G110 Failure

[Tundra 5-0]

I bought my G110 a little over a year ago. Yesterday I was detaling a car when it stopped. I have a pretty good understanding of electric motors so I got home and disassemble my polisher. This is what I found. The armature had a severe amount of carbon build up.


I cleaned the armature with some 400 grit sand paper (I did not have any thing finer lying around).

Only one of the brushes had carbon build up, but I dont know if it was the positive or the negative.
The pic is blurry, but

After reassembly the polisher worked better than new.
I trying to find out if this is due to lack of power going to the polisher (aka ext cord, or outlet) or if these brushes have been updated.
Also one brush is worn pretty bad and where can I buy new ones?
Thanks, Jeff

[Nappers]

Re: G110 Failure

Not sure where to buy new brushes, my local ace hardware has an assortment of brushes and one of those may fit

As far as power cords go.....

My dad is a long time electrician and uses a lot of power tools, he says use a larger than needed extension cord for your power tools or you will burn your tools up. He's been in the industry for 40+ years.....I use a 12 gauge extension cord for my power tools and have not had a problem, even with my cheapo Harbor Freight rotary, the brushes are wearing normal on that.

If you find brushes, let us all know!

Keep us posted!

[Tundra 5-0]

Re: G110 Failure

I was hoping someone from Mequiars would chime in. I would think they can get parts for the G110. I have never seen brushes for an electric motor at a hardwhere store, but I believe these are the same as the Porter Cable. If so I can try their brushes because they are the only ones I have found.

[Mike Phillips]

Re: G110 Failure

Moved this to the Customer Service Hotline forum group. Anytime a new thread or post is posted to this forum group our Customer Care Team is notified. That doesn't happen with the other forum groups.

Last I checked there was no program for replacement parts for the end-user, I'm sure Customer Care will chime in and explain what to do.

[Mike Phillips]

Re: G110 Failure

I was hoping someone from Meguiar's would chime in.

We're here, not sure how we missed your first post at the time it was posted... sorry about that...

[Tundra 5-0]

Re: G110 Failure

Thanks, I'm willing to pay for two brush assemblies. Also just wanted to see if there is a preventive measure.

[Tundra 5-0]

Re: G110 Failure

I started to read through some of the failure threads and see a common link. The polisher slows down and then just quits. This is what mine did. My fix will work for anyone who's polisher is out of warranty. There seems to be a power issue. The day mine quit I was not using my normal ext cord. It gave out on my second car (I had 2 detail jobs that day) and the home owner was also having problems with his outlet. My normal ext cord is a heavier guage. Also make sure everyone is keeping their ext cords as short as possible. The electric motor demands alot of power to run as long as they do. For example a saw only runs for a couple of seconds, these polishers are running for 5, 7 and maybe 10 mins at a time. They are pulling alot amps. I have a feeling this is what happened to mine. The polisher's are repairable with a quick fix, but when this failure occurs it is cutting one of the brushes life in half.

[Tundra 5-0]

Re: G110 Failure

Hey Brian clean out you I.M. box

[Bunky]

Re: G110 Failure

I started to read through some of the failure threads and see a common link. The polisher slows down and then just quits. This is what mine did. My fix will work for anyone who's polisher is out of warranty. There seems to be a power issue. The day mine quit I was not using my normal ext cord. It gave out on my second car (I had 2 detail jobs that day) and the home owner was also having problems with his outlet. My normal ext cord is a heavier guage. Also make sure everyone is keeping their ext cords as short as possible. The electric motor demands alot of power to run as long as they do. For example a saw only runs for a couple of seconds, these polishers are running for 5, 7 and maybe 10 mins at a time. They are pulling alot amps. I have a feeling this is what happened to mine. The polisher's are repairable with a quick fix, but when this failure occurs it is cutting one of the brushes life in half.

As the voltage drops over the cord, the current goes up then.

[Nappers]

Re: G110 Failure

.....I have never seen brushes for an electric motor at a hardwhere store, but I believe these are the same as the Porter Cable.....

Our little Ace hardware has the bolt section with parts section with all sorts of stuff to buy for furniture, screen doors, knobs for ovens etc......

One of the drawers is full of brushes of different sizes and never know, you may want to try and bring an old one. These are the brushes with a single wire and either square or rectangular.....I think I found some for my rotary there as they are the same size, never bought them as the ones for my rotary are doing okay for now.

Just a thought.....

Keep us posted if Meguiar's customer support get ahold of ya.

[ClearlyCoated]

Re: G110 Failure

Also make sure everyone is keeping their ext cords as short as possible. The electric motor demands alot of power to run as long as they do. For example a saw only runs for a couple of seconds, these polishers are running for 5, 7 and maybe 10 mins at a time. They are pulling alot amps. I have a feeling this is what happened to mine. The polisher's are repairable with a quick fix, but when this failure occurs it is cutting one of the brushes life in half.

What would you recommend for a maximum distance to gauge ratio? I currently have to use two lengths of cord covering 75 feet, both cords are 16 gauge. It had me concerned and I even posted a thread about it last month. Based upon what I'm reading here, I'm thinking I may need to upgrade my cords to at least 14 gauge.

[SHYNEMAN123]

Re: G110 Failure

When the comm on the armature ( the part the brushes rides against ) is chocolate brown than you have proper commutation. If your ext. cord is to long the voltage to the tool will drop below required name plate voltage and rob power, this loss of power will create excess heat in the brush springs and weaken the pressure of the brush to the comm. both low voltage and weak brush tension will cause excess heat and burn brushes and darken the surface on the comm.

silicon in the air will also cause problems with brushes burning.

And when you sand the comm. make sure you clean in between the bar segments to prevent a short bar to bar and when you replace the brushes you need to seat them, pm me and I will explain how to seat a brush.

[Brian Hann]

Re: G110 Failure

Hey Brian clean out you I.M. box

Cleaned!

[Tundra 5-0]

Re: G110 Failure

I raced R/C cars for many years and built, trued, and dynoed many electric motors (now with brushless theres no need) and am familiar with the seating process. I am mainly doing this to let people know that their failures may be their own fault and not the polisher. Like this was probably mine for using someone elses cord.

[Tundra 5-0]

Re: G110 Failure

What would you recommend for a maximum distance to gauge ratio? I currently have to use two lengths of cord covering 75 feet, both cords are 16 gauge. It had me concerned and I even posted a thread about it last month. Based upon what I'm reading here, I'm thinking I may need to upgrade my cords to at least 14 gauge.

I know as men we never read directions, but check your manual:

Total cord length in feet/Gauge rating

0-25/18 AWG
26-50/15 AWG
51-100/15 AWG
101-150 14AWG

Personally I dont use anything longer than 50 feet and use the heaviest extension cord I can find. My polisher is almost a year old and never had a problem untill I used a customer's ext cord.