Thread: Remove electric black and decker jacobs chuck

That looks like one of the Black & Decker “Professional” series from the late 1980’s/early 90’s. Does it have a reverse switch? If not then the 3/8-24 means it has a 3/8” UNF normal right hand thread; it should simply unscrew from the shaft although it’ll probably need a hefty whack.

I can see that the bearing and chuck have been damaged; going by the fact it is easily 30 years old and they weren’t particularly ever really good to begin with can I ask why you’re bothering with it? $79 at the Big Green Shed will get you an AEG corded 750W replacement that will urinate over the B&D in every way.

Thanks for your reply. It doesn’t reverse = 2 speeds and hammer drill option. I am interested in swapping the chuck, it runs well . Just trying not to be wasteful.
If I can’t salvage it then may have to visit the big green box and get a new drill as you suggest .

Originally Posted by aljenit

2 speeds and hammer drill option.

You sure? I'm not seeing anything that looks like a hammering mechanism in there. Although it could be under all that grease!

Parts diagram indicates screw on.
Black & Decker BD142 Type 1 Hammer Drill Spare Parts - Part Shop Direct


3/8 x 24 unf
Black & Decker X66301 Male Chuck & Key 13Mm Use Sta66301 - X66301 | Tools And Parts Direct

Thanks Droog,
I might try some heat on it. Much appreciated diagram.
I’ve drenched it in INOX and tried the usual loosening tricks without luck . 30years stuck!

we just used to put the chuck key in it and give it a sharp wack with a hammer

Originally Posted by Zsteve

we just used to put the chuck key in it and give it a sharp wack with a hammer

I’ve really tried it’s stuck solid . Thanks for reply

If I were you I’d persist with the sharp whack. Even if you have to use a sledge hammer rather than an ordinary hammer to make that whack.

I was in your situation with a Bosch drill. I couldn’t get the chuck free. Perhaps I didn’t try hard enough. So, I took it to an electric tool specialist. The guy across the counter seemed pleased as punch when he took it from me. He could do it while I waited. He came back with a sour face. He’d stuffed my drill. His solution that always worked for him (that didn’t work this time) was to use an impact driver to free the chuck.

I don’t know what he did but when plugged in and switched on the drill sounded as though one of the bearings had cracked, gears lost a tooth, or a brush mount had broken off. No idea. And he didn’t get the chuck off.

I was offered a new drill at a discounted price. He had me over a barrel. I bought the new drill.

And the moral of this story: don’t use an impact driver, or seriously consider buying something new.

Get a larger chuck. Consider a keyless chuck too.

Sound advice . I’ve never even considered using an impact driver !! Gross overkill.
I’m soaking it and will then try and loosen it again with a mighty whack.
After that … I’ll abandon the chuck off mission.

I've changed 2 different ones

they both had a left hand thread screw at the base of the chuck inside
the screw had to be removed before trying anything as mentioned

might not be the same in this case

Hodgo

Originally Posted by Hodgo

I've changed 2 different ones

they both had a left hand thread screw at the base of the chuck inside
the screw had to be removed before trying anything as mentioned

might not be the same in this case

Hodgo

Thanks , did yours have a reverse option.

Mine doesn’t reverse. If there is a screw down there, it’s completely sheared off and unrecognisable as a screw head!!

If you’re going to replace the chuck, maybe you could cut through the old one with an angle grinder just above the bottom of the bore in the chuck. Then if there is a mangled screw in there you can cut the head off it. If you keep trying to remove it with shock tactics you might break a gear tooth.

Originally Posted by aljenit

Thanks , did yours have a reverse option.

Mine doesn’t reverse. If there is a screw down there, it’s completely sheared off and unrecognisable as a screw head!!

they were both reverse models, just looking at the parts diagram yours doesn't appear to have the screw

It sounds like it is ready to go to drill heaven

there are many good choices out there to replace it with

I cant remember the last time I used a 240v drill, opting for the cordless everytime, but I still have a 240v one (probably seized)