I have been trying to free a rusty stud from its hole in a subframe on the XJR and am at a loss. The other side popped off so I know how it is supposed to come apart. I have soaked it in PB Blaster and Deep Creep for 3 DAYS! I put a lot of heat into it with a propane torch last night. No idea.
I've had to graduate to using a MAPP gas torch on a frozen exhaust manifold stud once, and it took several heating (to the point the stud was glowing red) and cooling cycles to do it. Just have to be very careful of anything nearby that could be damaged by the heat or catch fire.
But seriously, +1 for what eastsidemav said. You can also try cooling the bolt with an upside-down can of computer duster after heating the surrounding area.
Is this a pressed in stud you're trying to press out? Threaded in and trying to thread out? Are you replacing this or reusing it?
If you're trying to unscrew it, weld a nut to the stud. The heat alone is often enough to substantially weaken the corrosion bond.
It is pressed in through a metal insert inside a rubber bushing. It 'should' slid out as it is held in with a nut. I really need to keep it as it is a weird screw in (the other side) stud with a large midshaft hex (at least 22mm). It is a huge shaft and I am afraid to try and replace it. A long enough bolt and washers would do it though so it may come down to a reciprocating saw.
Well...I am still touting the miracle of the acetone and ATF mix after it got me out of a tight spot that heat and commercial penetrants could not.
Post a pic of the offending situation. Do you have access to compressed air?
Youtube has a lot to say on the subject of control-arm bolts stuck in place.
What about putting an impact on it and giving it a tighten brap, then a loose brap, back and forth for a while. You can often do the same with a breaker bar.
Or, my favorite redneck technique is to put the breaker bar on and hit the handle with a hammer. "Impact" wrench, get it?
"It is pressed through a metal insert inside a rubber bushing"
How many threads have we had about this lately
? Seems to be a recurring theme.
You can save the bolt if you can sacrifice the bushing. You might be able to save the bushing if you sacrifice the bolt.
Ok, got it out. Had to use the big torch and a lot of pressure but it finally tore across the bushing. Then I had to cut the inner bushing/metal sleeve off the stud. Next up is removing the stud the requires a 30mm 4 in deep socket.
You'll need to log in to post.
