Dry all parts with compressed air and relubricate them with compressor oil.
If you must change the rotor bearings and races, you should do so with suitable pullers and installers. In extreme circumstances, some manufacturers recommend heating the inner races to ease removal. Disgard bearing races that have been heated in this type of removal process.
Some rotary and screw types of air compressors have an oil pump in the lubrication system. Disassemble, inspect, and overhaul the oil pump according to the manufacturer's specifications.
Before you reassemble the air compressor, make sure all the air and oil passages are clean. All parts should be lightly oiled and ready for use. The reassembly process of air compressors is not complicated, but stick to the instructions in the manufacturer's repair and maintenance manual. The manufacturers of the screw type of air compressors do not recommend that overhaul be done in the field.
As a parting shot, you can get the most out of this machinery by PERFORMING PREVENTIVE MAINTENANCE AS REQUIRED. The importance of timely oil, oil filter, and air filter changes cannot be overstressed. Do your job and this unit will do its job.
Construction Mechanic 3 & 2, Naval Education and Training Program Management Support Activity, Pensacola, FL, 1989.
Compressed Air and Vacuum Systems, NAVFAC Design Manual 3.5, Department of the Navy, Naval Facilities Engineering Command, 200 Stoval Street, Alexandria, Va., 1983.
Compressed Air and Gas Handbook, 5th ed., Compressed Air and Gas Institute, John P. Rollins editor, 1230 Keith Building, Cleveland, Ohio, 1989.
TM 5-331 C, Rock Crushers, Air Compressors, and Pneumatic Tools, Department of the Army, 1968.Continue Reading