Analyze, troubleshoot, install, repair, rebuild, adjust and replace mechanical equipment such as, but not limited to, bearings, motors, heat exchangers, boilers, ventilating and air conditioning compressors, water and pneumatic valves, humidity control units, coolers, freezers and exhaust hoods. Specific duties include repairing, rebuilding, and replacing bearings, motors, heat exchangers, air conditioning compressors, heating boilers, ventilation and air conditioning systems, air filters.