Table Saw Motor dying.

[lonelytree]

Hi Folks,
   I have a 10" Craftsman table saw. Older unit with the belt drive and motor hanging on the aft end. I am ripping a lot of material. When the motor gets hot it stalls. Hums without rotating. I tool the belt off and it IS the motor. Any ideas? I really don't want to buy a $300 motor right now.

Could it be something easy like a capacitor?

It has oil holes..... what type of oil and how much?

Any troubleshooting advice?

Model - 113.298720
S/N - 87270P0065

Thanks!
Mike

[MountainDon]

Can you turn the shaft by hand when it doesn't want to run itself? Power should be off to try that.

I had an old motor that was ventilated and it would clog up with sawdust. I'd blow it out with the compressor every so often.

If you haven't oiled the oil holes that might help.  

All about lubricating electric motors...
http://www.wvu.edu/~exten/infores/pubs/ageng/epp3.pdf
I doubt that much has changed since that was written in the sixties.


I've seen small cans of electric motor oil at my local hardware store. Probably nothing special about it other than being a light oil and being marketed for that purpose.  

[John Raabe]

I find I have an old 3 oz metal can of "3 in 1" oil in my workshop. It is for use on things like sewing machines "or anywhere a light oil in needed".

[Don_P]

How many capacitors? If it has a pair is one marked "start" and the other marked "run"?
If you buy a replacement motor make sure it is reversible or spins in the right direction...umm, don't ask  .
Also avoid the temptation to put a heavier motor on it, the trunnions aren't built for the load... she refers to it as testosterone poisoning 

[NM_Shooter]

Do you have access to a motor shop?  If one of the older Sears models, I bet it can be rebuilt.

[lonelytree]

Hey Guys,
 I appreciate all your posts and tok them to heart. I took my motor into a shop. It is not rebuildable. The sleeve bearings had too much play. He didn't have a relacement either. $320 was a bit steep too. He winked and sent me to Grainger. I picked up a 5TB71 for $212.75 after 2 hours of searching etc.... It fits great and even spins in the correct rotation. I could not find a cord at Grainger, so I used the old one. I may pick up a cord at a box store as mine is old and a bit brittle. Saw is up and running.

After trying to cut some thicker material, I discovered that the motor was not enough HP to preform. I ended up purchasing a new saw from Sears. ;(


Thanks!
Mike