Question about 1994 Buick Park Avenue
My harmonic balancer was making knocking noises so I replaced it. My brother didn't torque it all the way and when I crank it it sheared off the top of the key in the crankshaft.Now the key is extremely stuck. I have had 3 mechanics come by to check it out and no one has been able to get it out. I have bought picks, chisels, punches, even a dremel. I have run out of options. the last mechanic said i may have to get another motor because no one gonna want to fool with it. Is there something else that can be done?
I normally would not recommend doing this but if it is stuck that badly it seems like an "all or nothing" situation. You need to use an oxy- acetylene torch and heat the keyway (standard plumbers torch will not make enough heat). Do not heat it 'till it is glowing or it may damage the crank. After heat has been applied, use a punch at a 45 degree angle to the surface of the key and strike the punch as if you want to drive the front edge down into the slot.
The key should move back and up enough that you can grab it with vise grips..
Heating the crank likely will damage the front timing cover seal so expect to replace that before you are finished.
If that fails to work, likely you will need to replace the engine....replacing the crank will cost you more than that.
If you cannot get access to a torch, you can try the exact same thing cold. No reason it should be that jammed!
Posted on Jun 03, 2010
Remove crankshaft and get a hydraulic press to force off the pulley,at least you will save the crank.slightly cheaper than a new brother......
Posted on Jun 03, 2010
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Posted on Jan 02, 2017
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