Wd-5 compressor noise

Can anyone tell me how to make the compressor on a WD-5  quieter? when it runs it makes a high pitch kind of whining noise. It does cool great however and it does cycle properly. Any ideas? thanks troy

[MoonDawg]

A bent fan blade will make a high-whinning pitch.   I usually shove a rag in all fans before plugging in. When the compressor comes on, I pull the rag/rags to pinpoint the noise.

Glen

glen, tried the rag in fan trick but that was not it. any other suggestions. Anyone? it is like a high pitched continueos whine only when the compressor is running. thanks troy

[johnieG]

might be a copper line or the condensor coil rubbing/chattering on the frame. or deck plate