10-25-2015, 12:49 PM
The large fastening nut for the grinding wheel that's got the damaged holes is easily fixed...if you can get it off. As Tom suggests it's important to determine if it's a left or right hand thread before you start wailing on it, most likely left but I've seen opposite too. Once off, you might fill the bad holes but I wouldn't risk warping it. I'd just drill 4 new holes 45º away.
BTW, if you can find a way to grip it, perhaps first get the entire wheel arbor off by removing the socket head cap screw in the center and see what it takes to get it off the spindle taper and then work on getting the wheel off the arbor. remove the socket head cap screw and you should see some means to insert/screw in some type of puller.
BTW, if you can find a way to grip it, perhaps first get the entire wheel arbor off by removing the socket head cap screw in the center and see what it takes to get it off the spindle taper and then work on getting the wheel off the arbor. remove the socket head cap screw and you should see some means to insert/screw in some type of puller.