[jra8907]

Ive got a spindle on a used CNC I am working to get running. Im running into an issue where I am unable to figure out the correct pneumatic configuration of this ATC and which ports do what exactly. Trying to unclamp a collet that is currently in the device just does not want to seem to work. Ive manually put air into each port and no actions from the device. Does anyone know any information about these spindles? I have searched everywhere and cant find any info. This unit should be from around 2004 time frame.
3 Ports on top. One in center goes into the center of this plunger I can get to move up and down.
2 Ports in middle of the unit. One just seems to dump air when blowing into it, its a smaller port so maybe its a air cooling line?

Any one able to assist?