Brushed motor rehab
Posted: Sat Apr 16, 2022 3:12 pm
I'm throwing this together at the request of another member. This is just some of the stuff that I do, so take it for what it is. If someone has any ideas to add, please do so.
I rummaged through my stuff and found this crusty Peak Racing 12X2. It looks like a good candidate.
Start by disassembling everything. This one has removable brush hoods, so more detailed work can be done.
Holding the brush hoods with smooth jaws needle nose pliers, I use a mini torch and brass brush to remove any solder. In this case, I also removed the soldered on brushes as well.
Then everything gets a good scrub with dish soap and a toothbrush. A ultrasonic would work as well.
I then remove the decal and prep the can for paint, if necessary. The decals can sometimes be troublesome, this one required acetone to remove all the adhesive. It then got scuffed with a fine sanding block (foam).
If the can is chrome, I'll just try to clean it up. If necessary, I'll buff it with a fine sanding block.
This is the paint I use, Krylon Fusion. It isn't ultra high temperature paint but it bonds well. If you think that you need high temperature paint, consider engine enamel.
I put tape through the mounting holes and bearing, and stuff the can with a paper towel. Then, 2-3 light coats. Give it at least an hour to dry.
While the paint is drying, I reassemble the endbell. If you have the tools, now is the time to align the brush hoods.
This comm didn't need to be cut. It cleared up nicely with a comm stick and fiberglass pen. I'll pick back up with reassembly later.
I rummaged through my stuff and found this crusty Peak Racing 12X2. It looks like a good candidate.
Start by disassembling everything. This one has removable brush hoods, so more detailed work can be done.
Holding the brush hoods with smooth jaws needle nose pliers, I use a mini torch and brass brush to remove any solder. In this case, I also removed the soldered on brushes as well.
Then everything gets a good scrub with dish soap and a toothbrush. A ultrasonic would work as well.
I then remove the decal and prep the can for paint, if necessary. The decals can sometimes be troublesome, this one required acetone to remove all the adhesive. It then got scuffed with a fine sanding block (foam).
If the can is chrome, I'll just try to clean it up. If necessary, I'll buff it with a fine sanding block.
This is the paint I use, Krylon Fusion. It isn't ultra high temperature paint but it bonds well. If you think that you need high temperature paint, consider engine enamel.
I put tape through the mounting holes and bearing, and stuff the can with a paper towel. Then, 2-3 light coats. Give it at least an hour to dry.
While the paint is drying, I reassemble the endbell. If you have the tools, now is the time to align the brush hoods.
This comm didn't need to be cut. It cleared up nicely with a comm stick and fiberglass pen. I'll pick back up with reassembly later.