You are only 5 minutes away from pulling the whole cooling system out so
you can get your hands in there to work on it properly.

Hi Mark,
Welcome to the site! Not sure what type of Cornelius machine you have. Could you post a picture. Anyway hope this helps.

Take pictures of all the electrical connections and lable the wires. Unplug same. If the entire cooling system is on one deck just remove whatever bolts are holding it in place and slide it out. Careful to not bend any cooling system copper tubing. If there is a unit above the compressor it helps to get a friend to help you slide both assemblies out at the same time.

Best to build a stand first that will hold both units at the same distance that they were in the machine. Transfer to the stand without bending or twisting the copper tubing.   

Now you can replace parts/clean/polish to whatever level you choose. The cooling fin area should be cleaned and if a large area of bent fins is present they should be straightend.

As long as the refridgeration system does not get a kinked or split tube it should not lose any freon.
Creighton

Depending on the size of the screws, sometimes using a vice-grip will work.  I had to do this on some of the screws on my machine as they were stuck and/or stripped out.  I would just grab the head with the vice grip and twist.  Sometimes it took a few tries as the vice-grip would slip off.  Either the screw would start turning or it would snap in half.  Either way I was able to get them off them.  Though in your case, it might not work as fan screws are usually pretty small.

      Ok you are confused because you can't get to the evaporator (cooling coils).
 Empty the soda cans then slide the dispenser unit out. It's not as difficult as you
might think. Remove a few nuts near the edges, unplug it's wiring harness and slide
it forward and out. It's a little heavy so have someone help you the first time.

K, thanks guys. I'll do that tonite and post it.
Mark