PISTON 2G7280 - Caterpillar

Illustration 1 g01262769
(1) Exhaust port for governor (2) Governor (3) Delivery port for governor (4) Supply port of governor (5) Air inlet (6) Discharge valve (7) Unloader port for air compressor (8) Air discharge (9) Air dryer (10) Inlet valve (11) Piston (12) Stroke (both directions) (13) Air compressor (14) Inlet port for air dryer (15) Control port for air dryer (16) Delivery port for air dryer (17) Air reservoirThe compressed air will go to the inlet port (14) for the air dryer (9) . The dry compressed air goes to the air reservoir (17) for the air supply. The air pressure in air reservoir (17) will eventually reach the pressure setting of the governor (2) .The compressed air will flow from air reservoir (17) to the supply port of the governor (4) . Governor (2) will allow the compressed air to pass from the air reservoir (17) through the governor (2) .The compressed air will flow from the delivery port (3) of the governor (2) to the unloader port (7) of the air compressor (13) . The compressed air will activate the unloader system of the air compressor (13) . The discharge valve (6) of the air compressor (13) will be closed. The inlet valve (10) of the air compressor (13) will close.When the air pressure in the air reservoir (17) drops to the minimum pressure setting of the governor (2) , the governor (2) will no longer allow the compressed air to pass through the governor (2) . The governor (2) will release the compressed air that is in the line between the delivery port (3) for the governor (2) and the control port (15) for the air dryer (9) . This will close the air dryer purge valve.The compressed air between the unloader port (7) for the air compressor (13) and the delivery port (3) of the governor (2) will be released through the exhaust port (1) for the governor (2) . After unloading, the unloader piston returns the valve to the loaded position. This seals the unloader port.The compression of air will resume.