Need help with 1/2" bosch transmissions

[John Gutmann]

I have some 1/2" bosch drill motors and transmissions that I am trying to use for a project of mine. The problem is that there is a aluminum hex piece on the output shaft that I need to somehow get off. But I have tryed almost everything I can think of to get it off. Which is basically just heating it up and craking on it all night.

I don't know if you guys know what I am talking about so I will try to get pictures up ASAP.

-John

[Madison]

That sounds like the adapter provided in the kit of parts years ago. Perhaps this goes without saying, but -- well, the adapter was held in place with a left handed screw into the end of the drill's output shaft -- have you checked to make sure that screw isn't present?

The drill's output is threaded. You ought to be able to unscrew it pretty easily.

[John Gutmann]

Originally Posted by M. Krass

That sounds like the adapter provided in the kit of parts years ago. Perhaps this goes without saying, but -- well, the adapter was held in place with a left handed screw into the end of the drill's output shaft -- have you checked to make sure that screw isn't present?

The drill's output is threaded. You ought to be able to unscrew it pretty easily.

Yes that left handed screw is deffinately out. And that is the only way I have tryed taking it off. By unscrewing it.

The next hing I try if I dont get any working ideas from ehre is to take an old 9/16" socket and cut a few slits in and put that on the gear side.

-John

[sanddrag]

can you not disassemble the transmission with that thing on it? If you get way down inside to the last stage, you should be able to grab the output from the backside/inside.

[John Gutmann]

Originally Posted by sanddrag

can you not disassemble the transmission with that thing on it? If you get way down inside to the last stage, you should be able to grab the output from the backside/inside.

Tryed it, I don't know why any one would try without taking it apart. But yea it is hard to grip what is in there....No room.

I posted pics but they are not up yet. I really don't know what to try. They things are stuck on good.

-John


EDIT:
http://www.chiefdelphi.com/media/photos/28672?
http://www.chiefdelphi.com/media/photos/28673?

I also tryed my previous idea with the sockdt and it worked good. I placed the hex side into a vice, and it still took about 100 pounds of force on a 12 inch wrench to get that bad boy turning.

[Kevin Sevcik]

For future reference, in case you ever have something aluminum stuck on something not aluminum and you're REALLY desperate to get it off and have no other options, you could try mercury: The Amazing Rusting Aluminum
You'd basically scratch up the aluminum and put mercury on the fresh scratches.

Kids, don't try this without qualified adult supervision.

Caveats: It's likely to be slow with the amounts of mercury you'd likely scavenge from thermometers or barometers. Also, it's mercury. Elemental mercury is not the instant death like organic mercury compounds from chemical plants, but it's not particularly nice. I'd recommend good thick disposable gloves and a disposable, non aluminum container to let the reaction happen in. I'd also recommend doing this outside and not hanging about while it happens and the mercury is slowly evaporating into mercury gas. Finally, if you DO ever go this route, you're responsible for proper environmentally conscious clean-up. Seal the gloves, container, and leftover aluminum in an airtight bag and take it to a proper hazardous waste collection site.

Again, this is a solution for the terminally desperate, and you should make sure you cover all appropriate bases before taking it.