Hardinge HNC retrofit and where to start

I am applying shop air right at the collet closer, have not tried to give it a love tap,


I will give that a try, is the collet unscrewed from the spindle end like the royal collet closer or is from the closer end


I have what looks like a spanner nut (two Holes for a wrench ) on the closer end?


I hope thats clear I don't know any other way to describe it?




Bob

Thanks John


that would have taken a little investigation to figure out, Nothing at all like the royal or dorian collet closers




Bob

hey big john


I got the collet closer unstuck, some yahoo tightened the thing so tight that the
air cylinder would not even move. I disconnected the air lines from the tail end of the closer and loosened the four 1/4-20 bolts, used a little pb blaster on the spindle end and low and behold the collet came right out none the worse for wear, the collet closer does not seem to be leaking but the air solenoid that controls it have attached a pic in this post, is there supposed to be an o-ring in the groove that I am pointing at?

or will this solenoid leak w-o power applied?


thanks


Bob

I saw that too Andy but the mating part is a plunger and it moves up and down to direct airflow to either side of the collet closer, Maybe i will disassemble the valve for the parts catcher and see if it has an O-Ring. that one is not leaking. Just in case where is a good place to buy new valves?



Bob

Sorrry i posted my last update in the wrong thread.


I got the HI AK's powered up on my lathe and jumpered pins b-e and applied 1.5v across pins g-h

but got no movement on either servo, is there any way to bypass the servo and at least test the motor and make sure that is working< at this point I think I will have to buy drivers for the resolver motors if they are O>K>



thanks all


Bob

Or just a thought does anybody have a set of known good HI-AK's that they could part with

for a reasonable cost?



Thanks


Bob