Replacing Dewalt Mitre Saw brushes

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Forum topic by jcwalleye posted 10-27-2011 05:29 AM 5552 views 0 times favorited 6 replies Add to Favorites Watch
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306 posts in 3036 days

10-27-2011 05:29 AM

Has anybody here had success at replacing the brushes in a Dewalt Mitre saw?

I’ve got about a 15 year old DW703 that has recently stopped starting. You can spin the blade (power off of course) a few times and then it might start. Or whack the motor casing a few times and it might start. Because it has been so dependable I’d hate to throw it away, but then i don’t think it would be worth mailing in for repairs.
Any suggestions for getting the parts or putting them in? It might be double insulated for whatever that means.

In any event I’m probably in the market for a new saw, a slider this time. Dewalt’s new DWS780 12” looks pretty attractive, and doesn’t need a ton of rear clearance. Anybody have experience with it?


-- Trees, a wonderful gift --Joe--

6 replies so far

View PutnamEco's profile


155 posts in 3249 days

#1 posted 10-27-2011 06:40 AM

I would go to and order up the parts you need. It looks like a pretty straight forward replacement. You’ll have to remove a cover or two than free the old brushes before you can install the new ones. No reason to scrap a working tool over $20 in parts and an 1/2 hours work.
They have a forum on their website that possibly may provide more detailed information than I can supply from looking at an exploded diagram.

P.S. link is for DW703 type 1, there is also a type 3 listed, you’ll find this information on the tools ID plate.

I’m not a particular fan of Dewalt. The Bosch GCM12SD and Festools Kapex KS 120 are the top saws these days.

-- “The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little.” ― Franklin D. Roosevelt

View David's profile


198 posts in 2626 days

#2 posted 10-27-2011 04:19 PM

Ditto what PutnamEco said, I just ordered a set of brushes for my Dewalt 18V circular saw from them, cost me about $15 shipped. Couple of screws to pull the motor cover off and 15 minutes and you should be good to go.

-- Perilous to all of us are the devices of an art deeper than we ourselves possess. --Gandalf the Grey

View RetiredCoastie's profile


999 posts in 3146 days

#3 posted 10-27-2011 05:08 PM

The older ones are worth repairing as long as you can get the parts. I bought my DW compound miter saw just before B&D bought DW and my saw is bullet proof. I wouldn’t trade it for any of the new ones.

-- Proud Supporter of Homes For Our Troops

View patcollins's profile


1683 posts in 2828 days

#4 posted 10-28-2011 02:24 AM

That might not be the brushes needing replaced, a partially shorted armature can act like that too.

You also may be able to find replacement brushes at ace hardware in the little bins of stuff, I found replacement brushes that fit a Dumor grinder there before. There are only a few different standard sizes of brushes.

View Strickster's profile


15 posts in 453 days

#5 posted 03-09-2017 01:52 AM

Just bought a new dewalt dws779 scms. I’ve only cut about one 2×4 just trying it out and it smells funny. Everything works great. Could it be its just new and the brushes aren’t broken in yet?

View dhazelton's profile


2753 posts in 2259 days

#6 posted 03-09-2017 12:53 PM

I had an electric chainsaw that stopped working. I ordered brushes and a new switch just in case. It was not a fix. I pulled it apart further and found a cracked solder joint on a wire leading to the motor.

I’d take the unit apart before you buy anything. Test the switch with a meter for continuity etc.

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