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I have an old craftsman drill press. Model #113.213090:

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and I've noticed the chuck that I have with it really starts to slip off drill bits, even if I try to crank it tight. So anyhow I went to replace the chuck. The chuck on it has these markings on it:

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Which some quick googling told me means it has a j33 taper. So i went and bought this chuck for an upgrade:

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So now the trick is to get the old chuck off. Youtube videos tell me its often either a removal key or you sometimes just kinda whack it with a mallet. Per the manual for the drill, I think its the whack option:

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Heres where I'm stuck:

A couple taps on each side with a mallet after opening the jaws as wide as they go and nothing is happening at all. Sure, I could whack a little harder (to the point where the whole machine would wobble) but I dont want to do any damage. Are there any tricks I dont know about? Also, do I have a compatible upgrade chuck like I think I do?

Update:

After enough ‘whacking’ (listening to the manual and comments), this whole thing fell out:

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But now I have no idea how to separate that spindle (is that what it is?) from the chuck in order to attach the replacement: enter image description here

Joe Crozier
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    The older it is the more taps it probably needs. It might even need good wacks before it lets go. – crip659 Nov 25 '22 at 22:17
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    If you are going to hit it harder, you could consider holding a piece of scrap wood against the chuck and hitting that. It can be hard to reliably hit something little like a chuck; at least for me. – Willk Nov 25 '22 at 22:31
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    I was using a piece of scrap wood already. Tomorrow morning I’ll get a little harder with the taps and report back – Joe Crozier Nov 26 '22 at 00:21
  • @crip659 well, update above but still stuck – Joe Crozier Nov 26 '22 at 19:16
  • Check the inside of the chuck to make sure it does not have a screw holding it. At least now you have more space for tapping. – crip659 Nov 26 '22 at 19:24
  • @crip659 I’d see that screw from the bottom correct? I.e. where drill bit goes in? If so, I definitely don’t see any. Is the chuck just supposed to kind of “hang” on the spindle? – Joe Crozier Nov 26 '22 at 19:34
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    If no screw then it hangs, but it is a taper fiction fit so is on quite tight. Usually to put them on recommended to give a couple of taps instead of just pushing them on. – crip659 Nov 26 '22 at 19:39

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