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i work in a shop, and the other day, the mechanics were changing ujoints out of a chevy, with a solid d44. instead of pounding or pressing the joints out, the torched em. they said the shafts metal was too soft to be pressed on. i would think that this high heat would distort/weaken the shaft. am i correct or is the torch the best way to get em out?

justin
 

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you can gently heat up a shaft ear but if it gets too hot it will aneal itself and become weak and soft. Thats was their excuse they probly heard when they saw someone cutting corners
 

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I've had to torch out U-Joints before... once they get all rusted to hell in there, the easiest way to get 'em out is to cut the cross and drive the caps in...
Even then I've still bent the shaft ear once because of how rusted in the damn things were...
 

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Some u-joints, instead of having a metal clip holding them together come from the factory with hard plastic that is heated and forced into the joint to hold it together and if you heat it with a torch when you are trying to remove it, the plastic will literally "snake" out of the joint, allowing you to press it apart.
 

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I've seen it done a few times, usualy results in benting the ears in some..

I usualy just crank them down with my lil' 6 ton press, and if they won't push out, then heat them up with map gas, and hit the joint with a hammer a few times, never seen one that won't press out..
 

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Lexox said:
Some u-joints, instead of having a metal clip holding them together come from the factory with hard plastic that is heated and forced into the joint to hold it together and if you heat it with a torch when you are trying to remove it, the plastic will literally "snake" out of the joint, allowing you to press it apart.
Yup.. mid-80's chevy's have this done to them from the factory..
 
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