Chiller Squeeks

[o2bnh20]

Now that the weather is warming up I pulled out my chiller and looked it over. I remember last summer there is an anoying sqeek in the unit, sounded like a belt. So I took the unit apart and didn't see anything that looked like it could be making that noise. There is a fan on a elec.motor but no belts. Anyone got any ideas?

Scott