Compressor won't build pressure past 50 PSI.

[GregWeld]

Michael ---- GO here and poke around.....



http://www.about-air-compressors.com...ast-30psi.html

[GregWeld]

Same website - has a check list of things to consider and look for.... seems your issue is very common.


http://www.about-air-compressors.com...-pressure.html

[Sonar Chief]

Originally Posted by GregWeld

Same website - has a check list of things to consider and look for.... seems your issue is very common.


http://www.about-air-compressors.com...-pressure.html

Thanks for the link ... at least I wasn't holding my breath for an answer from Sears!

Thanks again .... reading time now!

[Sonar Chief]

Well, this is frustrating as hell! After I replaced the pistons and cylinders, new gasket it would make about 35psi. Hmmm... bought the plates or "heads" which contain the intake and exhaust reeds, replaced them and the gauge, still running forever and never gets past 35psi, what the halibut?

Forums and emails have not helped much as I have replaced everything mechanical, the electric motor is not running hot (as it would if it lost one 120 vac line) ... so?

If anyone needs a 275 paper weight let me know! jk

I still need to get this fixed so I can keep using my air tools!

Any other suggestions?

Thanks again,

Michael

[dhutton]

Originally Posted by Sonar Chief

Well, this is frustrating as hell! After I replaced the pistons and cylinders, new gasket it would make about 35psi. Hmmm... bought the plates or "heads" which contain the intake and exhaust reeds, replaced them and the gauge, still running forever and never gets past 35psi, what the halibut?

Forums and emails have not helped much as I have replaced everything mechanical, the electric motor is not running hot (as it would if it lost one 120 vac line) ... so?

If anyone needs a 275 paper weight let me know! jk

I still need to get this fixed so I can keep using my air tools!

Any other suggestions?

Thanks again,

Michael

Is the unloader valve stuck partly open?

Don

[dhutton]

Unloader valve information here:

http://fix-my-compressor.com/air-con...nloader-valve/

Don

[Sonar Chief]

Originally Posted by dhutton

Is the unloader valve stuck partly open?

Don

I don't believe so ... the tank is holding pressure! It makes so much noise when its running, I can't hear any leaks though.

I even replaced the check valve, there was nothing wrong with the OEM thou!

Got me ....

[dhutton]

The unloader valve is a different valve than the check valve. It releases the compressed air from the cylinders when the compressor powers down so that it does not have to start back up under load. It will cause the problem you are having if it is leaking and bypasses air all the time.

At least this is my understanding.

Don

[Sonar Chief]

Originally Posted by dhutton

The unloader valve is a different valve than the check valve. It releases the compressed air from the cylinders when the compressor powers down so that it does not have to start back up under load. It will cause the problem you are having if it is leaking and bypasses air all the time.

At least this is my understanding.

Don

Don ... I pulled the unloader valve from the switch and blew it out, started the compressor and put up a cardboard shield and there is no leak!

I then pulled the intake line off the top of the check valve and started it .... yep compressed air going into the tank!

This makes no sense .... won't get past 35psi no matter how long it runs!

Thanks for commenting .....

Michael

[Build-It-Break-it]

Silly question but have you tried another gauge? Could the gauge be reading wrong? They go bad all the time.