Roomba side brush motor repair..

Scarpozzi

Lifer
Jun 13, 2000
26,391
1,780
126
I've got a Roomba 665 (I think that's the model) that I bought. I replaced the side brushes with some I got off ebay and the screws were threaded differently. They quickly stripped the nylon/soft plastic threads in the motor. I've been trying to repair this thing for ever, but keep hitting snags. I've tried a few types of super glue and gorilla glue to fill the hole and basially retap. I read that epoxy doesn't work well to do this kind of repair. I tried super glue, but it cracked an came out.

Gorilla glue forms small air bubbles in it as it cures....almost like a foam. This was good because I was able to add a little more as it cured and tamp down what was there without it sticking to the dentistry tools I used to pack glue down. It worked for a few cleanings, but eventually it couldn't handle the torque. I found a youtube video with a guy using bondo, but I don't have any and he never posted back to say whether or not it held up. If I can't fix it with glue I have, I'll put up $30 and replace the motor....just curious if anyone has any other ideas on how to repair it (or a source of good motors that are less than $25-30)

=P
 

Micrornd

Golden Member
Mar 2, 2013
1,340
220
106
Pics ??
Possibly Clear Gorilla Glue, no air bubbles or foam, so it should be "tappable".
I've used it on acrylic and lexan to repair some tapped through-holes, but never nylon.
 

Scarpozzi

Lifer
Jun 13, 2000
26,391
1,780
126
Maybe this ?

with this -
Yeah. That's the part. They're $26 on eBay and Amazon, I'll see what shipping costs.

I'm tempted to disassemble mine and see if I can replace the screw hole with a brass sleeve somehow if they sell something at the hardware store. That way it can handle the torque.

I'll see what other flavors of gorilla glue I have. I think the kind that got the air bubbles was original. It sort of turns white when it cures.