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old Dewalt radial arm saw

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Forum topic by paramedpete posted 06-10-2009 11:07 PM 1784 views 0 times favorited 9 replies Add to Favorites Watch
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paramedpete

4 posts in 2732 days


06-10-2009 11:07 PM

I have an old dewalt radial arm saw (around 59). its the same as the one the gentleman refurbished on this sight. it belonged to my grandfather and it was working then the motor just quit (it was under load when it happened), and the reset button wont work. its getting power in and out ouf the reset button nut wont activate the contacts. The capacitor appears good too with good continuity thru it….. Can anyone help????

thanks, Pete


9 replies so far

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SCOTSMAN

5839 posts in 3045 days


#1 posted 06-10-2009 11:14 PM

It may just need to be stripped down and cleaned,as these saws usually never get a through cleaning for years and get clogged up in the motor housing.After all it is better to try that than throwing it out. I am wary of the old ,old ,radial arm saws and cut off saws bec ause they tend not to have original guarding with them .Even if they do, guarding then is not up to todays standards.I see them often used without guards.It sends a shiver down my spine I wish you success but please friend be careful.Alistair

-- excuse my typing as I have a form of parkinsons disease

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lew

11334 posts in 3215 days


#2 posted 06-10-2009 11:18 PM

Good capacitors do NOT have continuity! they read OPEN on an ohmmeter.

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

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paramedpete

4 posts in 2732 days


#3 posted 06-10-2009 11:22 PM

good point on the capacitor, not to sauvy on electronics, where can i find one if i need it.

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paramedpete

4 posts in 2732 days


#4 posted 06-10-2009 11:24 PM

Alistar, your typing is better than mine, no worries, I will be careful. Thanks a million

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lew

11334 posts in 3215 days


#5 posted 06-10-2009 11:25 PM

Any motor repair shop will have them in stock. Take the old one so you get the correct value and same connector type. The replacement may not be the same size physically- probably smaller- so you may have to engineer a new clamp or mounting device.

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

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paramedpete

4 posts in 2732 days


#6 posted 06-10-2009 11:30 PM

Outstanding, thanks for the tips, will I beable to get the rest of the guts there also??

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SCOTSMAN

5839 posts in 3045 days


#7 posted 06-10-2009 11:34 PM

yes sometimes it get’s bad depending on the state of meds I am on .Alistair

-- excuse my typing as I have a form of parkinsons disease

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lew

11334 posts in 3215 days


#8 posted 06-11-2009 03:31 AM

Motor repair facilities usually carry what you will need, especially for motors that are older or very common.

It almost sounds as if the starting contactors are dirty. Have you tried blowing compressed air into the ends of the motor? I had an older sears radial arm that would not start- on a regular basis. I would blow air into the grills on the shaft ends of the motor and that usually fixed the problem

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

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CutNRun

122 posts in 3305 days


#9 posted 06-11-2009 03:53 AM

You can also pull the motor apart yourself and clean it out. The instructions can be found at

http://wiki.owwm.com/DeWaltMBFMotorBearings.ashx

This is actually if you want to replace the motor bearings, but I simply took mine apart to give it (and the bearings) a good cleaning.

-- CutNRun - So much wood, so many trails, so little time

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