Craftsman 1/2" Impact Wrench "rotary tool" Questions

...tool repairer ,it is not expensive. dont use wd40 or the like if dont have airtool oil use auto transmission fluid and this wont happen too often I found a valve seat from the rotary engine oil ...

tool box when the valve went out years ago. In a clean up round I pulled it out to make the decision fix or recycle. One of those not wanting to throw out a perfectly good impact I started looking for