Post by garock on Nov 10, 2014 18:35:36 GMT -5
Where do I start. I done a neighbor a favor and cut some glass wine bottles for her in the saw. Had to be careful not to put to much pressure on the bottle with the rock clamp. Started the saw up and it started cutting but started making a strange noise. I stopped and checked and the bottle had moved at an angle and the cut was awful. Repositioned the bottle and so it would not move. I was listening to the blade like I do when cutting rock and figured when I did not hear any more cutting of the blade I would be ok. Noise stopped just before I cut off saw, smoke came pouring out where the feed motor is located. Jerked the plug out quickly. Well . . . . ! Burned up the feed motor I figured. Upset so I just left it until today. Removed the motor, took apart. I had another feed motor but not exactly a direct replacement. I started "ciphering" how I could interchange the parts. Took my ohmmeter and checked the spare motor winding and it read good. I then checked the winding of the bad motor and it read ok. I reckon I was a lucky fellow ! Put the old motor back together and remounted and using a suicide cord, I ran the motor. Running Great ! I am a happy fellow now. I let it run awhile, but something did not seem just right. My mind was ciphering away. Ciphering, chiphering, hay wait a minute the feed is running in the wrong direction. No can't be. No way you can reverse this kind of ac motor. Unplugged motor and studied this awhile, again "ciphering". I wonder if I reverse the way the coil assembly was mounted not realizing what I had done. Took apart again, reversed the way it was mounted, reassembled and tested again. Going in the right direction. Found two more problems. My saw blade had dished when the bottle had moved. I was checking how easy the blade would be turning by hand and noticed a hard spot while turning. I realized my motor has a bad rear bearing. Bad luck now. I do have another motor to replace it with. Also noticed the bushing at the front of the threaded rod was wearing out and will need replacing. I only gave 125 dollars for it originally and replaced the two bearing that holds the blade shaft. So now I have some replacing to do. It had done a lot of cutting for me in the past 12 years so I can't complain. I do now know you can reverse the directions of those type motors. At least I "learnt" something new about motors !