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Posted in response to Auto-feed Clutch Problem on a LS-12 Saw from Daniel on September 30, 2010 at 19:12:54:

Re: Auto-feed Clutch Problem on a LS-12 Saw

.... well I guess not many troubleshooting ideas out there.

Anyway, let me post an update for anyone searching this topic in the future. The split-nut was not the problem. It was the motor, but I did not see the problem because it was turning the shaft, and it took me a while to snap to what was really wrong.

Someone had put an incompatible motor in there. It was running counterclockwise instead of clockwise, and it was running slower than 4RPM. I did not notice initially, because I was watching for forward motion, not backward, and once it backed up about 1/4 inch it could not go back any further, so the clutch did start to slip in a manner of speaking. Also the closer I looked/listened, I noticed the motor seemed to be straining and varying its speed slightly, and I could stall it by gripping the shaft tightly with my hand. (I have some grip strength, but usually gear motors with good torque win every time.)

So, live and learn. I knew to check the main motor, and to listen for smooth sounding bearings before buying a used saw. I also knew to check that the feed motor was turning, and that the clutch lever worked. I never thought to check that it was turning in the right direction. LOL.

New motor arrives Monday. I got a return on the split-nut. Except for the annoyance and delay in getting it set up, the saw looks in great shape and I did get it at less than 20% of what a new one costs.

From Daniel - October 11, 2010 at 08:41:28

Message: 69431



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