Thanks for the replys. I found a website that gives the taper dimensions and measured my one toolholder (came with the machine) and it appears that it is in fact BT35 taper. I can now order the proper toolholders.
Thanks again,
Charles

Can anyone tell me if the 1991 Triac with the tool changer is BT30 taper or if not what taper it is?
Thanks in advance,
Charles

Thanks to the schematics provided by Martin I have solved the problem :D It puzzled me why the keyed drawbar release switch did nothing when switched. After looking at the schematic and measuring the voltage across the switch (there was none) I disconnected one of the leads going to the switch and c...

Thanks for the schematics Martin! They will be a great help with the diagnosis.
Charles

I took all of the covers off to see what is happening. When I start up the machine (Turn the key and push on) it comes to life and the drawbar cylinder is activated and the tool is released (Onto a foam pad). I datum the machine and it asks if I want to datum the tool changer also. When the tool cha...

Thanks for all the great responses to my problem. I still have no solution as of yet. If I am right, pressure is applied to the drawbar cylinder and the spring washers are compressed dropping the tool holder. The new tool is inserted, the pressure is released and the new tool is locked in. Here is w...

I am going to do a full check on all of the switches this weekend. The keyed drawbar lock/unlock switch does nothing either. When I start the spindle the tool locks in perfectly but as soon as I stop it it falls out. Does anyone know what kind of driver I need for this machine or will Auto cad run i...

Thank you for all the responses to my problem. It does have the secondary regulator and I tried different pressures with no luck. I do not have the unit connected to a computer yet and am operating it from the built-in controls (I don't know if that will make a difference). There is a key switch on ...

Hello, This is my first post on this forum. I just purchased a like new Denford Triac ATC made in 1991(A beautiful machine). It has the built-in screen and auxillary monitor along with a 6 position tool changer. The problem comes when the tool is loaded. When the tool change is activated the holder ...