I was trying to remove the brake calipers from a 306 axle and managed to snap off a bolt just below the surface. First job was to build up a stub on the bolt using my tig welder.
I cooled it down and tried turning the stub with vice grips, no movement! Then I noticed that a blob had ran onto the axle, welding the stub to the axle.
So it was out with the die grinder to cut off the blob. Once that was done the stub was easy to screw out, only finger tight!
The remains of the broken bolt is sitting on the axle. This was an M12 12.9 grade bolt so I'm guessing it was fitted with a large impact wrench and over torqued. I was pulling hard on a 3' breaker bar when it broke so it was very tight!
I cooled it down and tried turning the stub with vice grips, no movement! Then I noticed that a blob had ran onto the axle, welding the stub to the axle.
The remains of the broken bolt is sitting on the axle. This was an M12 12.9 grade bolt so I'm guessing it was fitted with a large impact wrench and over torqued. I was pulling hard on a 3' breaker bar when it broke so it was very tight!