collinb Posted March 24, 2016 Report Share Posted March 24, 2016 Craftsman 113.298761 The pulley keeps coming out. I've tightened down the set screw, even added Loctite. Still this continues. (Previous owner must have had the same problem. The reason I could get a good pic is b/c a nice access hole was cut into the side.) This is my 3rd arbor. How would one even approach diagnosing this? EDIT: So far the only thing I've come across is to replace the pulleys and it appears that it's almost a "feature" of these models.http://lumberjocks.com/reviews/1582#comments Quote Link to comment Share on other sites More sharing options...
Janello Posted March 24, 2016 Report Share Posted March 24, 2016 Where are you getting the set screws from? I believe there are a few different tips on set screws. Some are flat, some tapered etc. I'm grabbing at straws here, but if the threads are good on the pulley, I can't think of any other reason it would loosen over time other than the wrong type of set screw. 1 Quote Link to comment Share on other sites More sharing options...
collinb Posted March 24, 2016 Author Report Share Posted March 24, 2016 1 minute ago, Janello said: Where are you getting the set screws from? I believe there are a few different tips on set screws. Some are flat, some tapered etc. I'm grabbing at straws here, but if the threads are good on the pulley, I can't think of any other reason it would loosen over time other than the wrong type of set screw. They're all the same so "stock" seems a safe assumption. It *might* all be me: For lack of knowledge the saw goes bonkers. What I've read so far is that a combination of pulley alignment and the nature of cast pulleys, both create vibration that *can* do this. Alignment seems the first thing to check. Steel pulleys seems prudent, and they're not very expensive to purchase. The time question: It only takes about 10 minutes to work loose. It happens quickly. Quote Link to comment Share on other sites More sharing options...
wdwerker Posted March 24, 2016 Report Share Posted March 24, 2016 Is the motor at an angle to the arbor or perfectly parallel ? Have you ever thought to move along and step up to a better saw? I had a cast iron top old craftsman saw back in the early 80's and replaced it with my first UniSaw. Still using that UniSaw today. Quote Link to comment Share on other sites More sharing options...
Eric. Posted March 24, 2016 Report Share Posted March 24, 2016 I had the same issues on my Grizzly jointer...maybe @Cliff can tell you how they finally resolved it. All I can say is...as soon I'm working ON a machine more than I'm working WITH a machine...buh-bye. Life's too short. 2 Quote Link to comment Share on other sites More sharing options...
collinb Posted March 24, 2016 Author Report Share Posted March 24, 2016 2 minutes ago, wdwerker said: Is the motor at an angle to the arbor or perfectly parallel ? Have you ever thought to move along and step up to a better saw? I had a cast iron top old craftsman saw back in the early 80's and replaced it with my first UniSaw. Still using that UniSaw today. To your first question, that's the alignment concern that I'll be checking. To the second, yes. Since I've got a nice fence on it, it could be sold for probably $200 to $250. A used replacement of the next higher grade looks to be in the $500 to $700 range, at least around here. Here's one hybrid local to me though I'm uncertain about having a granite top: http://columbus.craigslist.org/gms/5488087034.html And a Unisaw: http://columbus.craigslist.org/tld/5464460960.html Yet I could get a new saw for not much more: http://www.grizzly.com/products/10-Hybrid-Table-Saw/G0771 Quote Link to comment Share on other sites More sharing options...
Cliff Posted March 24, 2016 Report Share Posted March 24, 2016 I "fixed" it by replacing the pulley, the set screw and the key. In the Grizzly that I have (and Eric used to have) the shaft has some sort of wobble that over time degraded the nice tight fit in the aluminum pulley. A new one fit very tightly. There was also room for two set screws when it only had one before so I put two in cause why not. Did this fix it? Yes and no. It fixed the current problem of the loud rattling. But the motor is still off and will need to be replaced. I don't know when. Hoping for a period of a couple of years. I also replaced all bearings in the machine as they were worn. 1 Quote Link to comment Share on other sites More sharing options...
Llama Posted March 24, 2016 Report Share Posted March 24, 2016 I'd check the pulley and the motor shaft alignment, then check for runout. It is possible you ran across bad pulleys, they should be a relatively tight fit. Quote Link to comment Share on other sites More sharing options...
Just Bob Posted March 24, 2016 Report Share Posted March 24, 2016 It looks like that pulley is set up for a woodruff key, is there a matching channel on the motor shaft? If so are you missing the key? If not, is it the wrong pulley? Quote Link to comment Share on other sites More sharing options...
