Restoring an old craftsman table saw - Page 2 - Woodworking Talk - Woodworkers Forum
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post #21 of 38 Old 07-05-2016, 03:48 PM
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In the picture that shows the motor hanging from the Bracket, it appears that the motor is actually mounted at an angle. I have the exact same problem with my 113 Series Craftsman 10" Table Saw. The Pulley side of the Motor appears to be closer to the cabinet than the non Pulley side by approximately 1/4 to 3/8 inch. None of the brackets appear to be bent or damaged. But I am at a loss as to how this motor is adjusted so the Motor shaft is parallel to the Blade Arbor. I just installed new pulleys and a Flex Belt, and I have aligned the pulleys as close as I can, but you can see the motor is crooked. I replaced the pulleys and belt to hopefully eliminate the motor pulley from constantly flying off, but I am wondering if this "crooked" motor is part of the reason the pulleys fly off.
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post #22 of 38 Old 07-05-2016, 04:31 PM
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There are 4 bolts ...

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Originally Posted by Bigtalldumbguy View Post
In the picture that shows the motor hanging from the Bracket, it appears that the motor is actually mounted at an angle. I have the exact same problem with my 113 Series Craftsman 10" Table Saw. The Pulley side of the Motor appears to be closer to the cabinet than the non Pulley side by approximately 1/4 to 3/8 inch. None of the brackets appear to be bent or damaged. But I am at a loss as to how this motor is adjusted so the Motor shaft is parallel to the Blade Arbor. I just installed new pulleys and a Flex Belt, and I have aligned the pulleys as close as I can, but you can see the motor is crooked. I replaced the pulleys and belt to hopefully eliminate the motor pulley from constantly flying off, but I am wondering if this "crooked" motor is part of the reason the pulleys fly off.


There are slots in the motor base and probably slots in the bracket ...all of which are used to get the 2 shafts parallel. Loosen all but 1 bolt and rotate the motor until you get the motor shaft level with the arbor shaft. Because of the weight type tensioning system, the majority of the motor weight is on the belt/pulley side, so it tends to lift that side higher. It's not the end of the world if you can't get them exactly parallel, because the belt will "adjust" for any mis-alignment.

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)
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post #23 of 38 Old 07-05-2016, 05:07 PM
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Thanks for your quick reply. I have aligned the motor by loosening the two Hex Bolts that hold the two (rusted) horizontal shaft pins, and pulling the pulley side of the motor while pushing on the non-pulley side as best as I could, then tightened the two hex bolts. I have a photo to post but I don't think the system allows me to post it. I'll try it.
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Last edited by Bigtalldumbguy; 07-05-2016 at 05:11 PM.
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post #24 of 38 Old 07-05-2016, 05:11 PM
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Here is the modified photo. As you stated the Flex Belt will help a lot. But it sure looks crooked and possibly causes the pulley to fly off from the axial force of the belt. Who Knows.
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post #25 of 38 Old 07-05-2016, 06:05 PM
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those bolts won't help this issue

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Originally Posted by Bigtalldumbguy View Post
Thanks for your quick reply. I have aligned the motor by loosening the two Hex Bolts that hold the two (rusted) horizontal shaft pins, and pulling the pulley side of the motor while pushing on the non-pulley side as best as I could, then tightened the two hex bolts. I have a photo to post but I don't think the system allows me to post it. I'll try it.
You want to use the 4 mounting bolts I mentioned above. That's what will allow aligning the shafts. :smile3:

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)
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post #26 of 38 Old 07-06-2016, 09:49 AM
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Thanks again for your reply. I truly appreciate your help, and I am not trying to be a pain or be argumentative, However, I guess I am not making my self clear or just not quite sure what you mean. So I will try to explain in a little more detail. Looking at the picture, my problem is not the alignment of the pulleys to the right and left, nor is the motor "Rotated" clockwise up or down. My problem is, the Blade Shaft arbor and the Motor Shaft are not parallel to each other, they are at an angle to each other. If I loosen the 4 bolts and slide the motor to the right or left, it is still at an angle to the Blade Arbor. Now, it seems to me that if I loosen the two (of the four) Motor Mounting Bolts on the right side and put a 1/4" to a 3/8" shim, while leaving the left two Motor Mounting Bolts as is, I might straighten the motor so it sits parallel to the Blade Arbor, or in other words, pulling the pulley side of the motor further away from the cabinet. I have read about number of people that own these Craftsman Saws that have the same problem with the pulleys flying off in the middle of a cut and thought this might be part of the problem.


Thanks again.


