I found this in my toolbox and i dont know what it is or where it came fom?
Proto #4515

 

Looks like some sort of stud puller.

 

What kind of studs?
I cant see how it would work on wheel studs?

 

3/8" manifold studs and the like?

 

It does look like a threaded (into the block, head etc.) stud remover. The wedges grip the stud so you can remove it. I have a Craftsman the works on a cam principle. Is that a "Proto" ? can't make it out in the pic.

 

It is a stud extractor for screw in type studs. You put it over the studand fit the wedge so as you unscrew the stud it gets tighter. I've used them on some of the old rocker arm studs. Really more trouble than it's worth. I can do better with a pair of vice grips or a pipe wrench.

 

Nice to have when you don't have the room for vise grips or a pipe wrench though- I know I could have used one of those a few times.

 

Thanks for the replys.............

 

You only use one wedge at a time. It goes through the hole at the bottom sideways. The nice thing about the Proto version is you can install studs by reversing the direction of the wedge. The pin is used to store the 2 wedges inside the bore. I use a cotter pin for mine since the pin was missing.

 

If it goes through the hole sideways , why is there a place for a ratchet?
If you tryed to use the rathet you would be turning the socket the wrong way?

 

The socket goes over the stud like a spark plug socket would, then you put the wedge in through the hole in the side. The wedge can go either way so you can loosen or tighten the stud.

 

Ahhhhhh gotcha now.
Thanks this things been driving me crazy ever since I found it in my tool box.
Now only if someone would tell me how it got in my tools?
Ive never seen it before?

 

Parasomnia Kleptomaniac