Search found 4 matches

by mnnance3
Wed Dec 24, 2014 9:11 pm
Forum: Maintenance and Repair
Topic: Sticky motor sheaves
Replies: 11
Views: 2519

Re: Sticky motor sheaves

Thought I would stop back tonight and fill you in on what the problem turned out to be..
I had worked all over the long key to ensure that there were no burrs or nicks. It was smooth as silk but still the sheave hung. Finally just on a hunch I put the keyon my straight edge and I could see light ...
by mnnance3
Mon Dec 15, 2014 11:22 am
Forum: Maintenance and Repair
Topic: Sticky motor sheaves
Replies: 11
Views: 2519

Re: Sticky motor sheaves

Yes, the roughness makes me think it tried to run for a while.
I slid two small screw drivers along either side of a "finger" on the floating sheave. I'm not sure what moved, but the "stickyness" seems to be less pronounced than it was. Still present, but less.
I have cleaned the mating faces of ...
by mnnance3
Sun Dec 14, 2014 9:25 pm
Forum: Maintenance and Repair
Topic: Sticky motor sheaves
Replies: 11
Views: 2519

Re: Sticky motor sheaves

I watched the online videos a half dozen times before diving in.

The reason I thought the "bushing" in the floating sheave was press in was appearance. It appeared to me to have a bronze interior and aluminum body, while the fan sheave looks to be all one material (aluminum)

DSC_3570_1.jpg DSC ...
by mnnance3
Sun Dec 14, 2014 10:45 am
Forum: Maintenance and Repair
Topic: Sticky motor sheaves
Replies: 11
Views: 2519

Sticky motor sheaves

I purchased a used 500. The seller told me it had a motor problem.

I opened it up, and found that the motor sheaves are stuck in the high speed position.
I removed the motor pan, pulled the spring and was able to split the two sheaves. I removed both sheaves and the long key. There does appear to ...