Gallery, Projects and General > How do I??
How do I get the old oil out of the headstock?
tinkerer:
According to the pictures, the clutch pack is staying compressed. If it was stored engaged, they may be stuck together. You may try to gently pry them apart. I had a corvette clutch seize to the flywheel after setting for a couple of months. It was a bear to seperate.
AdeV:
--- Quote from: Darren on November 13, 2009, 04:39:30 PM ---I doubt it's from underneath as it needs to accessible for assembly. Just a hunch.
The clutch seems to be two serrated plates pressed together for engaged. They should come apart to dis-engage.
I wonder if that has anything to do with the bolt you found?
--- End quote ---
Hmmm - if one grub can come undone from a gear, it's possible another one could, from a gear which is not accessible with the 'box assembled. Short of dismantling the whole headstock gearbox, I'm not sure how to verify this.
As for the clutch; the serrated plates were my first idea, but I think that's a safety device in case the spindle locks up. The set of disks to the left of the serrated disks are, as tinkerer says, a clutch pack.
--- Quote from: tinkerer on November 13, 2009, 04:59:45 PM ---According to the pictures, the clutch pack is staying compressed. If it was stored engaged, they may be stuck together. You may try to gently pry them apart. I had a corvette clutch seize to the flywheel after setting for a couple of months. It was a bear to seperate.
--- End quote ---
I did wonder about that; however, in the higher gears in particular, the clutch appears to operate properly - albeit not terribly efficiently. I suspect that it requires an adjustment to be further disengaged, but I'm not sure how to do that. I will have to stump up the £45 to buy the manual, I think.
John Stevenson:
Hard to tell from the pics but it looks as if those serrated disks may be the adjustment, rotate one against the other to adjust.
As regards the two screws, it's common to fit two into one hole, top one to lock the bottom one.
Can't help with a manual as i never had one for mine but LA Services has one for £19.50.
http://www.theengineersemporium.co.uk/manuals/manualse.html
John S.
John Hill:
Regarding those grub screws, the mangled one might look mangled because it came loose and got chomped by a couple of cogs but if it looks like it was mangled by a tool tightening or loosening the screw that could mean it got mangled during a repair job and got dropped into the bottom of the box in which case you will never find where it came from because they put a new grub screw in its place.
AdeV:
--- Quote from: John Stevenson on November 13, 2009, 06:54:48 PM ---
Can't help with a manual as i never had one for mine but LA Services has one for £19.50.
http://www.theengineersemporium.co.uk/manuals/manualse.html
--- End quote ---
Thanks for the link John - unfortunately, that's for the Mk2 lathe; there's obviously a fair number of similarities, but - it's becoming clear that I'm going to have to do a full rebuild & refurb on this lathe; and I need to know how to pull it all to pieces to do that. Oh, and put it back together again :)
--- Quote from: John Hill on November 13, 2009, 07:01:43 PM ---Regarding those grub screws, the mangled one might look mangled because it came loose and got chomped by a couple of cogs but if it looks like it was mangled by a tool tightening or loosening the screw that could mean it got mangled during a repair job and got dropped into the bottom of the box in which case you will never find where it came from because they put a new grub screw in its place.
--- End quote ---
I'm not sure where the mangled one's gone (it's on the bench somewhere), but it looked like it had been eaten by a giant metal rat... so I'm assuming (with the appropriate caveats) that it's responsible for damaging the gears. As to whether it belongs & has been replaced; I've no idea. See above, I think at some point I'm going to have to dismantle the whole headstock & refurb & rebuild it. But TBH, I'm not sure I'm ready for that project yet...
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