Meguairs G220 (220v) - Changing the Carbon Brushes

Seems that a few of the EU and Asian members were looking for carbon brushes and also a "how to" in changing them. So I got some free time today and decided to help out the members here.

Been looking around for alternatives for the carbon brush and managed to source them locally. Equivalent to the original ones (dimension wise) but not 100% sure on the composition of the carbon though. -

Caveat: I am not a trained electrician so use this only as a reference. I am not going to be responsible for any damage caused at your side.

Wished we had a Meguiar's service center here in Malaysia.



Difficulty Level: Basic electrical knowledge

Time Required: 15 Minutes or so.

Things you need.

1. Phillips screwdriver
2. Some sandpaper (1000grit)
3. Carbon Brush - BOSCH Part No: 1.607.014.145 (order no: 1.607.031.204)
(there are other makers of brushes out there [dewalt,hitachi,makita] but I only managed to source them from Bosch Repair Centre - nearest to me)







Unplug the cord from the power outlet.


Step 1: Remove the screw near the speed control knob. ( I used an impact driver (Bosch) to remove - easier and faster)




Slowly pull out the cover.


Reveals this.





Step 2: Locate the holder for the carbon brushes. Its secured with two Phillip screws.

Unscrew them one side at a time. (take pictures if you are unsure of the location/placement of wires)

This is the holder under the speed control - remember the placement of the wires for the speed controller- especially the red and a black wire-going to the carbon brush holder; (both run under the speed controller).

Don't want to squish them when putting back the cover.


- After taking out the two screws holding it down, remove the clip holding the wire for the carbon and slide the carbon down. Be careful on not to damage the spring.






Worn out carbon brush.





Optional Step: Since the commutator is exposed - I decided to clean them.

Take the sandpaper and wrap it at the end of a pencil (eraser part). This makes it easier to reach the commutator.

Gently press the sandpaper to the comm and oscillate the backing plate to turn the commutator.


After a few turns, the commutator is at a better level.






Step 4: Re install the new carbon brush into the holder. Screw in the two screws.



Step 5: Repeat the process to replace the other carbon.

Optional Step: Clean the dust/dirt/polish residue off. Q tips+water (or your choice of cleaners) works marvelously. Apply the cleaners on the Q tips not directly on the internal parts.

Step 6: Reinstall the cover. Hold the cord coming out of the machine and pull the cover towards the main body. Secure the cover by screwing in the screw. Run the machine at low speeds just to seat the brushes in properly. After which test the machine (speed 3-5) to check for any problems.


Voila - New brushes and cleaned commutator -Your machine should be good to go.


Hope this helps.


If you have any comments/suggestions/questions do please reply via comments box.


Cheers!