..Kev Posted March 24, 2016 Report Share Posted March 24, 2016 31 minutes ago, collinb said: To your first question, that's the alignment concern that I'll be checking. To the second, yes. Since I've got a nice fence on it, it could be sold for probably $200 to $250. A used replacement of the next higher grade looks to be in the $500 to $700 range, at least around here. Here's one hybrid local to me though I'm uncertain about having a granite top: http://columbus.craigslist.org/gms/5488087034.html And a Unisaw: http://columbus.craigslist.org/tld/5464460960.html Yet I could get a new saw for not much more: http://www.grizzly.com/products/10-Hybrid-Table-Saw/G0771 For 700 you could have a new saw.. Quote Link to comment Share on other sites More sharing options...
collinb Posted March 24, 2016 Author Report Share Posted March 24, 2016 Just now, TIODS said: For 700 you could have a new saw.. That's about what I've found. But *if* I can fix this one up for just *another* $30, why spend $700. What I don't want to do is either (1) spend as much time resetting things as working or (2) spend $25 - $50 here and there, ever few of months, trying to make it "right" when it never will be or when I don't have the mechanical skills to accomplish the goal. Quote Link to comment Share on other sites More sharing options...
..Kev Posted March 24, 2016 Report Share Posted March 24, 2016 Just now, collinb said: That's about what I've found. But *if* I can fix this one up for just *another* $30, why spend $700. What I don't want to do is either (1) spend as much time resetting things as working or (2) spend $25 - $50 here and there, ever few of months, trying to make it "right" when it never will be or when I don't have the mechanical skills to accomplish the goal. The time you invest is also worth something. My belt/disc sander went TU the other day. Yes, I'll pull it apart and see if it's something simple. But, it's only going to get about 10 minutes of my time before it's gone and replaced! Quote Link to comment Share on other sites More sharing options...
RichardA Posted March 24, 2016 Report Share Posted March 24, 2016 I have the same saw, and had the same problem, I replaced the pulley, the key, and realigned the motor to the internal pulley, and so far, it's working fine. The pulley and key are less than $20, and stock items at any hardware store! The alignment takes some patience, but it's easy enough! Quote Link to comment Share on other sites More sharing options...
collinb Posted March 24, 2016 Author Report Share Posted March 24, 2016 4 hours ago, RichardA said: I have the same saw, and had the same problem, I replaced the pulley, the key, and realigned the motor to the internal pulley, and so far, it's working fine. The pulley and key are less than $20, and stock items at any hardware store! The alignment takes some patience, but it's easy enough! Nice to know I'm not alone. How long ago was it you did this? Looks like I should order the machined steel pulleys. They're cheap enough. I don't think my local hardware store has the pulleys (steel ones) though I know they have the keys, and yes they're quite cheap. Quote Link to comment Share on other sites More sharing options...
AceHoleInOne Posted March 24, 2016 Report Share Posted March 24, 2016 Yes and once the new pulleys are installed. Toss that belt and use a good belt that fits the groove properly. Not a fan of those "red" one size fits all belts. -Ace- Quote Link to comment Share on other sites More sharing options...
RichardA Posted March 24, 2016 Report Share Posted March 24, 2016 34 minutes ago, collinb said: Nice to know I'm not alone. How long ago was it you did this? Looks like I should order the machined steel pulleys. They're cheap enough. I don't think my local hardware store has the pulleys (steel ones) though I know they have the keys, and yes they're quite cheap. Had the problem about a year ago, no problem since, didn't even use Loctite on the set screw! Quote Link to comment Share on other sites More sharing options...
wdwerker Posted March 24, 2016 Report Share Posted March 24, 2016 I just remembered that I replaced both pulleys with machined steel ones and the saw behaved much better. Shimming the motor to get the pulleys parallel helped too. Quote Link to comment Share on other sites More sharing options...
knotscott Posted March 25, 2016 Report Share Posted March 25, 2016 I've heard of situations where there are actually two set screws in the hole....tightening one doesn't help much in that case. Pull it all the way out, and check if there's another one in there. 1 Quote Link to comment Share on other sites More sharing options...
Pete Staehling Posted March 25, 2016 Report Share Posted March 25, 2016 On 3/24/2016 at 9:01 AM, Just Bob said: It looks like that pulley is set up for a woodruff key, is there a matching channel on the motor shaft? If so are you missing the key? If not, is it the wrong pulley? Did you say whether there was a woodruff key? Or a channel for one in the shaft? That seems like a pretty standard feature in this application and not using a proper key in the key way would explain the problem. Quote Link to comment Share on other sites More sharing options...
Robby W Posted March 26, 2016 Report Share Posted March 26, 2016 Hi, Colin - I had a similar problem with my Rockwell pre Delta contractors saw. It had cast pulleys and the bore wore out. I went down to the local bearing supply house and got a couple of machined steel pulleys surprisingly cheap. Lined everything up and it has been good ever since. I do use a link belt. Quote Link to comment Share on other sites More sharing options...
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