Powermatic 3520b. Anyone replace the spindle lock button/bar?

[Matthew Cowan]

I bent my spindle lock trying to loosen a large piece attached with a faceplate. I can't find any resource describing replacing it. I have ordered a new one. My investigation has left me with the unfortunate realization that I must remove the entire spindle in order to replace the current spindle lock button/bar. I am hoping that someone has a better option or can confirm this is indeed the only way.

 

[john lucas]

The spindle lock button should come out with just 2 allen screws. Not sure about the spindle lock ring that is on the spindle. It has allen screws that fasten it in place but I don't have access to my lathe right now to look. I find it hard to believe you bent the spindle lock button. It's pretty stiff. Check and see if it's aligned properly with the spindle lock ring. You may have damaged the spindle lock ring. It has a square opening. I've seen them rounded out.

 

[Matthew Cowan]

Thanks. Definitely bent. Can turn it and see the bend. Can not see any set screws related to the mechanism. Just the button cover itself. I think the piece is installed before the spindle is put in place
therefore probably needs to come out that way.

 

[Bill Boehme]

Here is a detail from the parts diagram showing the spindle lock and the locking pin. It also shows the location of the set screw. Part #64 is the locking collar and #59 is the pin.



Here are a couple link to solutions to keeping the locking pin engaged.

Powermatic 3520B Spindle Lock Solution


http://www.docgreenwoodturner.com/spindlelock.html

 

[Joe Penn]

I have a Jet which has the same spindle lock setup and I hold the lock in with a button sized rare earth magnet that I store next to the lock button.

 

[James Seyfried]

Here is a detail from the parts diagram showing teh spindle lock and the locking pin. It also shows the location of the set screw. Part #64 is the locking collar and #59 is the pin.

View attachment 8852

Here are a couple link to solutions to keeping the locking pin engaged.

If you look at part 99 in the parts diagram it is Powermatic's upgrade to keep the locking pin engaged. At this years symposium a rep gave me an upgrade kit; it works as intended.

Matthew, which part did you bend? Part number 59 in the parts diagram Bill posted?

 

[Matthew Cowan]

Part #59. Ive decided that the bend has wedged it, preventing it from sliding out after removing the button cover.

 

[Gene Paolini]

did you ever figure out how to remove it. I bent mine the other day. I have the spindle removed and can see the bend in the lock but can't straighten it enough to remove it.

 

[Dwight R Rutherford]

did you ever figure out how to remove it. I bent mine the other day. I have the spindle removed and can see the bend in the lock but can't straighten it enough to remove it.

I’m in Roseville also. While I can’t help you myself, I know a guy!
Message me.
Dwight

 

[Bill Boehme]

I fixed the broken link in my post #4 above.