SMC Discussion Areas

Anyone have luck getting off the threaded leveling feet on the bottom of an old machine??  I'm trying to get the rusted things to turn out, but not having any luck.  I used penetrating oil, but the 1st one snapped right off when I twisted it.  HELP.........

Thanks,
Vendo Guy

I've tried heat, which has sometimes worked.  Other times, I sawed them off and retapped the holes.

Try WD40 first if not I use heat.

I've soaked mine in cups of CLR before...

Heat always works for me. Just use a blow torch and they will loosen right up

Use PB Blaster

PB Blaster is pretty good as long as you let it soak. I'll apply generously and then apply again. Another method not mentioned that does work sometimes is tapping/hitting the leg leveler with a hammer straight from both directions, top and bottom; be sure not to bend it! This loosens the threads enabling you to loosen. I've been successful many times using PB Blaster, hammering & loosening as I go. Tightening and loosening as you go will keep the threads self-cleaning as you go...
Worse case senario, you'll have to drill and tap, 3/8 - 16 thread.

Believe it or not, good old fashioned motor oil works as a great penetrant and lubricant. Another trick which is a bit scary but works well with fire - heat the nut to cherry red, then shoot the stud with a rust penetrant. This cools the stud before the nut actually making it shrink a bit and breaks the rust free. It does smoke bad, and also a potential fire hazard...

I have had luck with bubba's plan.  It smokes bad and if it is in an enclosed space will smell like you just blew up a motor.  I have done this a few times with good luck but I have twisted them off,  it is a throw of the dice....