Milwaukee Grinder Repair – Replacing the Carbon Brushes (Milwaukee Part # 22-18-2250)


Your power tool’s motor uses two carbon brushes
to conduct electricity to the armature. They do this through the commutator. The carbon brush will wear down over time
from rubbing against the rotating commutator and will need to be replaced. Worn brushes can cause excessive sparks around
the commutator. Sparks can also be caused by a damaged armature. You want to carefully inspect both if sparks
are present. Replacing the carbon brushes is a repair that
you can do yourself. I’m going to show you how. Hi, I’m Mark Sodja.Do it yourself repairs
like these are easier than you might think. From lawn machines to cordless drills, kitchen
mixers, outdoor grills. Our how to videos walk you through each repair
from start to finish. Doing it yourself means never having to do
it alone. Let’s get started. I’ll begin by removing the guard and the side
handle. Now remove the rear housing. Now I have access to the brushes, the assembly
is secured with one screw. I’ll go ahead and remove it, then I can lift
the assembly away from the housing and disconnect the wire lead.Now I can install the new brush
assembly. I’ll connect the lead, align the holder with
the housing and secure it with the screw. I’ll make sure to tuck the wire back into
the holder on the housing. Now repeat this on the other side. Now reinstall the spring under the switch
lever, and replace the lower piece of the housing. Tuck all the wires out of the way, make sure
the PC board is firmly in the housing. I’ll place the wire over the cord clamp. I want about a quarter inch of the outer wire
jacket extending past the cord clamp, and I’ll place the strain relief within the housing.Now
reinstall the trigger paddle. Now reinstall the top piece of the rear housing
and secure the housing with the screws. I’ll finish up by reinstalling the guard,
the flange nuts and the side handle. That’s how easy it is to install new carbon
brushes in your power tool. Be sure to check back often for new videos
and expert advice. If you found this video helpful. Give us a thumbs up and leave a comment.

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