Drummond M Tailstock Disassembly

This topic has 8 replies, 2 voices, and was last updated 5 May 2016 at 11:34 by James Jenkins 1.

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4 May 2016 at 18:09 #237520
James Jenkins 1
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@jamesjenkins1
Hi all,

I am about to post an 'About me" post in the correct section, but I wonder if anyone can help with disassembling the Drummond M tail stock?

I have all the parts striped off, but cannot get the two castings apart. I have unscrewed the square headed lateral adjuster until it has slipped off the thread inside, but the two castings are still together firm. The screw above it cannot come out until the square headed adjuster has and the only other part left is a rod to the underside of the lower base, which I cannot extract.

I am doing a middle of the road restoration and I really need to get them apart as there has been a lot of debris (mainly brass swarf) entering between the two surfaces and it does not operate smoothly.

Any suggestions?

Kind regards,

James

Edited By JasonB on 04/05/2016 19:45:11
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4 May 2016 at 18:09 #18083
James Jenkins 1
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@jamesjenkins1
4 May 2016 at 20:23 #237535
Ady1
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@ady1
It's about 5 years since I took this one to bits… but it may help

I think they needed to be dinked apart because the workmanship is so good

(dink dink dink dink…)

Edited By Ady1 on 04/05/2016 20:27:07
4 May 2016 at 20:37 #237536
James Jenkins 1
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@jamesjenkins1
By dinked, do you mean gently tapped? They feel quite tight, but I can check again tomorrow.

Really helpful photos – I am a bit concerned the metal pin at the base needs to come out… which I think I will struggle to do.

James
5 May 2016 at 00:46 #237551
Ady1
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@ady1
The metal pin is fine, it's a tight fit only and the vehicle by which the two halves move in opposite directions

I modded my other tailstock with a hex bolt to make adjustments easier by using an allen key

The two sections can be tapped apart no problem once the hex bolt part is removed, I think it was a big cheese head screw originally

The even BIGGER screw above it is simply to keep the hex bolt from moving about(falling out), so the hex bolt can manipulate the upper tailstock section back and forwards on the lower section via the pin in the lower section

gl

Edited By Ady1 on 05/05/2016 01:01:37
5 May 2016 at 00:59 #237552
Ady1
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@ady1
If you can, extract the two vertical studs which are driven into the lower casting

Then things are even easier

Double up the nuts, and unscrew the stud by using a spanner on the lower nut

Then it's a case of… dink dink dink dink…

Edited By Ady1 on 05/05/2016 01:15:36
5 May 2016 at 01:52 #237554
Ady1
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@ady1
The metal pin is driven into the hole , it quite literally hammers into that hole and does nothing else except sit there and is a simple "leadscrew nut" in the lower casting which facilitates the movement of the upper casting

After all these years I actually found the original bits… holy smoke.

Its a square head screw and a metal pin

Edited By Ady1 on 05/05/2016 01:54:07
5 May 2016 at 02:13 #237555
Ady1
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@ady1
So get the square headed screw out, then get the studs out (removing studs is optional but makes things easier), then you can safely part your two castings

Edited By Ady1 on 05/05/2016 02:17:37
5 May 2016 at 11:34 #237595
James Jenkins 1
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@jamesjenkins1
Hi all,

Thanks so much for your help everyone. I was over thinking it I think. It is all cleaned up and running smoothly now.

Cheers,

James
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