Question about Grinders
Posted by Anonymous on
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Posted on Jan 02, 2017
Replacement should be simple. Just do a one for one hookup with the new part, after you unplug it first.
For a diagram go to;
Posted on Mar 28, 2009
I would suggest (just from you saying you dont know wireing that well) you should have someone else do it. But if you are determined white to white black to black(or red) make sure you are grounded and check amp to make sure you have the right breaker. I think you should get someone to help you as electrical fires are #1 on home fires .
I hope I helped
Posted on Dec 30, 2009
Clamp the shaft behind one wheel with 'Channelock' or 'Visegrip' pliers, then tighten both nuts. Check the new wheels for 'off-center' running by spinning them with your hand. They may fit the shaft tight enough that there is no centering adjustment--use a 'wheel dresser' (either a stone type or a multi-wheel type) to true up the wheel so that there is no radial wobble. Hope this helps!
Posted on Oct 23, 2010
Try wrapping a thin cord around the shaft many times to allow the shaft to be spun in the normal running direction when pulled. Pull sharply on the cord and turn the motor on--if the starting capacitor is bad, the motor should continue to run until shut off. If there is no capacitor, then the motor uses a start winding and a centrifugal switch to start. The switch is supposed to open when the motor comes up to speed. If you used to hear a loud 'click' when the motor was shut off and slowing down, then you likely have the start winding and switch. If the contacts on the switch become burned and not make contact, then it will display the symptoms you mention. You will need to access one or the other end covers to reach the switch. Hope this helps!
Posted on Jan 10, 2011
I have a CTT Taiwan made bench grinder that I bought at a yard sale for 20 bucks. The sellers told me it had a bad capacitor when in fact the centrifugal gadget that switches off the starter winding was simply out of adjustment, causing the motor to hum and not turn. It can be adjusted through the motor vent slot so you don't even need to take the end cap off. It works great, I upgraded the grinding wheels and comparable 1/2 hp models sell for over $90. Many grinders, and other motors are made with the centrifugal switch.
Fot the Craftsman guy, a 100 ufd 125V AC capacitor should do the trick. They're about $10 at your local appliance parts dealer.
And there are NO brushes in an induction motor.
Posted on Jun 28, 2012
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