I just aquired a mac cummins 12 speed drill press and the cylinder that lets it go up and down is seized. The motor and everything else works but i cant get it to go up and down. I was wondering if there is a manual or guru that will assist me in finding the reason why it is seized and also how to fix it.
I have a couple of drill presses that have a quill lock which fixes it in place. I am not familiar with your machine, but this may be an issue.
It may be a large wing type nut on the shaft that the handle is on.
It is also possible that the quill is jammed. There is a small gear on the shaft that the handles rotate that fits on a rack type gear that moves the quill.
This could happen if the quill is all the way down and passed the gear.
It is also possible that this is jammed or has something stuck in it.
Instructions
Test fit a drill bit in the lock cylinder. You want a bit that is just
smaller than the cylinder. You will be using hardened drill bits to cut through
the cylinder, since ordinary bits may be damaged by drilling metal.
Lock the drill bit into the drill chuck and tighten the chuck.
production in very fast delivery! special threading taps, plug gauge
Drill a starter groove into the lock cylinder. Start the drill on a low
speed and create a groove in the end of the lock cylinder. You don't need to
create a deep hole, just enough of a groove so that the drill bit will not slip
on a higher speed.
Increase the drill speed to the highest setting and drill out the lock
cylinder. Let the drill do the work. If you force the drill into the lock
cylinder, you could burn out the rotor inside the drill motor
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