So I don't know jack about the insides of fusing units, but lack of knowledge never stopped me before... lol
I pulled the fuser, and popped off a few of the covers, just enough to get a decent look at the rollers. They looked okay, as best as I can tell (not sure what a 'healthy' roller should look like), but I noticed a little of what I'll call debris on the rollers and falling out of the unit if I turned it over and gently shook. It almost looked like...ash? It was similar in size to very coarse black pepper, but more of a flaky shape, dark gray or black mostly, and sorta 'crunchy' in texture.
I blew it all off with canned air and oiled the bearings as best as I could without tearing apart the assembly too far, since I had no confidence of getting it back in place tonight. Besides, these appear to be sealed bearings, no?
Anyway, I put everything back together, and it's definitely much quieter. I still hear the knocking noise now and then, but it's easy to ignore for now.
I think I'll keep an eye out for a decent rebuild kit and try my hand on that one of these days. If I could identify just the bearings, I'd be happy to try just those, but without an actual part number or bearing spec, I'd have to tear the whole thing apart, and at that point I might as well rebuild the unit if the machine will be down waiting for parts anyway.
If anyone finds a reputable kit for the Bizhub 364e (not C364e, I've made that mistake before), I'd appreciate a link. I'm coming up goose eggs on my searches.
Thanks for the help guys. As always, I'd be totally lost in this machine without your expert guidance!
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