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ML10 tailstock

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Dave Springate10/02/2019 17:56:14
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56 forum posts
121 photos
Hi all, im new here and just picked up my first lathe am ML 10. The lathe has been dry stored in a garage for the last 13 years and is in a bit of a state. Have spent the weekend in the shed stripping and cleaning. my problem is the tailstock Ive stripped it and got tgd quill out but now seems to big to go back in the bore. im putting it back in the way it cane out but it just wont go in.everything is clean and lightly oiled an i missing something here ?
Howard Lewis10/02/2019 19:38:04
2142 forum posts
2 photos

Never have had a ML10, but insulting you by stating what may be painfully obvious, you do know that there is a key in the Tailstock body to prevent rotation of the barrel?

Recently, working on the Tailstock for a ML2 with a rotating barrel, having removed the Barrel, it would only enter from the back end, with the key removed. Once in situ, the barrel was rotated to bring the Keyway in line with the tapping for the key. This key took the form of a 1/4 BSF grubscrew, with the end filed (insufficiently) to form a key to enter into the key way. Filing and a bit of trial and error found the maximum engagement short of preventing the barrel from entering fully.

H T H

Howard

Chris Trice10/02/2019 20:21:30
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1362 forum posts
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Howards reply is the most likely cause. The key has to be twisted in line with the slot in the barrel.

Dave Springate10/02/2019 21:20:18
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56 forum posts
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hi all thanks for the replys, yes im aware of the key way and key slot, its at the front of the tail stock and the quill comes out and goes back in from the rear of the housing like you describe for the ML2. I think i will freeze the quill and see if that helps.

Edited By Dave Springate on 10/02/2019 21:22:07

Robert Butler10/02/2019 21:37:27
76 forum posts
1 photos

I can't see freezing the barrel will make the slightest difference. Robert Butler

Dave Springate10/02/2019 21:46:42
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56 forum posts
121 photos
I was thinking if the tail stock housing is warm and the quill is cold it might give me enough room to get it back in.
Robert Butler10/02/2019 22:35:59
76 forum posts
1 photos

Can't imagine Myford bothering with this during assembly of a new machine where fits would be tighter. Robert Butler

SillyOldDuffer10/02/2019 22:37:06
4521 forum posts
971 photos
Posted by Dave Springate on 10/02/2019 21:46:42:
I was thinking if the tail stock housing is warm and the quill is cold it might give me enough room to get it back in.

Unlikely, the difference will be tiny. Also, if it did work the quill would jam at normal temperatures, not good.

Something else is wrong, and it's probably simple. Can you post a few photos?

Dave

Dave Springate11/02/2019 07:09:43
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56 forum posts
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thats a good idea just need to work out how to add a photo first lol, just added two pictures of the quill it looks in good nick no dings or scratches.

Edited By Dave Springate on 11/02/2019 07:21:20

Alan Donovan11/02/2019 08:18:12
11 forum posts
9 photos
Hello. If it is not the barrel key, the most likely cause is the barrel clamp. If this is slightly twisted in the tailstock housing it can prevent the barrel passing through the housing.
I suggest you do not install the upper clamp block until you have the barrel installed.
I hope this helps.
Michael Gilligan11/02/2019 08:53:55
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13547 forum posts
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Posted by Dave Springate on 11/02/2019 07:09:43:
... just added two pictures of the quill it looks in good nick no dings or scratches.

.

I suggest you measure the diameter somewhere near each end, and compare

My hunch is that the taper reducer has been forced-in, and has swelled the quill.

MichaelG.

Dave Springate11/02/2019 09:05:32
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56 forum posts
121 photos
I did wonder if that would be possible. I took the quill to work this morning and have now pushed the adapter out. It was in there very very tight !
Mick B111/02/2019 09:39:14
1124 forum posts
62 photos

I sold my Speed 10 3+ years ago, but from what I remember I'd reckon Alan Donovan's reply is nearest. If you got the quill out it's hard to imagine that anything could've been done since with sufficient force to swell the quill and jam it.

I should think if you'd done that you'd know about it!

Dave Springate11/02/2019 09:52:50
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56 forum posts
121 photos
yes going to try what Alan mentions tonight after work.
Dave Springate11/02/2019 19:45:36
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56 forum posts
121 photos
well it's back in ! removed the small lock down barrel thing and made up a draw bar with a lenth of threaded rod. It went in but was tight. its now back in place and when using it its still quite stiff at the extremes of the travel. It was spotless when I put it together and lightly oiled. I haven't painted the tailstock body as can't seem to find the correct paint but I kinda like the "aged" look as long as it's clean. I've also use a 12 bore pull through to make sure the inner taper is spotless too.
Mick B111/02/2019 21:34:59
1124 forum posts
62 photos
Posted by Dave Springate on 11/02/2019 19:45:36:
...
I've also use a 12 bore pull through to make sure the inner taper is spotless too.

I'd use a phosphor bronze wire brush too with Young's 303, followed by flanelette patches to clean and a wipe with an oily rag... wink

Was the taper sleeve stuck by rust, or excessive insertion force?

Dave Springate11/02/2019 22:04:23
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56 forum posts
121 photos
A bit of both really, the quill is definatly fatter at the end than in the middle. which is why I was having trouble gettin it back in.

Edited By Dave Springate on 11/02/2019 22:05:30

Michael Gilligan11/02/2019 23:27:56
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13547 forum posts
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Posted by Dave Springate on 11/02/2019 22:04:23:
... the quill is definatly fatter at the end than in the middle

.

Measurements would be interesting, if you have them.

MichaelG.

Dave Springate12/02/2019 07:09:07
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56 forum posts
121 photos
I've uploaded a couple of photos to the tailstock album showing measurements
Michael Gilligan12/02/2019 08:41:24
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13547 forum posts
586 photos

Thanks, Dave

Those should be of interest to any future visitor, with similar problems.

MichaelG.

Edited By Michael Gilligan on 12/02/2019 08:43:04

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