Thread: No luck removing chuck

That worked on my Hercus 9 inch.

Jordan

Mike,
I take it you have not got the machine running yet?

Ewan

Mike-
Any suggestions/comments from the Hendey folks on PM site or Hendeyman? This stuck chuck seems serious.
Keep us all posted on this saga, please. I hope I never get in the situation, but am curious how you solve it just in case.
Regards,
Michael

I've also successfully removed a stuck threaded chuck by chocking it to the bed and momentarily switching on in reverse. Worked after several attempts. No gears engaged, just belt drive from motor! (not to risk breaking teeth)

Jordan

Can you remove the chuck from the backing plate it might make it easier to remove

Is it by some chance a left hand thread.

With the slots that are in the section between the chuck and headstock is there more bruising on one side than the other.If there was this could indicate the direction of rotation for removal.

Have you attempted to place a suitable piece of material across the jaws to lock the chuck from rotating whilst using your C spanner to unscrew from the spindle.

Is the section with the slots bolted to the back of the chuck.

Even better how about a few pics of the chuck and backplate, nose etc....just for us to drool over, i mean maybe be able to help with more suggestions.

I would be using a 10lb hammer at this stage...On a 1m length of hardwood timber in the chuck jaws...

Greetings chaps. It sounds as though the beastie is well and truly stuck. I am not familiar with the brand of this lathe but when I have come up against this problem I have used a piece of 2 inch wide X 1/2 inch thick steel placed in between the jaws of the chuck. Tighten the jaws so there is not too much play and give to outer end of the bar a smart rap with a persuader. Diplomacy is required if one does not want to damage the chuck.Some means of holding the spindle is also desirable. Best of British with it. Yours 4-6-4.

Originally Posted by pipeclay

Is it by some chance a left hand thread.

With the slots that are in the section between the chuck and headstock is there more bruising on one side than the other.If there was this could indicate the direction of rotation for removal.

Have you attempted to place a suitable piece of material across the jaws to lock the chuck from rotating whilst using your C spanner to unscrew from the spindle.

Is the section with the slots bolted to the back of the chuck.

Yes the chuck itself is held to the back plate ( section with slots ) by screws . I will look into removing the chuck itself from the back plate and thus only have the rear section to remove ( as Welder suggested ) .

it is a normal RH thread , the face plate and the other bits are RH thread .

not sure what you mean about placing material across the jaws because the chuck and C spanner slots are not seperate ? At the moment .

I will take a few more pics

Stand by ...........MIKE

There are phillips head screws holding the chuck together ..not much room there to get a screwdriver in there

Originally Posted by morrisman

There are phillips head screws holding the chuck together ..not much room there to get a screwdriver in there

Hi Morrisman, still doin battle eh.

Are there any screws in the front of the chuck. The screws you have shown look like they are the ones for splitting the chuck(opening it up). The chuck itself may be held on to the backing plate(in this case, the bit with the spanner slots in it) by screws from the front.

Cheers.

If I'm not right, then I'm wrong, I'll just go bend some more bananas.

Originally Posted by Log

Hi Morrisman, still doin battle eh.

Are there any screws in the front of the chuck. The screws you have shown look like they are the ones for splitting the chuck(opening it up). The chuck itself may be held on to the backing plate(in this case, the bit with the spanner slots in it) by screws from the front.

Cheers.

If I'm not right, then I'm wrong, I'll just go bend some more bananas.

yes your correct LOG

I removed the 3 large screws from the front ..PRESTO the chuck came off the hub

Dont know If I have gained anything though

IDEAS please

Mike have you tried heating the backplate? I'd put the chuck back on, use the preferred "persuasion" instrument of choice, and get as much heat as you're game onto the backplate. It may expand it enough to let go.

Pete