[modeleng] Re: Damaged 4 jaw chuck
- From: Allen Messer <al_messer@xxxxxxxxx>
- To: modeleng@xxxxxxxxxxxxx
- Date: Thu, 16 Dec 2004 13:22:34 -0800 (PST)
And make sure that the internal threads are spotlessly
clean. Dirt and grime in the threads will really make
mine tighten up very quickly.
Al Messer
--- alanjstepney <alan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
wrote:
> Yes. Take it apart. Not easy to do, but they do come
> apart in some way.
> Then examine all the parts to see what is bent /
> jamming / whatever.
> After that, it is easy.
> alan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>
> www.alanstepney.info
> Model Engineering, Steam Engine, and Railway
> technical pages.
>
> ----- Original Message -----
> From: "Dennis Rayner" <dennis.rayner@xxxxxxxxxxxx>
> To: <modeleng@xxxxxxxxxxxxx>
> Sent: Thursday, December 16, 2004 5:59 PM
> Subject: [modeleng] Damaged 4 jaw chuck
>
>
> Hi all,
>
> I have damaged the 4 jaw chuck which came with
> my very secondhand, very
> old ML7. The chuck didn't have a key - only an allen
> key and (I know I
> shouldn't have) I put a 12" length of copper tube
> over the key to make sure
> that the item being held wouldn't move.
>
> Now all 4 adjusting screws are very tight to turn,
> making it very difficult
> to feel just how much I am tightening the grip. If I
> remove the jaws, the
> screws are still quite stiff to turn so it seems I
> have damaged them rather
> than the jaws. I have spoken to the (very helpful)
> spares dept at Myford
> quoting all the ID I can get off the chuck and
> backplate in the forlorn hope
> that I might still get the screws but to no avail.
>
> The only thing I can now think of is to run the
> screws in and out using
> my cordless drill with some Valve Grinding Paste on
> the threads. Drastic I
> know but I wonder if anyone can think of a better
> approach?
>
> Christmas greetings to the group.
>
> It's fun to belong!
>
> Dennis
>
>
>
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