Replace screw air compressor lubricating oil by stopping the machine, draining old oil, cleaning pipelines, adding new oil, and replacing the oil filter. Check oil level after starting.
[pdf] A rotary drilling rig works by rotating a drill string, which applies downward pressure to a drill bit that grinds the earth. Drilling fluid or air is pumped down the drill string to cool the bit, carry cuttings to the surface, and stabilize the borehole.
[pdf] Solutions: Inspect the system for leaks, replace clogged filters, and check for worn parts like seals or rotors. Possible Causes: Loose components, bearing wear, or improper alignment. Solutions: Tighten loose components, inspect bearings, and ensure proper alignment of moving parts.
[pdf] 
