Replacing fan on LPL 4550 XLG

Does anyone have knowledge on how to remove the fan (which vibrates) from the housing of the LPL 4550 XLG enlarger. I have removed the fan/lamp housing from the head, removed the side plate, bottom plate, and the 3 screws from the side. The fan moves inside the housing, but I cannot figure how to get it out, nor a replacement back in. Thanks.

why not call tech support at omega and see if they can help you.