|Forum topic by ADHDan||posted 01-05-2015 06:35 PM||2502 views||0 times favorited||23 replies|
01-05-2015 06:35 PM
I picked up a Craftsman 12” bandsaw, model 119.224000, in excellent condition for $100. After installing a new Timber Wolf blade it was working great for a while, then suddenly it started making a racket and then froze up. I checked the bottom compartment and discovered that the pulley on the motor shaft had come loose and was rubbing/locking against the wheel. So I pushed the pulley back on the shaft and tightened the set screw, which seems to be the only thing that holds the pulley in place on the shaft (but if I’m wrong about that, PLEASE let me know). Worked fine for a day or so, then the pulley came loose again. I tried tightening it one more time, and again it came loose.
So I’m wondering – what’s the likely problem, and what’s the likely fix? Is a single set screw typically the only thing holding the pulley on a bandsaw motor shaft? Should I try finding a new set screw? Could the problem be that I didn’t have that pulley properly aligned with the other pulleys driving the saw? Or could overtightening the set screw be a problem? This is my first bandsaw, and I’m pretty much stumped as far as troubleshooting goes.
Also, I haven’t taken off the lower wheel when doing these repairs, so it’s certainly possible that I misaligned the pulleys. Do I need to take the lower wheel off for better troubleshooting? It looks like it’s held on with a c-clip, so I’d need to pick up the proper sized c-clip pliers to remove the wheel.
I can take pictures tonight if that would be helpful. Thanks for any advice!
p.s. Is the pulley connected to the motor shaft called a drive pulley, a motor pulley, or something else?
-- Dan in Minneapolis, woodworking since 11/11.