Wrist Pin Bearing on a rolair 80 gal dual stage pump

I have replaced all of the inner parts and after using it several times the pump started to knock loudly any ideas on what could cause this.

Comments for Wrist Pin Bearing on a rolair 80 gal dual stage pump

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Nov 12, 2015
Noise
by: Doug in s.d.ca

Bummer.

Maybe you can narrow it down using a stethoscope, but you're going to have to take it apart again to find whatever it is that's loose or broken.

If it's just something loose and it's not damaged, may get away with just reassembling it, make sure everything is torqued properly, and if that was the case the first time, maybe use a bit of Loctite or similar to hold it together.

Good luck.

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