• Apr 11, 2026 Campbell Hausfeld Air Compressor Troubleshooting Guide re the machine properly Bearing Wear Worn bearings create grinding or screeching sounds Piston Issues If the piston assembly isnt properly lubricated or if a valve isnt sealing properly it may cause unusual sounds Broken Belts or Loose Couplings A loose belt or coupling can cause a lot of BY Gavin Runte