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Unread 09-01-2011, 11:23 PM   #1
My03tj
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2000 TJ Wrangler 
 
Join Date: Feb 2010
Location: Union City
Posts: 39
Front caliper bolts striped

I really need help bad. I was changing my brakes and the driver caliper bolts are stripped. I tried drilling one of the bolts and the drill bit broke in one of the groves. Can someone help me out in how to either remove the bolts or even the rotor without removing the brakes. Need to get the jeep running by Sunday.

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Unread 09-02-2011, 04:13 AM   #2
I8AHUMR
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1993 YJ Wrangler 
 
Join Date: Apr 2009
Location: Dayton, OH
Posts: 528
Try soaking in pb blaster for a while, heat it up, and potentially use vise grips. try letting the pb soak overnight. Try several cycles of pb and heat.
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Unread 09-02-2011, 04:35 AM   #3
little_Jeep
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Based upon what you are saying, the bolt (treads) are not stripped, but the head of the bolt is rounded off..... correct?

If you have a friend with a welder, weld an old nut to the rounded off head, let cool, then use wrench to remove bolt. Your local auto parts house should have a display rack with all kinds of brake hardware. This bolts should be on that rack.
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Unread 09-02-2011, 06:04 AM   #4
Alfons
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1992 YJ Wrangler 
 
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Quote:
Originally Posted by little_Jeep View Post
Based upon what you are saying, the bolt (treads) are not stripped, but the head of the bolt is rounded off..... correct?

If you have a friend with a welder, weld an old nut to the rounded off head, let cool, then use wrench to remove bolt. Your local auto parts house should have a display rack with all kinds of brake hardware. This bolts should be on that rack.
I agree, the heat from the welding will usually be enough to break the seized threads and the nut welded to the head will allow you to turn the old bolt. Before you start the welding, disconnect the battery and have the replacement bolts available to replace. For other work on the jeep, use sockets that fit the bolt - don't use adjustables or open end wrenches (these can spread enough to round the head) on bolt heads that haven't been moved for a long time.
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Unread 09-02-2011, 06:22 AM   #5
little_Jeep
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It's common for people to over tighten these bolts.... there is really no need for them to be upper tight. As long as the bolt doesn't back out completely, the caliper isn't going to come off. The brakes aren't going to fail.... I don't know the correct torque, but you only need the bolts to be tight enough that they won't vibrate lose.
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Unread 09-02-2011, 06:29 AM   #6
Berniebikes
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1988 YJ Wrangler 
 
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If you don't have a welder, use these, it did the trick for me. The extractors have a spiral grip reverse thread that tightens on the bolt head when you turn counter clockwise. When you go to replace those bolts you will be looking for a M12 1.25 pitch 35mm long, hardened to the metric equivalent of a grade 8 (cant remember what that is called). I couldn't find one so I ended up using a 40mm long bolt with two washers as spacers which I got thru fastenal.
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Unread 09-03-2011, 04:28 PM   #7
My03tj
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Berniebikes I bought those and it worked perfectly. Best 20 dollars ever. Thanks for the help.
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Unread 09-04-2011, 12:37 PM   #8
Berniebikes
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Glad it worked for you. Good luck on finding a replacement bolt.
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