How to remove a stuck chuck was Need a Jacobs 33BA chuck

[n8n]

Good evening all

I have an old Milwaukee right angle drill that a friend's retired electrician father gave me. I lent it to my housemate because he needed to make some big holes in a stump to pour in some kind of biological stump-b-gon. Anyway, he managed to get this big self feeding auger bit stuck and broke one of the chuck jaws (good thing he didn't break his damn arm!) Chuck is a Jacobs 33BA, 5/8-16 mount. Seems those things are eye wateringly expensive but I found this

Drill Chuck, Keyed, Steel, 1/2 In, 5/8 - Power Lathe Accessories - Amazon.com

Drill Chuck, Keyed, Steel, 1/2 In, 5/8 - Power Lathe Accessories - Amazon.com

www.amazon.com

is that an acceptable chuck? I realize it's made in CN not Hartford, Conn. but my housemate has actually used this drill more than I have, and also it's likely older than he is. He wants to pay for the replacement and I'd feel much better getting him for $26 and not $100 plus.

Thanks!

 

[goldtang]

i had a look at the link and the chuck shown has a straight mount not threaded.
this is from the jacobs catalog page 1245 http://www.jacobschuck.com/common/s...obs Section of IHT Catalog-ATG USA Market.pdf

3326A
0.6250 STRAIGHT MOUNT
ROHM make good chuck as well

 

[n8n]

OK, I now have more chucks than I could possibly want; the original was so beat that a repair kit was not looking like a good option, ended up buying a lot of *7* off a certain auction site that are cosmetically blemished - but still all are in better shape than the original one (I believe it was purchased new something like 40-50 years ago and used daily by a commercial electrician, who gave it to me after repairing another similar drill for him. One tooth is broken off the outer ring, and all the chuck key holes are very egg shaped. Really it's time for a complete new or at least less used chuck. I guess he used these hard, I remember installing a new chuck on the drill that he kept as well. Testament to Milwaukee that they hold up as well as they do.) I figure I'll sell all but one or two of the leftovers, total investment was actually less than a repair kit if you can believe that.

NOW how do I get the old one off? The LHT screw is missing, I didn't even have to take that out, but the old 1/2" allen key in the chuck and whack it with a hammer thing isn't working. Jam a screwdriver in the motor fan and hope it doesn't break? or is that asking for trouble?

Yes, I know this thing is well past its best before date, but it actually worked for my housemate where no other drill that either one of us had did (until the chuck jaw broke of course)

Then I gotta decide if it's worth $20 for a cord with a real strain relief to replace the shock hazard that's on there...

 

[Davefr]

NOW how do I get the old one off? The LHT screw is missing, I didn't even have to take that out, but the old 1/2" allen key in the chuck and whack it with a hammer thing isn't working. Jam a screwdriver in the motor fan and hope it doesn't break? or is that asking for trouble?

Get the largest hex bit socket and chuck it into the drill. Then use an impact gun on the socket.

 

[KnurledNut]

I had a stubborn one on a RA drill.

Tried the L-key + hammer method. Nothing.
Tried the impact + bit socket method. Nothing.
Tried heat and penetrant. Nothing.
Ended up putting the long arm of the L-key in the drill and then clamped the other end of it in a pipe chain vise. Low gear. Being a RA, i used the tool itself like a breaker bar and it came loose.

I pressed that chuck apart, repaired the damage and reused it.

Oh and heres a little cheap hack for a cord strain relief:

 

[Mandres]

I had a stubborn one on a RA drill.

Tried the L-key + hammer method. Nothing.
Tried the impact + bit socket method. Nothing.
Tried heat and penetrant. Nothing.
Ended up putting the long arm of the L-key in the drill and then clamped the other end of it in a pipe chain vise. Low gear. Being a RA, i used the tool itself like a breaker bar and it came loose.

I pressed that chuck apart, repaired the damage and reused it.

Oh and heres a little cheap hack for a cord strain relief:

That's the technique that worked for me. Clamp the drill with the Allen key against something immovable and run the drill in reverse. Should thread the chuck right off.

 

[n8n]

I had a stubborn one on a RA drill.

Tried the L-key + hammer method. Nothing.
Tried the impact + bit socket method. Nothing.
Tried heat and penetrant. Nothing.
Ended up putting the long arm of the L-key in the drill and then clamped the other end of it in a pipe chain vise. Low gear. Being a RA, i used the tool itself like a breaker bar and it came loose.

I pressed that chuck apart, repaired the damage and reused it.

Oh and heres a little cheap hack for a cord strain relief:

I like it! On closer inspection though the entire cord is hardened and starting to crack so I just ordered the replacement part. @#$%@#$ "free" tools are expensive LOL

I did get the chuck off. Turns out the LHT screw was completely missing, but even so my Milwaukee "Fuel" electric impact could not get the chuck off. Running in reverse did nothing either - the whole purpose behind digging this one out of the stash was so my housemate could get a stuck auger bit out of a stump, it was on there! I ended up throwing a hex key in one of the vents and using a breaker bar and a hex bit socket to get it off. I am also going to repack the gearbox and clean it up a little while I'm messing with it so if I bent the fan I can tweak it back. Right now I'm still waiting on the replacement screw and the new cord to show up.