I have a video of how to replace the belt without taking it apart. Its on one of my phones as I recorded the tech doing it. I will upload if need be, as I have to source it on an older phone. I do remember he took the left side apart only. he undid the rod and was able to slip the belt on. careful for the way the belt is knotched.
The cigarobession guy on youtube has a good video too, but that is almost a complete tear down. You might listen to his cigar advise as you will want to light one up after you complete this!
My tech replaced the fan as well.
I would look up Mark Lindquist's posts here as well. His step by steps got my machine up and running. he has links to the parts, and the explanation documented, as well as other sournces to help. Once you go through it, and all physical parts are in good standing, the key thing I learned to unclog is get as much ink running through it to keep ink moving and eventually with enough head alignments checks, and such it will sing on all notes.
