air compressor. When the crankshaft movesthe rod and piston down, the inlet valve in thehead assembly opens and air from the inlet man-ifold of the engine goes through a line (3), throughthe open inlet valve and into the liner of the aircompressor. As the crankshaft turns farther itmoves the rod and piston up and the inlet valvecloses and the exhaust valve opens. The pistonpushes the sir from the cylinder through the openexhaust valve and through a line (5) to the air tank(1). The movement of the crankshaft, rods andpiston puts more and more air into the tank andthe pressure of the air gets an increase. The air inthe tank is also in the line (9) to the air governor(7) and in the line to the pressure gauge (8).The air compressor puts air into the tank (1) andin line (9) until the increase in the pressure of theair gets to the cut out pressure setting of the airgovernor (7). The pressure of the air now moves aplunger in the air governor and the air from thetank through air line (9) goes through the openvalve in the air governor, through a line (6) andinto the unloader valve in the head which movesthe inlet valve open. As the air compressor pistonmoves down, air from line (3) goes through theopen inlet valve into the cylinder. When the pistonmoves up, the air in the cylinder moves outthrough the open inlet valve but does not go to theair tank.3-126
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