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Myford super7 spindle lock

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Mick Hill09/01/2017 19:49:48
3 forum posts

when I operate the spindle lock on my super 7 to remove the chuck the brass gear moves inside the cone pully.Can anyone tell me how it is fixed to the pulley. Is there a key way in there that could have broken.

Mick H

Brian Oldford09/01/2017 20:12:36
686 forum posts
18 photos

Is that with the back-gear engaged or not?

Mick Hill09/01/2017 20:31:28
3 forum posts

the back gear is not engaged.before I dissemble and remove the pulley from the spindle I need to know how it is fixed.It is not a loose fit in fact it is quite stiff but does move when when I try to remove the chuck.

Mick H

JohnF09/01/2017 20:42:52
1146 forum posts
189 photos

Hi Mick, just had a look at mine and the manual, there is nothing of help in the exploded diagram but I would suspect there is a key driving the two components. It suggest that it was a factory job because they list only the cone pulley assembly in the manual and no separate parts.

However thats not to say one cannot fix it yourself but it maybe you will need to figure a way to press out the brass gear and re-assemble after repair etc - should not be to difficult depends on what kit you have.

**The back gear should not be engaged when removing the chuck that's what the spindle lock is for, if this feature was not available then engaging the back gear is one option but there is always the danger of damage occurring. The brass gear should defiantly not move --something is wrong !


Edited By JohnF on 09/01/2017 20:46:30

Mick Hill09/01/2017 20:51:12
3 forum posts

Thanks John

Yes I Think that is the way to go, I Know that it's split in the middle of the cone with a gap for oil so I should be able to press it out and possibly use some locktite.I am surprised that no one else has had this problem.

Thanks again

Mick H

anthony smith 410/01/2017 20:42:11
10 forum posts



KWIL10/01/2017 21:26:25
3548 forum posts
70 photos

Original manufacture, was pressed in. I bought a replacement brass gear from "old" Myford when I wanted one.

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