So the fan motor in my condensor unit started squealing like a loose fan belt last night. It was 10 pm so i went out and sprayed her down with WD-40 and she quieted up. Is my fan toast or are they serviceable? It is an AO Smith motor? Other then last night it has never let me down, it has worked all day with no problems. I run my AC 24/7 here in the desert.