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K&T 5HP-2CH Stuck in Rapid

tdieu

Plastic
Joined
Sep 11, 2022
We just acquired a K&T 5HP-2CH vertical from another department on campus that was changing to CNC equipment. It has the mono lever and automatic cycle table control. It appears to be stuck in rapid. The rapid lever does not do anything, if any of the power feed levers are engaged the axis automatically starts moving in rapid, no change spindle engaged vs disengaged. I was wondering if anyone has experienced this before or had an idea of where to start troubleshooting, or if there is a way to disengage/remove rapids all together so the machine can just be used with normal feeds.
Thanks,
Tim
 

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several forum members have machines with the monolever control, hopefully they'll chime in. If you don't have it, there's a manual covering the use of the monolever here among other places:

https://www.airgraver.com/shaper/Kearney & Trecker Milwaukee 2H Operators Manual.pdf

First thing would be to confirm the monolever is not positioned to actuate the rapid feed. Then probably to confirm the monolever is not actually actuating the rapid feed. Then, finally, making sure the rapid feed clutch itself is operating properly.

One obvious thing to check is that the two vertical spline feed rods in the right side door are operating properly-- the one feeding the rapids should be spinning anytime the motor is on, while the other should only be spinning when the spindle is on.

It wasn't super clear from your picture whether the hydraulic hoses connecting the monolever assembly are connected to the knee? Perhaps post some clearer pictures of that area.
 
It turns out the rapid traverse valve piston was installed backwards. It looks like someone took the whole assembly apart before. They welded the original oblong holes to make them round and added O rings where the hoses go to the table, maybe it was leaking. It works so I’m probably going to leave it. Thanks for your help!
 








 
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