Blowing discharge side head gaskets in IR15T air compressor

IR15T air compressor pump

IR15T air compressor pump

I have a 15T IR air compressor three stage.

Originally I went out on this call because it was leaking air through the high side jug gaskets.

I found the internal guts of that head to be loose and discolored. I thought they were just worn out. I replaced them and the gaskets.

30 days later, those same gaskets are now blown and just as brittle as the first ones and the guts are nice and red like they were overheated.

Can anyone help with this? Thanks!

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Jul 20, 2015
by: Doug in

Juan - Good luck.

Can you get some pix of that valve area?

I don't know what the thing that was stuck is, but maybe we can figure out its function.

Jul 20, 2015
Relief Valve?
by: JUAN

So guys...I did not make it back in time to stop this thing before it blew another gasket. I finally just took the compressor assembly off and brought into the shop. As I was going through it, I did find that the oil was not the color I normally see in compressor oils for this model, it was like some petroleum based oil or gear oil. So that is getting changed to the clear synthetic oil I am used to working with. What I did find in the back of the head was some type relief valve that is lined up directly to the bottom of the discharge valve that I keep replacing. the darn thing was stuck, no air in or out either way. Could this be my problem? Not sure, but this line leads to the oil cover as well and their was oil in the line, so it may play some type of lubricating point. Ordering the parts now, will probably be back late in the week to put this thing in.

Jul 08, 2015
by: Doug in

By all means, change the oil - if you have the right stuff. Wrong oil might be the root cause of the problem. 30 weight non-detergent synthetic.

Pump supposed to be continuous duty up to 175 psi max.

Jul 08, 2015
RPM/Two stage
by: Juan

You're right, it is a two stage, I'm a little new to all of this.

The cut out on the compressor when I was working on it was 150psi, I think it is rated up to 200psi.

As far as the rpm, I have not checked that yet, but it runs on an electric motor. I have not been out to the compressor yet.

I just replaced the blown gaskets and burnt high side valve about a week ago, I also replaced the air filters.

I think I can go out on it by Friday and check on your question.

I am thinking about changing the oil to see if it helps it cool down.

The last time it blew the gaskets it lasted about three weeks.

Sorry for the late response, my alert did not go off when you replied. Thanks!

Jun 12, 2015
by: Doug in

Maybe it is overheating.

I don't see a three-stage, are you sure?

Anyway, can you figure out what speed the pump is running? Looks like that series runs at less than 900 or so RPM.

And what cut-out? Maybe it's just running too long/hard.

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