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Planer motor running erratically, Bad Brushes?

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Forum topic by Blackie_ posted 09-04-2013 10:39 PM 645 views 0 times favorited 11 replies Add to Favorites Watch
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Blackie_

3391 posts in 1164 days


09-04-2013 10:39 PM

I have the Ryobi AP 1301 have had it for several years, just a couple days ago I noticed the motor starting fluctuating, pulsating, losing power gaining power running erratically, acting like it’s trying to go out, so I’m wondering if brushes going bad can cause this?

Thanks

-- Randy - If I'm not on LJ's then I'm making Saw Dust. Please feel free to visit my store location at http://www.facebook.com/randy.blackstock.custom.wood.designs


11 replies so far

View crank49's profile

crank49

3421 posts in 1623 days


#1 posted 09-04-2013 11:25 PM

Yes, it is possible for bad brushes to cause the problem you described.
Unplug the planer, and then unscrew one of the brush retainers, then pull out and inspect one of the brushes.
Then check the other side. It is not hard to do.

-- Michael :-{| “If you tell a big enough lie and tell it frequently enough, it will be believed.” ― A H

View Jim Jakosh's profile

Jim Jakosh

11423 posts in 1757 days


#2 posted 09-04-2013 11:43 PM

Check the brushes. what happens is build up of dirt and carbon at the end which holds them away from the armature just a bit and then they arc and soon quit if not cleaned out.
LJ Rustic had that happen to his HF lathe and Craftsman table saw last week!

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

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HillbillyShooter

4565 posts in 944 days


#3 posted 09-04-2013 11:45 PM

Agree with Jim J. Also, make sure the brushes are not burned too short.

-- John C. -- "Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth." George Washington

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DocSavage45

4981 posts in 1494 days


#4 posted 09-05-2013 12:05 AM

If that’s not the fix then bearings, belts, and starting capacitor? Step at a time.

-- Cau Haus Designs, Thomas J. Tieffenbacher

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Roger

14556 posts in 1456 days


#5 posted 09-05-2013 01:54 AM

Good luck with the fix

-- Roger from KY. Work/Play/Travel Safe. Kentuk55@bellsouth.net

View Blackie_'s profile

Blackie_

3391 posts in 1164 days


#6 posted 09-05-2013 02:30 AM

I ordered the brushes lets hope they fix the problem, thanks for the replies and the help all.

-- Randy - If I'm not on LJ's then I'm making Saw Dust. Please feel free to visit my store location at http://www.facebook.com/randy.blackstock.custom.wood.designs

View crank49's profile

crank49

3421 posts in 1623 days


#7 posted 09-05-2013 02:40 AM

That saw has a universal, series wound motor, so there is no starting or running capacitor.

-- Michael :-{| “If you tell a big enough lie and tell it frequently enough, it will be believed.” ― A H

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Blackie_

3391 posts in 1164 days


#8 posted 09-09-2013 04:38 PM

Set of new brushes fixed the problem, thanks again all.

-- Randy - If I'm not on LJ's then I'm making Saw Dust. Please feel free to visit my store location at http://www.facebook.com/randy.blackstock.custom.wood.designs

View Tim's profile

Tim

1267 posts in 613 days


#9 posted 09-09-2013 06:04 PM

Did you save the old ones? I don’t know anything about this motor, but sometimes it’s just a matter of the end of the brushes having uneven wear and they don’t contact enough. You can take the old ones out and if there’s still enough material, even out/flatten the contact end and reinstall and they will work better.

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Blackie_

3391 posts in 1164 days


#10 posted 09-09-2013 10:49 PM

Tim I compared the old with the new ones and that was quite a bit of difference in ware, I’ve already thrown them away.

-- Randy - If I'm not on LJ's then I'm making Saw Dust. Please feel free to visit my store location at http://www.facebook.com/randy.blackstock.custom.wood.designs

View crank49's profile

crank49

3421 posts in 1623 days


#11 posted 09-10-2013 05:22 PM

It’s good to run those new brushes for a while with no load on them. Gives them a chance to conform to the shape of the armature.

-- Michael :-{| “If you tell a big enough lie and tell it frequently enough, it will be believed.” ― A H

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