Auto A/C Compressor Noise Troubleshooting chart.
|Compressor Noisy||AC compressor internal noise||Bearing worn or damagedDefective cylinder/or shaft||Disassembly and replace defective parts.|
|Magnetic Clutch Noisy.||Rattling noise when magnetic clutch is not engaged .||Bearing worn or damaged.||Replace bearing.|
|Noise from piping||Piping not secured.||Piping vibrating .Pulsating noise resonates into body.||Secure piping.|
|Noise from condenser||Condenser vibration prominent.||Condenser mounting stay resonating with body .||Secure by inserting rubber between stay and body.|
|Noise produced by bracket.||Rattles when touched, continuous rattling heard when operating.||Bracket cracked or broken.Mounting bolts loose.||ReplaceRetighten bolts.|
|Idler pulley noisy.||Clattering noise produced. Rattles when touched.||Bearing broken.Bracket Cracked or loose.||ReplaceReplace or retighten.|
|Noisy crankshaft pulley.||Rattles.||Improperly installed.||Replace or retighten.|
|Belt Noisy||Belt deflection excessiveBelt side surface wornBelt worn||Belt wornBelt center misalignedWorn belt causing belt slipping on pulleys and tensioner||Adjust tensionAlign centerReplace belt|
|Noisy belt tensioner||Squealing belt and/or rumbling noise||Tensioner bearing or tensioner spring weak||Replace belt and tensioner|
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