- Joined
- Dec 5, 2020
- Messages
- 6
As my Profile Pic reveals, I have a Bridgeport True-Trace from 1966 (with a 1962 J-head). which started my antique machine-shop project. So I solve my voltage conversion issues (obsolete Allen-Bradley controls) and filled the tank and flushed the lines. Hook everything up, activate the hydraulics...and fluid squirts out the back of the tracer head out of a threaded hole which can be seen in the first picture below. There is no mention of any missing control back there, no image of the back side to reference it, but the side view drawn does show the boss where the threaded hole is. The second picture is the actual side view the manual drawing shows. Does anyone here know what goes in that hole? Is is maybe a test port for pressure? Maybe a plug goes in it?