Search found 6 matches

by KD2ORG
Thu Mar 16, 2023 9:04 am
Forum: Maintenance and Repair
Topic: Mark 510 Power Pro Headstock making rattling noises
Replies: 15
Views: 1686

Re: Mark 510 Power Pro Headstock making rattling noises

I think the run-out is not that serious a problem. I don't really know what acceptable/unacceptable run-out feels like, but if is out of tolerance then it is very slight. The bearing noise is bothering me, though. Figuring out which bearing is causing the noise is the problem. Is it possible to remo...
by KD2ORG
Thu Feb 23, 2023 8:35 am
Forum: Maintenance and Repair
Topic: Mark 510 Power Pro Headstock making rattling noises
Replies: 15
Views: 1686

Re: Mark 510 Power Pro Headstock making rattling noises

Thanks, David, I think that's useful. I got about 10 degrees of movement in the eccentric which I assume is OK. Though it does run quieter, and the table-saw cuts 2x4s like a dream, today I noticed some more bearing rattle at the higher speeds. It appears to come from the front of the quill, however...
by KD2ORG
Thu Feb 23, 2023 8:32 am
Forum: Maintenance and Repair
Topic: Mark 510 Power Pro Headstock making rattling noises
Replies: 15
Views: 1686

Re: Mark 510 Power Pro Headstock making rattling noises

Thanks, David, I think that's useful. I got about 10 degrees of movement in the eccentric which I assume is OK. Though it does run quieter, and the table-saw cuts 2x4s like a dream, today I noticed some more bearing rattle at the higher speeds. It appears to come from the front of the quill, however...
by KD2ORG
Tue Feb 21, 2023 4:28 am
Forum: Maintenance and Repair
Topic: Mark 510 Power Pro Headstock making rattling noises
Replies: 15
Views: 1686

Re: Mark 510 Power Pro Headstock making rattling noises

I've completed the repairs to my Shopsmith and she is running better now than than she has in an embarrassingly long time. Most of my problem was in the Nissyo 100v to 117V/240V step-up transformer that I must use to get the thing to run on Japanese voltage. After fixing a cold-solder joint and repl...
by KD2ORG
Fri Feb 17, 2023 7:49 am
Forum: Maintenance and Repair
Topic: Mark 510 Power Pro Headstock making rattling noises
Replies: 15
Views: 1686

Re: Mark 510 Power Pro Headstock making rattling noises

OK, I found the problem. Two problems actually. First, the rattling noises I've been hearing are apparently caused by the belts having unequal tension. That was caused by the motor not being mounted parallel with the intermediate shaft. The bearings are still tight, though, so I don't believe they a...
by KD2ORG
Mon Feb 13, 2023 6:11 am
Forum: Maintenance and Repair
Topic: Mark 510 Power Pro Headstock making rattling noises
Replies: 15
Views: 1686

Re: Mark 510 Power Pro Headstock making rattling noises

Many thanks for your assistance, guys! I spent all day yesterday digging into my headstock and found the belts in good condition, the bearings tight and without axial play or run-out and the setscrews tight. I did find, however, that the motor was a bit skewed on its mount. I remember having trouble...