Makita 9227 Maintenance

PrinzII · 04-03-05, 02:35

I read the manual to the 9227 and found a section which states that the carbon brushes have to be changed every now and then. I was wondering if anyone's had that done and if there were any undesirable aftereffects.

Eliot Ness · 04-03-05, 08:08

It's the nature of a carbon brush that it will eventually wear down after "X" hours of use (they're designed to do so). While I can't speak specifically for the Makita, I've never seen an "undesirable effect" from replacing motor brushes, and I've done hundreds over the years. As long as the correct brushes are used the only problem would stem from incorrect disassembly/assembly.

PrinzII · 04-04-05, 04:35

Perfect! That's what I needed to know.

klnyc · 04-11-05, 07:50

How much is the motor brush? Anway?(Lowes,HD)

paco · 04-11-05, 08:18

In speaking the Makita service center here in Mississauga, ON.

99% of all their services to the 9227 is from the Marble/Granite installers! Due to all the dust and hard use that the contractor's put it through, it requires servicing quite a bit. However, if they simply blow them out with compressed air, the service number would be greatly minimized.

They rarely repair one from the Automotive industry. The one's they due are typically detailers who use wool pads a lot and the little fibers get drawn into the housing; which leads to a lot of heat and premature failure. If they simply blew some compress air into the unit every once in a while, there wouldn't be a need to ever service it.

It's pretty much a tank for how the majority of users on this board detail with it.

Paco

klnyc · 04-11-05, 12:49

Are we talking about the brush that in the body part...not inside the motor. That little knob on the size, where u can turn with a flat head screw driver? I want to make sure that's what we are talking about.

Shaun Carollo · 04-11-05, 06:38

Quote:

Originally posted by klnyc
Are we talking about the brush that in the body part...not inside the motor. That little knob on the size, where u can turn with a flat head screw driver? I want to make sure that's what we are talking about.

Correct me if I, and klnyc are wrong, but I think they are the motor brushes.

-Shaun

holland_patrick · 04-11-05, 06:55

those are the motor brushes. Yes they may need to be changed but I don't think you'll have to change them. I used to race elec. RC cars and changed brushes when i needed a change in proformance. We had slotted cot and a bunch of other designs for brushes.

Burlyq · 04-11-05, 07:06

I've done 100's of detailes and never replaced any brushes. When the machine stops working right I will look at that maintenance stuff.

klnyc · 04-11-05, 07:37

Quote:

Originally posted by Shaun Carollo
Correct me if I, and klnyc are wrong, but I think they are the motor brushes.

-Shaun

Hah, I was talkin' about the carbon brush...I guess mis-understood you guys. So, how long this "carbon brush" before it wear out?

See page 11
http://www.makitatools.com/res_tools...als/9227CY.pdf

Eliot Ness · 04-11-05, 11:42

Quote:

Originally posted by klnyc
Hah, I was talkin' about the carbon brush...I guess mis-understood you guys. So, how long this "carbon brush" before it wear out?.......

The carbon brushes are the motor brushes. If you look at the page you mentioned, notice that they have a "wear mark" at which point they recommend replacing them. Since your Makita is new just take one out and measure it, then check it again next year to see how much it has worn down. Unless you are a pro using this on a daily basis my guess is you may never have to replace them.

klnyc · 04-12-05, 06:08

Yup, I took it out. I guess this will last pretty long time.