My big DC motor has been getting louder and louder- it still ran OK for a 22 year-old unit that was used hard. I got it from a Lumber and millwork shop that used it hard before they went out of business. Last Friday, the motor started making even more, really suspicious, nasty noises, so I unbolted and removed the cyclone, then lowered the motor/blower to the floor from its 10' high mount against the garage wall. I removedthe impeller then the motor from the base and took it to my shop to replace the bearings. One bearing was all torn up- pieces of the metal shield were scattered around inside the case!!! The other bearing was intact but in bad shape.
A local machine shop wouldn't pull the bearings while I waited, so I got a loaner bearing puller from AutoZone and pulled them myself. I bought replacement bearings from an Auto parts/machine shop and installed them. I put everything back together, mounted the motor/blower back on the wall, then mounted the cyclone.
When I powered it up, first of all it worked fine, but just as important, I couldn't believe how quiet it was compared to what it sounded like before!!!!! The motor is good to go for another 22 years!!
My wife and I did all the lowering and lifting! Not a problem since I installed it on stilts!
A local machine shop wouldn't pull the bearings while I waited, so I got a loaner bearing puller from AutoZone and pulled them myself. I bought replacement bearings from an Auto parts/machine shop and installed them. I put everything back together, mounted the motor/blower back on the wall, then mounted the cyclone.
When I powered it up, first of all it worked fine, but just as important, I couldn't believe how quiet it was compared to what it sounded like before!!!!! The motor is good to go for another 22 years!!
My wife and I did all the lowering and lifting! Not a problem since I installed it on stilts!