A friend of mine has a Clausing 8520 mill with a Servo brand power feed on the table (probably a model 140, or similar). He's put it to good use for many years as a free-lance custom machinist working out of his home. Lately the clutch mechanism that disengages the power feed has been sticking. Ordinarily, when you move the power feed control lever to center, the gears are supposed to disengage so you can use the handwheel. I think there is a spring loaded mechanism that pops the drive pinion down away from the big bevel gear.
Does anyone know if this is easy to fix? It could just be fossilized lube, or it could be that the spring is busted or has taken a set. I'm also not sure what would be involved in getting far enough into the drive to diagnose and fix it. I suspect it may have to be removed from the table, which is not a quick process. Parts shouldn't be a problem if he can get it apart.
Thanks!
Doug White