LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Crank Hub STUCK

Old Jul 15, 2008 | 05:02 PM
  #16  
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Hate to say it,but you have a big mess there. I have never seen one so hacked up. Anyhows, try and put the ratchet on it and turn it. You may have to CAREFULLY drill it out.
Old Jul 15, 2008 | 05:07 PM
  #17  
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Do you mean a ratchet on the extension, because there is no way that is going to happe.
Old Jul 15, 2008 | 05:13 PM
  #18  
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Ok,then a drill should do the job.The big end of the extension is the part facing you.You should only have to drill that end out.I would start with a 5/16's'' bit and see if that wont do. Might need to use a 3/8''s after that.Then a magnet should pull it out.
Old Jul 15, 2008 | 05:30 PM
  #19  
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The hub is pretty much gone already. Do whatever you need to do to get it off, but just don't damage the crank snout.
Old Jul 15, 2008 | 06:56 PM
  #20  
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Ok thanks guys I appreciate it. Ill let you know what happens
Old Jul 15, 2008 | 08:46 PM
  #21  
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Looks to me like the head of the extension is stuck in the hole in the hub. I'd bet that the crank is fine but it looks (guessing from looking a blurry picture that the only way to get the extension out is when the hub is out of the car. can you continue forcing the extension through the hub? or are you about to break the puller?
Old Jul 15, 2008 | 08:51 PM
  #22  
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Have you tried taking a pair of vise grips and trying to "unthread" the extension from the crank?
Old Jul 15, 2008 | 09:09 PM
  #23  
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Need to get the hub off some how. A slide hammer might work since you can't use a puller anymore. You might be able to walk it off with a hammer and torch if you heat it up and tap on the ears. Once the hub is off hopefully you can get better access to the extension to pull it out.
Old Jul 15, 2008 | 09:26 PM
  #24  
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Well there is absolutley no way I can get to the extension with pliers, theres nothing to grab on the extension and I can only get my neddle nose in the hole. Anyways Im gonna get a better puller tomorow and try to continue with this. I really wish I could see into the future. I would have just replaced my opti and put the rockers in. I really hope it will be worth it when I hear that bumpstick in action. And I really need to look into this Slide Hammer I hear everyone talking about.
Old Jul 15, 2008 | 09:28 PM
  #25  
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I've got an idea. The three holes on the hub are threaded. You'll need to get some longer bolts that are threaded all the way, that fit the threads in the hub. I'm thinking you can use those three threaded holes to press the hub off the crank. The problem is you need to put something substantial in between the hub flanges and the timming cover/oil pan to spread out the load and keep it from cracking anything. 1/4" plates of steel come to mind. Maybe you can find some pieces at the hardware store. Whatever you use, it's got to be pretty beefy. Then thread the bolts in the holes and press against the steel to pull the hub off. You have to work slowly and evenly, like 1/2 turn on each bolt, but I think it may work.

Just a crazy idea...
Old Jul 15, 2008 | 09:31 PM
  #26  
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Or can you find a chunk of metal and fit it over the extension but in the crank hub? So your not pressing the extension deeper?
Old Jul 15, 2008 | 10:18 PM
  #27  
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I might be able to but the problem is the extension is pretty much the size of the hloe. So if I put a chunk of metal in there it will be pushing against the hub itself. So im not sure
Old Jul 15, 2008 | 10:46 PM
  #28  
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That's why I'm thinking you need to do the job without making that problem worse. Right now, there's probably some damage to the threads in the crank, but hopefully nothing that can't be undone. It's important to get the hub off without making that problem worse. A slide hammer may work, but it's going to take a rather large one and in the car, it's going to be hard to fit it in there.

By the way, a slide hammer is a rod with a wieght on it. You attatch the rod to the piece you need to remove, usually with some kind of jaws or adapter. Then you grab the weight with your hand and slam it away from what you are pulling. The end of the rod has a stop that the wieght hits and it's like hitting it with a hammer, only with the rod it acts like a guide. These things are usually about a foot and half long or longer, that's why it may be too long to get one in there to pull the hub.

Last edited by Granite00; Jul 15, 2008 at 10:48 PM.
Old Jul 15, 2008 | 10:52 PM
  #29  
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Yea I get what youre saying, I just cant get a mental image of it in my head. Not too good of an imagination I guess. I may re-read it tomorow when im in my right mind.
Old Jul 15, 2008 | 10:55 PM
  #30  
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I think a slide hammer is going to screw up the thrust/end play on the crank rendering the motor useless - I'm thinking possibly using a small cutting wheel and making a cut through the hub, maybe?

slide hammer/dent puller
http://www.northerntool.com/webapp/w...4163_200334163

Last edited by maverickmk; Jul 15, 2008 at 10:57 PM.

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