Oil leaking from bottom of tank

I have the 60 gallon stationary compressor I bought from Lowes in June of 2013. Worked fine for a short time, but there is now an oil leak coming from under the motor about an inch behind the drain plug.


It is not leaking from the drain plug itself.

This started before I changed the oil the first time, so it was using the oil that it came with; I have never overfilled.
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Sounds like a problem that mine had.

The pump housing gasket was wicking oil, the oil would slowly work it's way down the housing to the tank, down the tank, and then would drip - only a drop every hour or so - from the lowest point at the bottom of the tank.

Check all the oil sump and pump housing nuts for tightness and see if that helps.

I added a "diaper" to my air compressor to finally resolve the issue. A permanent wadded up cloth sits under the compressor pump housing between it and the tank, and that catches any drips. I monitor the oil level in the sump carefully to ensure I don't run low.

Cheers,

Bill

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Gernaded compressor

by Charlie Reibsome
(New Columbia, PA US)

Two year old, Model 37296 1.5, 26 gal. compressor head blew up. I now have an air storage tank when I can afford to buy another air compressor.

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No pressure accumulation in the tank?

Kobalt air compressors - http://www.about-air-compressors.com

Kobalt air compressors - http://www.about-air-compressors.com

I have a Kobalt 60 gal. vertical Tank air compressor that has worked fine for the last 7 years.

I bled the tank dry of air to empty condensation from the bottom, and then then I closed the drain valve and restarted the unit.

I ran it for quite a while but the tank would not accumulate any significant pressure (the tank side pressure gage does not even budge although I show just a token amount of air output at the hose connection outgoing). I rechecked the oil level and removed the filter (dirty but not totally blocked ) and ran it again but no difference was observed.

I rechecked to see if the bottom drain valve was tight (it was) and then using a soap water solution checked all the fittings looking for a leak and none was found.

Finally, I pulled the copper tubing connection from the compressor (output) to the tank, and when I run the compressor the pressure output is so weak that I can fully block it with my finger and moderate hand pressure.

Is this normal? Does the system depend upon low pressure and high volume from the compressor to load the storage tank and that is the real source of high pressure output? Should the output be significant enough that I could not hold it back by hand?

Or do I have a blown head gasket, worn rings or what? Before tearing into it I am looking for some info on what that output should feel like to determine what might be going on with the compressor or if in fact it's ok and I have a crack or pinhole (highly unlikely since this has been operating in an indoor dry environment) in the tank or if something else keeping it from accumulating any pressure.

I am open to all test suggestions to trouble shoot this further so let know what you suggest!

Thanks,

Jerry
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Jerry, I think that it is just coincidence that your compressor stopped working properly after you drained the tank. I don't think the two issues are connected at all.

Good that you pulled the line to the tank and felt the outgoing pressure from the pump. That you can block, or almost block, the outflowing compressed air with your finger tells me that the pump has a problem.

Tell you what. Why not pull the intake filter and try that test again? If the outflowing air pressure is still weak, then you have eliminated a plugged intake filter as the problem.

Then, with the intake filter off, feel the air inflow into the intake port while the compressor is running. Is there powerful pull? Is air huffing back out?

Low vacuum or lots of air huffing out says to me that the air compressor intake valve is pooched. If that's the case, you need a valve plate (or replacement valve) and, if so, you might as well replace both valves and get new gaskets too, as a blown gasket could be part of the problem.

Any luck with this?

Cheers,

Bill


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Kolbalt 26 gallon - pressed their hand over the intake while it was running

by Pat

Kolbalt 26 gallon 1.5 hp oil free direct drive air compressor

Some one pressed their hand over the intake while it was running.. now it will not turn on at all. What should i do to fix it?
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It seems strange to me that blocking the intake should stop your air compressor from starting, Pat.

Depending on how tight the seal was, blocking the intake might have damaged the intake valve, but the compressor motor should still run.

First, read all the tips in the troubleshooting section on the sitemap page on the pages about why air compressors won't run.

Then, as a comment here, tell me if there is any sound at all when you plug the compressor in to a live plug, and with an empty tank on your compressor?

Cheers,

Bill

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Aug 04, 2013
pressed their hand over the intake while it was running
by: Pat

Thanks for the quick reply. There is no sound what so ever. I have tried different outlets, checked the circuit breaker switch and there was still nothing.

My buddy put his hand over the intake not knowing what it was and it just stopped running after a good two seconds of being blocked.
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OK, if nothing happens to the motor with the plug in and the tank empty, you need to get a multi-meter, plug the compressor in, open the top of the pressure switch, and make sure that power is actually getting through the switch to the motor circuit. Be careful, the inside of the switch will be live.

If power is running through the pressure switch to the motor circuit, and the motor is making no sound whatsoever, then it is possible that the start capacitor has pooched, and it is just a coincidence that this happened with the hand incident.

You can see a page on this site about testing the capacitor.

If the hand was over the intake for more than a few seconds, then it is possible that the motor overheated and has a problem as a result of that, but that should have taken quite a bit longer than 2-3 seconds.

B.

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