|Forum topic by gtbuzz||posted 01-18-2014 10:56 PM||1182 views||0 times favorited||14 replies|
01-18-2014 10:56 PM
Updating this thread because some of the info has changed. Original post follows.
Originally this thread was about my dust collector motor making a squeaking noise while spinning down. Unfortunately, I didn’t heed all the advice my fellow LJ’s gave me and I seem to have screwed something up. I took a Q-tip to try to wipe off the contact that was making noise to see if that would help. The squeaking did go away, but unfortunately, I seem to have caused a much bigger problem.
Now, the motor doesn’t seem to want to start at all. When I apply power, I hear a buzzing noise like always and it actually rotates a few times before giving up. I’ve tried checking for random bits of Q-tip inside there like Grandpa suggested but no luck. A couple things I’ve noticed:
Any ideas what I might have screwed up? When I had the cover off and I was spinning the shaft that the cooling fan mounts to, I wasn’t thinking about it, but I’m pretty I may have accidentally spun the shaft the opposite direction it’s supposed to go. Not excessively, but I could see doing it for a couple dozen revolutions or so. Could that have something to do with the problems I’m seeing?
Recently the motor on my dust collector started making a squeaking noise. It only happens when the motor is spinning down, and only right before it’s about to stop. I’ve figured out where it’s coming from, but I’m not sure what to do about it.
The picture above is where the cooling fan normally sits on the motor. It’s a little hard to see, but the part labeled as part A seems to be coming into contact with part B. Part A is attached to the motor shaft, while part B is a thin metal part that seems to have a little play in it. I’m not 100% sure on this, but I think the piece may be designed to deflect away if the motor is over a certain RPM – that’s just a guess though.
If I take a piece of wood and deflect part B a little bit so that it’s not in contact with part A and spin the shaft, the noise goes away, however as soon as I let it deflect and do what it wants to (come into contact with part A), the squeaking noise goes away.
Does anyone know what I can do to make the noise go away? Everything works okay otherwise. I thought about squirting some dry film lube on it or maybe some WD40, but those have flammability warnings all over them so I’m not sure if it’s an okay thing to do or not.
If anyone has some suggestions, I’d really appreciate it.