PSI seems low on 900.15064

by Rich
(PA)

Air regulator

Air regulator

I have a small Craftsman tankless compressor (900.15064).

Its an old unit that came with a sprayer and adapters to use to inflate tires, balls etc. I tried to fill a low tire and it wouldnt inflate it! The compressor is working and putting out air but it seems its not putting out the 50-65 PSI that its rated for. Is there a way I can check the PSI? If it is low could this be from worn washers or O rings or something else? Thanks
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Rich, if the compressor does not have a regulator in the discharge line from the compressor, you might plumb one into the line, turn the compressor on, and slowly dial up the regulator pressure to where it won't go higher. That will be the supply pressure.

Or, get a tire fill valve, and instead of putting the valve onto a tire, put it onto a pressure gauge to see what pressure is coming from the line.

Cheers,

Bill

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Craftsman builds pressure but does not hold it

by Aaron Chadwick
(Conroe Texas)

Just bought this compressor used and it builds pressure but will not hold it. I can hear and feel the air escaping from around what i believe to be the regulator. What do you suggest i replace first?

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Aaron, what I would do with your air compressor is to open the tank drain with it off, remove, clean, and replace the tank check valve.

Did that resolve the issue?

Cheers,

Bill

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unable to extract petcock

by Scott
(Houston)

wing nut on my compressor stripped. Began removing the petcock but it would
not budge. I used vice grips and it simply rips the edges off of the
nut. is this reversed threadded? if not, any suggestions?

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Scott, just to be sure for me and everyone, the petcock you refer to is also known as the tank drain?

I don't know Sears standard on tank drain threads. I suspect if you visit www.searspartsdirect.com and email or talk to service, with your compressor model number handy, they'd be able to help.

Cheers,

Bill

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Outlet Tube creating its own problems

by Rod
(Los Angeles, CA)

Craftsman Compressor - the outlet tube leaking right at the connecting nut to the tank. The design of the compressor forces the looped outlet tube to absorb the operating stress vibration differences between the motor and the tank. I've ordered the replacement parts ($40 tube - yikes!)for the tube and gaskets but think this is an ongoing problem. Why couldn't a piece of the tube be connected via a flexible hose with two compression fittings? It would appear that the hose (not tube) would remove the stress vibration created on the stationary connect points.
Thanks.
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Rod, I suspect that the reason is that flexible braided stainless steel air lines are quite a bit more expensive than aluminum or copper. Or, maybe nobody told Craftsman? (Actually, you just did, if they read these posts).

As long as you use materials suitable for the temperature and the pressure, replumbing the compressor to suit your needs or resolve perceived trouble spots makes perfect sense to me. Recognize that if you make changes before the warranty runs out you've likely voided any warranty. A

Cheers,

Bill

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