All Replies on DeWalt model 1400 radial arm saw motor won't turn

  • Advertise with us
View mcoulton's profile

DeWalt model 1400 radial arm saw motor won't turn

by mcoulton
posted 11-12-2018 09:20 PM

4 replies so far

View mpsprunger's profile


34 posts in 2669 days

#1 posted 11-12-2018 11:38 PM

The box on top, probably contains a cap, and a potential relay. The relay opens when the energy from the turning rotor is enough to energize the coil in the relay. Then it switches to the run cap. Mine had a 3 hp motor, the fellows, at the shop, connected it to 220 the wrong way w/out using the magnetic contactor and burned up the start windings. it died

View MrUnix's profile (online now)


8162 posts in 3007 days

#2 posted 11-12-2018 11:54 PM

Without any other info, you are probably not going to get more than guesses. Does the arbor spin freely when turned by hand? It could be a bad cap, which is easy to test with a multimeter in resistance mode… but it should not have fried in the middle of running. Doing so could be due to a faulty centrifugal switch stuck closed. IIRC, those models also have a blade brake, which may have malfunctioned… or you could have had a catastrophic bearing failure.

Too many possibilities, too little information. You are going to have to open it up and do a little diagnostics in order to narrow it down.


-- Brad in FL - In Dog I trust... everything else is questionable

View mcoulton's profile


2 posts in 638 days

#3 posted 11-13-2018 04:07 AM

i found that it tripped the gfi.

When i reset it , there is a humming when you hit the power but the motor does not spin.

i see that it has a mallory 200-240MFD 110 VAC

i am attaching a file

View Fred Hargis's profile (online now)

Fred Hargis

6322 posts in 3301 days

#4 posted 11-13-2018 11:46 AM

You probably just need to replace the capacitor. Take that one with you to a motor shop (or industrial supply) and get a replacement. Should cost less than $20. Taking it with you is. good idea because some of them might be a little larger in size and not fit so snugly in the box.

-- Our village hasn't lost it's idiot, he was elected to congress.

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics