DeVilbiss 44643 Compressor Head Advice

[AMCguy]

I've wanted a used industrial quality compressor for home shop, media blast cabinet use for some time now. I finally found something for a low enough price that I thought taking a chance that it could be total junk was still worthwhile.

Well, it's total junk.

I knew I'd be replacing the 5hp 3 phase motor with a same frame single phase, but I had hoped the head was still in decent shape. It ain't. With the belt off, I can quickly rotate it about twenty or thirty times with a speed handle and feel very little resistance. When I open the ball valve at the outlet, barely a baby's breath comes out.

Where do I even start? Take a peek at the valves first and hope that's the problem? I suppose then I can take the head off and look at the pistons and bores. I can buy a total overhaul kit for under $400 so I'm prepared to go that far but I'd kind of like to be able get it back up to running as cheaply and quickly as possible.

By the way I paid $200. I knew it came out of a concrete readymix plant. That should have been my first clue. Why would you remove a perfectly serviceable industrial compressor? Secondly, there was no air filter in it. That should have been my second clue.

Okay. I'm a slow learner. On the upside, it looks a lot better now that I've pressure washed it.

Thanks,
Glenn

 

[marinusdees]

I have the same compressor, ceptin' I bought it for $400 with a Leeson single phase 5 hp. Used. I have used it for hobby? use for 20 years. I would tear it down before buying parts. The head comes off, then look it over. If you wanna see more, gonna hafta free up the crank. The block is one piece, called the jugs. If you have mechanical ability, tear it down. What have you got to lose?? $200 that you paid??

 

[The Cobbler]

I agree, tear the head off & look at the bores, valves , etc. if the bores are scored, pull off the jugs & have a look at the pistons.