Anyone good with stuck bolts?

[kdog_x]

I rented a balancer installation tool the other day from the Auto Parts store. There are two parts to it. One big threaded rod that holds the plate installing the balancer, and a smaller threaded rod which gets threaded into the nose of the crankshaft to keep it centered. After reinstalling the balancer I can't get the two pieces to come back apart (they thread into each other). On one end I can put a 5/8" socket -- so thats not the problem. But on the smaller piece there is just a slot in the end for a screwdriver. I have a screwdriver that fits it but I cant get it to budge.

So far I've tried boiling it, leaving it in ice for an hour, and even heating the small end with a torch and nothing seems to be working. Anyone know any tricks?

Here's some pics of what the assembly looks like.

http://www.wowway.com/~kevinrush1/POS.JPG

http://www.wowway.com/~kevinrush1/POS2.JPG

 

[TheUser]

maybe find someone w/ an impact and throw some compressed air on it. Other than that, spray it w/ wd-40 and let it sit for a day or so. That's diff. than the balancer puller/installer I rented...hmm

 

[kdog_x]

Yeah, the main problem is trying to keep the end with the slot in it from spinning. Can't seem to budge it just using a screwdriver.

 

[*HOOFHEARTED*]

it looked to me like the longer thin bolt had a hex type end on it did it not?
if it does try putting that small end in a vice and then try spinning the collar down with the wrench with out twisting the small end off.

HEAT and VIBRATION are usually the two ways to get these types of thing apart. Force usually only ever breaks bolts

 

[kdog_x]

thanks for the help, but I just took it back to them and they sent it back to the manufacturer as a defective part. Best part about rented tools