brush adjustment on Milwaukee right angl
tuolumne7
| Posted in Tools for Home Building on
Help! I have a Milwaukee right angle drill around 6 years old. The drill has plastic set screws to adjust the brushes. When the drill was fairly new, it began to sputter etc., and turning those screws a bit solved the problem. However, on the second adjustment a few years later the plastic was too brittle and cracked. I can no longer budge these set screws, and the drill no longer goes. If I press down on the screw she’ll start again, but I can’t do this and drill at the same time. Anyone else have this problem? What do I do? I was thinking of drilling out the busted plastic set screws and finding a similar metal replacement. Would this electrify the user?
Replies
They are NOT adjusters, they are Keepers, the spring is the adjuster.
You need new brushes and maybe an armature if you cranked the brushes in too hard and ground them down beyond the replace line.
Spheramid Enterprises Architectural Woodworks
"Success is not spontaneous combustion, you have to set yourself on Fire"
DW was like that. We had a kitchen single-handle faucet that would drip very slowly unless the handle was in just the right spot. Didn't have to pull hard, just get the handle centered. She wouldn't believe that, and many times a day used both hands to pull as hard as she could to stop the drip. Taught that to the girls too. I tried to explain, she wouldn't listen, insisted that was the solution. Either that, or I could get off my fat but and replace it."Put your creed in your deed." Emerson
"When asked if you can do something, tell'em "Why certainly I can", then get busy and find a way to do it." T. Roosevelt
These set screws have been turned about a half turn in their lifetime. The first time was 1/4 and the second (that busted the brittle threads) was another 1/4 turn. That doesn't seem far enough to do any damage to the brushes. Maybe the spring has just lost some oomph over the years. As I said, squeezing on the set screws brings life to the drill again.
Remove the screws, they are bakelite, and pull the brushes..look on the side of the brush for the line across the wide face..if it is GONE the brush is shot and the spring is out of travel to feed it to the armature. Get new brushes. And from the sound of it, new caps too.
5 minute fix once ya have the parts.Spheramid Enterprises Architectural Woodworks
"Success is not spontaneous combustion, you have to set yourself on Fire"
The plastic caps aren't supposed to be adjustable. They are supposed to be scrwwed in until they seat, and the difference is made up by the spring that pushes the "brush" against the armature. "Put your creed in your deed." Emerson
"When asked if you can do something, tell'em "Why certainly I can", then get busy and find a way to do it." T. Roosevelt