Early Myford super 7 clutch problem.

My early model (with oil sight glass) super 7 clutch has started to slip
badly. I have attempted to remove the shaft and examine the clutch. Despite
my efforts and a large hammer I can't get the shaft out of the
clutch/pulleys. I have a manual but its from a later model and I believe
the clutch design is different. Should the shaft come out on the drive side
or on the lathe side? Have I missed something? I have taken out all the
grub screws I can find but they may be something I'm not aware of. The
shaft seems to move about an inch but then stops moving and sounds "solid".
The clutch rod moves in and out but I can't remove that from the shaft.
Regards, Pete
Reply to
Peter Gavin
Loading thread data ...
Has the clutch shoe emerged from the drum?
Reply to
No, can't separate the clutch from the pulleys. It moves a tiny amount but wont split apart, seems like they are still attached?
Reply to
Peter Gavin
Pete, is the clutch the same as the one on the ML7, i.e. brake shoes in the middle of the outboard countershaft pulley? If so, I repaired mine earlier this year so may be able to help.
Reply to
Peter Neill
I found an old reference to this problem via a web search. It said there was an adjustment screw "lurking" beneath a grub screw on the largest pulley. I had to use a torch to see it. At first this screw was REALLY stiff but after a bit of right and left turning began to move. I doubt that has been adjusted in the 50 odd years since this lathe was built! Although I don't yet have the correct info I have found that 1 turn back from fully in seems to work OK.
Thanks to all those who offered help an advice,
Regards, pete.
Reply to
Peter Gavin
Sorry but I don't know what it looks like on the inside because I cant get it apart ;-)
See my new post about the adjustment screw I found.
Thanks, Pete
Reply to
Peter Gavin
--And don't forget to lubricate the clutch every now and then. It's one of those things I almost never remember, but it's really crucial to the health of the clutch. Just disengage and, when the plates are moved apart a bit a few drops will do it.
Reply to
Are you talking about the later metal cone clutch here, or the earlier Raleigh moped brake shoe clutch?
Mark Rand RTFM
Reply to
Mark Rand
--Yeah you're right, the later metal cone clutch is probably the one I mean. My Super 7 dates from 1982 and it's got this device fitted.
Reply to
The spindle has a slight taper on it. It will go one way, but definitely not the other way, unless you want to wreck the needle rollers.
In the pulley there is a screwed cap which needs to be removed, and there's another screw under that which also needs to be taken out.
From memory, I think the spindle needs to be driven out from the motor pulley end (ie drawn out where the clutch lever is). I think you might need to remove the lever. I had to do a similar job on my 1958 S7 and the manual didn't cover the procedure. I called myford and they sent me photocopies of the relevant pages of the manual showing the clutch in detail. I was a piece of cake after that.
Hope this helps
Reply to

PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.