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- Apr 30, 2015
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Someone had a procedure on rebuilding the head- if I can find the link I'll post it here
Mark
ps here you go:
I'm with you, Mark, about "hoarding" information, at least about machines that I own or expect to own one day (and I do own an 8520). Not being one to want to reinvent the wheel when I can help it, I have created 3-ring binders for most of my machines where I put whatever manuals, brochures, parts lists, write-ups of procedures, etc. I come across in the cornucopia of information available to us on the internet (most of which couldn't have been found anywhere pre-internet). I can sleep a little better knowing that if and when I need to rebuild the head of my 8520 I will have an excellent step-by-step guide to doing it. Also, the next owners of these machines will probably be ecstatic to have access to these "books" after the big estate sale!OK understood, good little mill even if it needs a little fixing, I don't own one but I like to stockpile information just in case
Hello my name is MARK and I'm an information hoarder
I'm with you, Mark, about "hoarding" information, at least about machines that I own or expect to own one day (and I do own an 8520). Not being one to want to reinvent the wheel when I can help it, I have created 3-ring binders for most of my machines where I put whatever manuals, brochures, parts lists, write-ups of procedures, etc. I come across in the cornucopia of information available to us on the internet (most of which couldn't have been found anywhere pre-internet). I can sleep a little better knowing that if and when I need to rebuild the head of my 8520 I will have an excellent step-by-step guide to doing it. Also, the next owners of these machines will probably be ecstatic to have access to these "books" after the big estate sale!
I'm reading this thread almost like a mystery serial and I can't wait to find out what the issue turns out to be. The answer may well end up immortalized (printed out and lodged in a page protector) in my 8520 book!
Bill
So I'm 90% sure my noise is coming from my pulley being loose. I can't seem to pinpoint any other problem. I completely removed the cover and the noise is still there. So it's not the brake handle. I then attempted to remove the pulley. I started by attempting to remove the drive plate. I removed the two hex screws and the side spring loaded set screws but the drive plate seems to be fused to the pulley pretty good. The document for rebuilding the 8520 head makes it seem like this drive plate should just come right off....it doesn't. I also found the two set screws to be excessively loose. More on this in a bit. The video below shows me trying to slide the pulley up and off of the shaft but' it's binding on something. Again, I don't know WTF. So I gave up, slid the pulley back down and tightened the set screws. The pulley tightened up ok until I went to cut something. The pulley slid back up a tiny bit and the noise continued. Took the thing apart again and the pulley moves up and down. Granted it requires some effort to move up and down but it's moving nonetheless. I'm not sure what's going on with this thing and I just want it to work. I sold my Rong-Fu to buy this mill in part because of it's cult following and right now I just feel pretty annoyed...