Hi.
I'm trying to repair this DC motor (it is from a car-buffing tool) and the only thing i can see that may be wrong is two ends of a piece of wire, i'm pretty sure there should be no loose ends of coil in a motor (i'm a noob don't forget) and there are two loose ends:
http://www.mediafire.com/?4calhoas74dd9x9
http://www.mediafire.com/?v4tderqh510ow4a
I know nothing about repairing DC motors but this seems wrong !
So, i'm thinking i have to get to the two ends in order to reconnect them, the trouble is there is a little metal ring holding the bearing down, which is stopping me from removing the plastic end-cap :
http://www.mediafire.com/?3ekoslf85ly55gi
I have tried thin-noes pliers, stanley-knife, etc ... but i can't get the bloody thing off, and i want it to remain intact so that i can replace it after i've repaired the wire-break.
I've googled and can't find what this ring is called or if there is a special tool for it's removal/replacement ?
If anyone can help i'd be grateful.
Thanks,
Gary.
I can't tell from the first two pix where the broken wires are.
The clip is a snap-ring of a type commonly called "circlip" or "e-clip" or even "c-clip". It rides in a groove in the shaft. You can use needle-nose pliers carefully to separate the ends enough to get the clip out of the groove, then slide the clip off the end of the shaft. If you distort the clip you can bend it back into shape with the pliers. If it breaks, or if you need to break it to get it off, you can get a replacement "e-clip" most likely at your local hobby shop. It might not look exactly the same but as long as it fits in the groove in the shaft and prevents end-play it will be OK. I have even temporarily replaced these clips with bits of steel wire.
TK thanks very much, i tried with long-nose but they were too thick at the ends. I'll grab a special circlip pair when i'm next in the shop.
Thanks again :)
Gary.
You can buy DC motor brushes on Ebay.
FB, thanks. Brushes are fine i just have to get to the wires and i know what i have to do now :)