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Planer motor running erratically, Bad Brushes?

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Forum topic by Blackie_ posted 309 days ago 578 views 0 times favorited 11 replies Add to Favorites Watch
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Blackie_

3256 posts in 1096 days


309 days ago

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

3323 posts in 1555 days


#1 posted 309 days ago

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

10951 posts in 1689 days


#2 posted 309 days ago

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!!

View HillbillyShooter's profile

HillbillyShooter

4260 posts in 876 days


#3 posted 309 days ago

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

View DocSavage45's profile

DocSavage45

4679 posts in 1426 days


#4 posted 309 days ago

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

-- Cau Haus Designs, Thomas J. Tieffenbacher

View Roger's profile

Roger

13946 posts in 1388 days


#5 posted 309 days ago

Good luck with the fix

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

View Blackie_'s profile

Blackie_

3256 posts in 1096 days


#6 posted 309 days ago

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

3323 posts in 1555 days


#7 posted 309 days ago

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

View Blackie_'s profile

Blackie_

3256 posts in 1096 days


#8 posted 304 days ago

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

1125 posts in 545 days


#9 posted 304 days ago

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.

View Blackie_'s profile

Blackie_

3256 posts in 1096 days


#10 posted 304 days ago

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

3323 posts in 1555 days


#11 posted 303 days ago

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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