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Author Topic: Trick for Stuck Caliper Bolts  (Read 8107 times)
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Trey
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« on: 05/12/12 01:45 PM »

I learned a neat trick for getting stuck caliper bolts loose from the caliper.   I needed to replace the rear rotors today.  I had a 15" breaker bar with a socket, and I just couldn't break loose the rear caliper bolts on my 2004 Av 4x4.  I was banging on the breaker bar with a hammer and eventually broke the break bar near the socket.   banghead   

The high school student a couple doors down gave me a great idea...
Put your 1/2 inch socket wrench on the bolt and leave it stuck out to the side.  Put your floor jack underneath the handle and crank it up.  The bolt turned like butter.   Shocked  This was easy for the driver side.  For the passenger side, I had to flip the wrench over the axle and jack it up from the rear using a short crow bar between the jack and the wrench, but it worked out. 
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2004 Silver Birch AV 4x4, Leather, CD-Changer, DVD, chrome steps
MODS: TRUXXX Leveling Kit, HIDs, Full-Time Amber DRLs, All-8-on-Hi-Beams Mod, A/C Vent LEDs, Metalcast Engine cover, Headlight and Backup Light Strobes, Sail Panel LEDs, 81-LED Lighted Bowtie, Color-changing LED Headlight Accents, Black Flames, 20" Dub X-Wang Wheels, Power Locking Tailgate, Train Horns, Line of Fire, Smoked Taillights.
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« Reply #1 on: 05/12/12 02:33 PM »

Glad you got it off, I used a impact wrench
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« Reply #2 on: 05/12/12 02:52 PM »

There was no way I could see to get the impact wrench back there.  I tried an impact socket wrench, but that was useless.
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MODS: TRUXXX Leveling Kit, HIDs, Full-Time Amber DRLs, All-8-on-Hi-Beams Mod, A/C Vent LEDs, Metalcast Engine cover, Headlight and Backup Light Strobes, Sail Panel LEDs, 81-LED Lighted Bowtie, Color-changing LED Headlight Accents, Black Flames, 20" Dub X-Wang Wheels, Power Locking Tailgate, Train Horns, Line of Fire, Smoked Taillights.
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« Reply #3 on: 05/12/12 03:04 PM »

Good Idea!!! One things for sure, somethings going to give doing that!!!
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« Reply #4 on: 05/12/12 03:13 PM »

I took the whole bracket out with the caliper still in it.
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« Reply #5 on: 05/12/12 03:43 PM »

I took the whole bracket out with the caliper still in it.
Yeah, I was actually talking about the bracket bolts.  The caliper bolts to the bracket, and the bracket bolts to the hub.  The big 3/4 bolts that hold the bracket on are called the rear caliper bolts.  Those were the ones that were stuck.
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2004 Silver Birch AV 4x4, Leather, CD-Changer, DVD, chrome steps
MODS: TRUXXX Leveling Kit, HIDs, Full-Time Amber DRLs, All-8-on-Hi-Beams Mod, A/C Vent LEDs, Metalcast Engine cover, Headlight and Backup Light Strobes, Sail Panel LEDs, 81-LED Lighted Bowtie, Color-changing LED Headlight Accents, Black Flames, 20" Dub X-Wang Wheels, Power Locking Tailgate, Train Horns, Line of Fire, Smoked Taillights.
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« Reply #6 on: 05/12/12 03:47 PM »

Great idea, thanks for sharing
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« Reply #7 on: 05/12/12 07:34 PM »

You can also coat them with WD-40 and let them sit for about 20 mins....  that's what I did...  followed by the breaker bar and some brute force...
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« Reply #8 on: 05/13/12 06:12 AM »

You can also coat them with WD-40 and let them sit for about 20 mins....  that's what I did...  followed by the breaker bar and some brute force...
I used PB Blaster and let it sit for 30 minutes before breaking my breaker bar.
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2004 Silver Birch AV 4x4, Leather, CD-Changer, DVD, chrome steps
MODS: TRUXXX Leveling Kit, HIDs, Full-Time Amber DRLs, All-8-on-Hi-Beams Mod, A/C Vent LEDs, Metalcast Engine cover, Headlight and Backup Light Strobes, Sail Panel LEDs, 81-LED Lighted Bowtie, Color-changing LED Headlight Accents, Black Flames, 20" Dub X-Wang Wheels, Power Locking Tailgate, Train Horns, Line of Fire, Smoked Taillights.
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« Reply #9 on: 05/14/12 09:20 AM »

Here's a homemade penetrant that works wonders. Go down to the hardware store and buy some acetone, a quart of Dexron Mercon and a refillable spray bottle. In the spray bottle mix the ATF and acetone in a 1:1 mixture.

Spray on the bolts and walah!!!
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« Reply #10 on: 05/14/12 07:44 PM »

I believe this is the better solution:
http://chevyavalanchefanclub.com/cafcna/index.php/topic,103737.0.html
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