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CAP-60P-OF will not build pressure

Published Categorized as Air Compressor Not Reaching Cut Off Pressure, Bostitch No Comments on CAP-60P-OF will not build pressure

by Jeff Smith
(Mt Ulla, NC, USA)

I have a Bostitch CAP60P-OF, will not build much pressure past 20 psi, runs forever.

I removed the pump head & intake valve, look good to my knowledge, reassembled and same issues.

Bostitich CAP60P compressor parts diagram
Bostitich CAP60P compressor parts diagram

I also removed the aluminum tube and used another air source and pumped air directly into the tank at the check valve, pressure went up as expected. I then removed the aluminum tube, and I could hold my finger over the exit port indefinitely.

I would like to know the possible cause, and where I can purchase a rebuild kit. Thanks for the help, Jeff Smith

Hello Jeff… from the sounds of it your compressor valves are compromised, you may have a piston seal wear issue, or you may have a gasket that lets go at 20 PSI, and instead of air going into the tank with force, as soon as there is back pressure, the air simply cycles inside the pump.

As to parts, if you search “compressor parts for Bostitch CAP60P-OF” as I just did, you will find a number of sources.

Maybe you could upload a photo or two of this model of Bostitich? Thanks.

New comment? New question? Please add it here along with photos to help others help you with your compressor and equipment problem!

By Bill Wade

About Air Compressors has been helping folks with their Air Compressor Problems since 2002 online. We're a community of DIY and Compressed Air professionals who are keen to support everyone across the globe with their air compressor issues and troubleshooting. Whether you're trying to identify an old air compressor, or troubleshoot an error code on a sophisticated new industrial air compressor - the community at About-Air-Compressors.com is here to help you

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