by william clough
(spray, oregon)
I’m looking for service manual and/or user manual for Master Power air compressor by cooper tools model #mpac521 twin stacked tanks w/150psi max.

Trouble shooting and testing of condenser and check valve.
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Is this it?
Please copy and past the URL in to your browser to see if it still works, and, is this close to yours?
https://www.alltradetools.com/pdfs/new/archive/Powerbuilt-HotRod-5-Gal-Air-Compressor_647376_eng.pdf
mpac521
I’m looking for the parts listing/manual for mpac521 t00.
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mpac 521 compressor
There is a URL to a compressor by Alltrade Tools in this thread.
If that URL isn’t the manual you want, the only other Alltrade compressor I can find is here:
http://www.alltradetools.com/catalog/19-481214-5-gallon-twin-tank-compressor-with-air-hose.html
Maybe visit this page, get the contact info for Alltrade and give them a shout?
HEY GUYS.. the Alltrade 64376 is similar but parts do not interchange as different Manufactures….
I have one of these I got from job. It had the capacitors removed and circuit breaker disconnected. I would appreciate it if someone would be kind enough to share wiring schematic
Did you find parts for this compressor? I’m looking for a replacement pump. Everything’s else is fine but the pump is not putting out air. Costco purchase about 15 years ago. If you still need the manual I can send pdf. Not much in it though, no parts list and Cooper Tools is just a wholesaler of hand tools (nice tools though) in Apex, NC. I can get any contact information for the operation. As you probably know, Alltrade has nothing to do with these particular Chinese tools.
Looking for a manifold for a power master mpac521