Stem and fork frozen

[kim_dude]

Trying to break down a bike to repaint it for my daughter and the stem and fork are frozen together. I've soaked it in PB Blaster for a few days and applied tons of torque but cant get it to budge. Any thoughts?

 

[ratcycle]

chuck it up into a vice, and heat it up until it's red and take big wrench to it.

 

[user 135]

Is the stem steel or alloy( if so, use ammonia). Is the wedge at the bottom of the stem bolt free of the stem?

Heat may help break the corrosion.
Twisting with a longer bar.
Beating the stem upward with a hammer (make sure to have the handlebars still inserted).
Insert a long rod from the bottom of the fork tube near the fork crown, then beat with a hammer

Final technique: cut the stem off above the fork tube. Look for another fork and stem.

 

[mitchelangelo]

I just had a stem bolt on an old Spaceliner twist off. Dropped a #3 screwdriver in the bolt hole and knocked the wedge loose. Then used a wood block and hammer to drive the stem up.

 

[kim_dude]

Alloy stem, the wedge is still attached but lose from the stem (i hammered the pin down to released it). I'd rather not have to cut it up.

 

[mikeeebikey]

Is the stem steel or alloy( if so, use ammonia). Is the wedge at the bottom of the stem bolt free of the stem?

Heat may help break the corrosion.
Twisting with a longer bar.
Beating the stem upward with a hammer (make sure to have the handlebars still inserted).
Insert a long rod from the bottom of the fork tube near the fork crown, then beat with a hammer

Final technique: cut the stem off above the fork tube. Look for another fork and stem.

You are exactly right about alloy and amonia.
If it's alloy and it will not remove, cutt the thing off at the fork steer tube, then drill it progressively bigger until it comes loose.

 

[kim_dude]

Is the stem steel or alloy( if so, use ammonia). Is the wedge at the bottom of the stem bolt free of the stem?

Heat may help break the corrosion.
Twisting with a longer bar.
Beating the stem upward with a hammer (make sure to have the handlebars still inserted).
Insert a long rod from the bottom of the fork tube near the fork crown, then beat with a hammer

Final technique: cut the stem off above the fork tube. Look for another fork and stem.

You are exactly right about alloy and amonia.
If it's alloy and it will not remove, cutt the thing off at the fork steer tube, then drill it progressively bigger until it comes loose.

Now that you've mentioned it I had a trash can rescue that was an aluminum frame, alloy stem that I had to cut because it was frozen.