Hey, there!

When I checked on my tank this morning, the snapper that drives my closed loop was making squeaky noises. I unplugged it for the time being, but I need to crack it open and find out what's making the noise. Anyone out there dissected a Reefflo pump before and can give me some maintenance tips while I have it open? I figure a vinegar wash is a given, but what's worked well for you, and what caveats should I know about going in?

Thanks!
Derry