Off with my Headstock (Super 7)

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Off with my Headstock (Super 7)

This topic has 5 replies, 5 voices, and was last updated 31 January 2013 at 08:51 by john fletcher 1.

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19 November 2012 at 22:23 #104169
SK3737 Super 7
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@sk3737super7
I have recently acquired an early Super 7, and am in the process of cleaning and refurbishing where necessary.

I've stripped down everything and am now left with the headstock still attached to the bed, but cannot undo the hex head bolts that hold it on.

I have tried my Bosch GDR which is rated to 105 Nm, but that won't shift them.

Any suggestions on how to remove them? Will heating or freezing help, and has anyone else had this issue? I suspect that the only way to get them out will be drilling, in which case I may leave well alone. I think that they have never been undone, and this lathe (SK3737) is early 50's so they've been in there nearly 60 years. Pretty much everything else has been straightforward to dismantle until now.

Thanks in advance,

Rick
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19 November 2012 at 22:23 #16933
SK3737 Super 7
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@sk3737super7
Removing a Myford Super 7 headstock
31 January 2013 at 01:43 #110542
daveb
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@daveb17630
Posted by SK3737 Super 7 on 19/11/2012 22:23:25:

I have recently acquired an early Super 7, and am in the process of cleaning and refurbishing where necessary.

I've stripped down everything and am now left with the headstock still attached to the bed, but cannot undo the hex head bolts that hold it on.

I have tried my Bosch GDR which is rated to 105 Nm, but that won't shift them.

Any suggestions on how to remove them? Will heating or freezing help, and has anyone else had this issue? I suspect that the only way to get them out will be drilling, in which case I may leave well alone. I think that they have never been undone, and this lathe (SK3737) is early 50's so they've been in there nearly 60 years. Pretty much everything else has been straightforward to dismantle until now.

Thanks in advance,

Rick

Yes, they are very tight indeed.

I used an impact driver, the cheap one you hit with a hammer, with an allen key fitted to a 1/2 inch socket. These are available from car accessory shops for a few pounds. Did the job very easily and without damaging the screws. 2lb club hammer works best.

Daveb
31 January 2013 at 07:47 #110547
John C
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@johnc47954
Agree with Dave B – I had to use an impact driver to undo mine. I made an allen key to fit from one of the bits that came with the tool. Don't forget to undo the tenon clamping screws (thrust screw, part no 2137/No 44 on the parts diagram) recessed into the front of the bed too!

Edited By John Corden on 31/01/2013 07:48:20
31 January 2013 at 08:51 #110550
Martin Kyte
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@martinkyte99762
When I did mine I was very reluctant to start thumping it with an impact driver. A well fitting Allen key with some extra leverage on the end is the way. They are tight but you will not break anything if the key fits the socket properly. I think I used a T bar with two bits of pipe.

regards Martin
31 January 2013 at 08:51 #110551
john fletcher 1
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@johnfletcher1
Unless you are having the bed reground why do you need to remove the head stock. Don't repair the unbroken. I have had my Super 7 with PCF and G/box bed reground and as the above reader have said, the screws are very tight. Don't forget they need to be put back just a tight,carefull how you go.Ted
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