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Rebuilding a vintage Craftsman Table Saw 113.29920 #3: Cleanup and motor breakdown

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Blog entry by KTMM (Krunkthemadman) posted 10-11-2010 05:58 AM 4496 reads 1 time favorited 3 comments Add to Favorites Watch
« Part 2: The thinking phase..... Part 3 of Rebuilding a vintage Craftsman Table Saw 113.29920 series Part 4: Know where your tools are and know when the right tool is in front of you... »

Ok guys there are some pictures of the table top before and after my cleaning session. Aside from that, most all of the small parts have been Evaporusted. The top is not as nice as I want it, but I’ll get it there eventually.

See the pictures here....

Now to the dilemma. I broke down the motor and was rather frightened at what I found. The motor was in great need of cleaning as I dumped almost 2 cups of sawdust out of it without any scrubbing. For some reason impacted sawdust and electrical current seem like a bad mix to me. The dilemma I face now is whether to replace or rebuild the motor. I can most likely rebuild the motor myself, I’m going to make a couple of calls tomorrow and see if I can get the parts for it. The capacitor appeared to have a small crack in it, which could be a problem in the future. Also, the wires in the motor appear to have dry rotted insulation on them.


On the other hand, I could just get a replacement motor. I know this would be more expensive, but it might be worth while…...

Sorry there aren’t any pictures of the motor breakdown. Till next time…...

Update from tonight…..

I talked to a buddy who used to do a lot of industrial work on electric motors. His advice was to swap the bearings on the motor and run it till it burns up. With that in mind I contacted my uncle and had him order the motor bearings for me. I did learn after a bit of reading that it’s a good idea to use a punch and mark the motor bells BEFORE dis-assembly. It’s also a good idea to take pictures of where wires are connected BEFORE de-soldering them. Oh well, I’ll figure out how it all goes back together soon enough.

Today I did get a chance to price a quality replacement motor for the saw. Prices range from $150 to $300 for a quality motor. That compared to about $15 bucks and a good dusting to get this motor in good shape seems like a deal to me.

-- Practice does not make perfect. Only perfect practice makes perfect. Vince Lombardi



3 comments so far

View DenverDave's profile

DenverDave

41 posts in 1599 days


#1 posted 10-11-2010 07:08 AM

Those old saws are like works of art. I have one made around 1950.

View William's profile

William

9276 posts in 1591 days


#2 posted 10-11-2010 08:17 PM

If it is possible to rebuild at a reasonable price and you have the knowhow to do it, I woulddefinately rebuild the old motor over buying a new one. If nothing else, just for the sake of keeping it original.
However, if by chance you do decide to go with the new motor route, are you going to keep the same horsepower rating or go a little bigger? I do not know the ramifications of going with a higher output motor but can’t help but think it’s somthing that may be worth checking into. Maybe someone else here has done the same and went bigger and can give some input?

-- http://wddsrfinewoodworks.blogspot.com/

View HokieMojo's profile

HokieMojo

2103 posts in 2476 days


#3 posted 10-12-2010 04:19 AM

I wish I had advice. Unfortunately, I’m mostly learning from how you overcome these obstacles. A motor replacement is definitely not a cheap option though.

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