Rick
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post #27 of 38 Old 07-06-2016, 11:45 AM
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Here is a pictorial that I hope better shows this problem.
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post #28 of 38 Old 07-06-2016, 03:05 PM
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I wonder if the blade/pulley has pulled the end of the motor in a bit, bending the bracket over time? I would think that if you shim behind the bolts, the weaker metal of the bracket can still bend.

Perhaps shimming from the bracket to the frame of the saw to the right of the bolts so the bracket can no longer bend would be better?
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post #29 of 38 Old 07-06-2016, 03:06 PM
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plan view vs rear view vs 45 degree view

This photo is taken at a 45 degree angle ... approximately. It shows some of the back and some of the top.

Look directly down on the brackets and motor... plan view... and see if all the lines, plates and edges are parallel. If not, that's where your issue is.

Look directly at the whole assembly from the rear and see if motor is hanging crooked... of course it is. The 4 bolts I keep mentioning will allow you to adjust the motor on that bracket so it is parallel to the ground and the top of the saw when viewed from the rear.

I had a saw just like this one, and there will be some angle to the motor that you can't adjust out, but nothing as bad as shown. It would take a whole lot of lateral force on the belt to drive off a proper mounted pulley and keyway. Both should be a nice snug fit, nat loose, and not a "hammer" fit either.

That's about all you can do with this system in my opinion and that's about all the advice I have for you.
Hope it works out. :smile3:

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)
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post #30 of 38 Old 07-06-2016, 04:07 PM
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A million thanks for your time and responses, Woodnthings and Dan. Nothing really looks bent, but I agree that there must be some angle that you simply cannot adjust out other than doing some fancy Juryrigging with shims. I just replaced the original Aluminum cast pulleys with Machined Steel Pulleys and a Flex Belt from In-Line, along with new Set Screws and Keyway keys, and I hope I have put this problem behind me. Nothing gets your attention faster than loosing a Motor Pulley in Mid-Cut, and chasing it across the shop floor, and I know I am not the only one with this problem.


See you around.


Rick
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post #31 of 38 Old 07-15-2016, 09:03 AM
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Having had the same issue with an older delta I ended up discarding the original carriage bolts for the motor mount for a newer style bolt with waters and lock washers, this allowed me to get enough twist clockwise of the motor to align the shafts, I keep watching for movement by putting a scribe mark on the mount but so far it has`t moved...
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post #32 of 38 Old 07-15-2016, 03:05 PM
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Looks like the motor Base Plate is bent......no longer available from Sears. Maybe you can take it apart and straighten it in a vice. The non-pulley side of the motor needs to be twisted toward the front of the saw.
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post #33 of 38 Old 08-02-2016, 11:29 PM
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I have a question about the rail fence....I recently bought a table saw 113 series and it came in about 30 pieces. I have it all back together but the holes for the rails do not line up correctly (or at least how I think they should be.

What determines the layout?
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post #34 of 38 Old 08-10-2016, 08:58 PM
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The motor mount on that saw is very light sheet metal, and is not a robust design at all. I have the exact same "problem" with my saw. There are several ways to correct, or at least lessen the effects of the skew. One is to simply grab the motor and twist for all you are worth. May sound stupid, but I'll bet you can get most of it out that way (take the belt off the motor pulley first). Another trick is to shim the two mount bolts on the pulley side. It might take half a dozen washers under each bolt, but it'll eventually come around. The belt type and style will have no effect on the skew issue. Run whatever belt you want.

I'm serious about the grab and twist. It'll make a world of difference to the belt alignment... And if you have belts flying off pulleys, you need to fix it post haste! That failure could get dangerous very easily.

Cheers

Another $000,000,000.02 worth of advice,
Mark
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post #35 of 38 Old 08-10-2016, 09:56 PM
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A great job on the table saw restoration. A+.

If you don't have time to do it right the first time, when will you have time to do it over?
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post #36 of 38 Old 08-16-2016, 08:15 AM
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WOW! Can I say it again, what an awesome buy and nice restore. That saw will serve you well for many years. I also have an old Craftsman. Good choice on the new pulleys and belt from Inline. You may also want to consider the PALS kit also from Inline that makes aligning the saw so easy when necessary. Good luck with the saw and as always be safe.

Joe B. 41
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post #37 of 38 Old 05-31-2017, 09:14 AM
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I had this exact same problem so I ended up taking the motor and motor mount apart. The mount was actually cracked and when had the extra tension of the pulley on the motor, it would twist. So... now I'm fixing the mount.
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post #38 of 38 Old 06-01-2018, 09:45 AM
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Model

Could you please tell me the motor's model number?

Thank you

Thanh
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