I forgot to post this earlier but Greg gave me some used vacuum hoses from his Morgan Road wash, which are actually very nice. Thanks Greg for the hoses!
Well I removed the 1″ barb today, which I was scared to do. It came right off though, which is good. But look how bad it got: I really should have paid better attention.
I still had a hard time today trying to get the dead motor off the stand. Most of the bolts came off and 2 were to far corroded and rounded that there was no way. So I had to take out the grinder.
I tried to install a new motor today and failed. The old motor seems to be rusted to the base. I need to get some different tools and try again tomorrow. I did unscrew all the wires today and dump out all the crap from inside the multistage pump, which consists of a bunch of plastic cylinders?