Removing a reluctant chuck from an ML7

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Removing a reluctant chuck from an ML7 Dragon 06-10-2008
Posted by Dragon on June 10, 2008, 7:22 pm
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 Following the saga of the broken back gears on an ML7, I'll admit using them
to remove chucks on mine.
After engaging back gear I put the chuck key in place and give it a whack
with my hand.
So far as I remember it's never needed anything more drastic.
However supposing that is not enough, is there a way of getting a chuck off
without risk to the back gears?

Henry



Posted by mark on June 10, 2008, 8:58 pm
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> Following the saga of the broken back gears on an ML7, I'll admit using them
> to remove chucks on mine.
> After engaging back gear I put the chuck key in place and give it a whack
> with my hand.
> So far as I remember it's never needed anything more drastic.
> However supposing that is not enough, is there a way of getting a chuck off
> without risk to the back gears?
>
> Henry

Yes there is ...
My south bend came with an expanding cranked handle that you fit into
the spindle tube at the gear end...it's a manual turning attachment.

Now, if I was to put the handle resting on blocks of wood ....you get
the idea ..

Will get you pics, if you so wish ...

Also, You can get expanding floor plugs ....the sort, that are meant
for holding machines down ........they also make a rubber type
ones ...ltttle less harsh....you could rig something up out of those..

All other methods...i think.... are not as direct acting....or could
be more damaging.

all the best..markj

Posted by ravensworth2674 on June 11, 2008, 6:31 am
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>
> > Following the saga of the broken back gears on an ML7, I'll admit using =
them
> > to remove chucks on mine.
> > After engaging back gear I put the chuck key in place and give it a whac=
k
> > with my hand.
> > So far as I remember it's never needed anything more drastic.
> > However supposing that is not enough, is there a way of getting a chuck =
off
> > without risk to the back gears?
>
> > Henry
>
> Yes there is ...
> My south bend came with an expanding cranked handle that you fit into
> the spindle tube at the gear end...it's a manual turning attachment.
>
> Now, if I was to put the handle resting on blocks of wood ....you get
> the idea ..
>
> Will get you pics, if you so wish ...
>
> Also, You can get expanding floor plugs ....the sort, that are meant
> for holding machines down ........they also make a rubber type
> ones ...ltttle less harsh....you could rig something up out of those..
>
> All other methods...i think.... are not as direct acting....or could
> be =A0more damaging.
>
> all the best..markj

You have a ML7 and the list of improvements and help in solving simple
day to day problems like stuck chucks is only a minute fraction. There
is at least two 'mandrel handles' published and legion about chucks.
Really, a beginner must have a ready suppy of information.There is a
kit for the handle dedicated ro the ML7 and Super 7's.
I feel that you should get around to having the books in your
possesion.
I am not the only one who has attempted- and failed to get information
on the internet.

Isn't it rather like having a car but being unwilling to pay for some
fuel to go in it?

Norm

Posted by Dragon on June 11, 2008, 7:50 am
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Thanks to Mark and Norm for drawing my attention to the mandrel handle.
I was aware of that device but have not found a need/use for it so far.
It never occurred to me that it would hold well enough to remove a chuck.
another thing to add to the list of things to do!
Norm, I don't have 'all' the books but am not completely without.
Sparey's Amatuer's Lathe and Ian Bradley's Amateur's Workshop are my usual
references and I had them before the Internet was widely available.
The question about broken back gears triggered this thread.
I've benefitted from other's questions - I wonder how many have done so from
mine?

Henry



Posted by Peter Neill on June 11, 2008, 8:11 am
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On Wed, 11 Jun 2008 00:22:38 +0100, "Dragon"

>Following the saga of the broken back gears on an ML7, I'll admit using them
>to remove chucks on mine.
>After engaging back gear I put the chuck key in place and give it a whack
>with my hand.
>So far as I remember it's never needed anything more drastic.
>However supposing that is not enough, is there a way of getting a chuck off
>without risk to the back gears?
>
>Henry
>

I have a shortish length of wooden batten, about 10-12" long, that I
grip in the chuck jaws, then spin the chuck backwards by hand so the
batten strikes the bed.
A couple of impacts and it usually came loose.

I haven't had to do this for quite a while though, as since the first
few times I now always make sure that both threads are clean and
lightly oiled before a chuck goes on.

Peter

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