Mirac PC toolchanger repair

[KBrown]

Afternoon all, but mainly FAO Denford technical help

I have a Mirac PC lathe, which i have had converted to Mach3.

Recently the tool changer hasn't been locking back correctly.

the ATC unlocks, indexes to the correct tool, but then when the ATC draws back in i have to rest a finger on the rotating bit and guide the head back in (2mm or so in either direction
when the head starts to rotate i can feel a very light knock, which i think is maybe a little backlash of the worm gear which then causes he head to rotate past the point of where the head castleations would interlock

FAO denford technical
i rang and asked if you can help fix, and you needed to know tha make of the ATC

I have uploaded a video to youtube for ease of understanding what is happening.

https://www.youtube.com/watch?v=Ee_CqVugX_8

thanks
Keith

[Martin]

Try adjusting the rotary position switch.

Also you could try to slow down the forward speed.