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need help/suggestions with calp. bracket removal

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Old Aug 28, 2004 | 03:46 PM
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Default need help/suggestions with calp. bracket removal

I am putting on new rotars, or atleast trying to.

I need to remove the brackets that hold the calipers in place. These brackets are bolted on, and good lord.........are they tight. I worked for 10 min, and finaly got on of the fronts done. I worked on a rear on the same side for 15 min, and can't break the bolt loose. Corrosion isn't an issue, the car is almost new.

Suggestions?
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Old Aug 28, 2004 | 03:53 PM
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Those bolts are torqued to 125 ft lbs. You will need to use a breaker bar to get the needed leverage.
Bob
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Old Aug 28, 2004 | 03:56 PM
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thanx........

I have three bars, one of them is so long I can't get it into the wheel well and get any turn on it. I am gonna hit the bolts with some sort of lube .......maybe that will help. I sure hope I can get them back on at 125lbs. I did notice the front that I did get off had red lock tight on the bolt.
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Old Aug 28, 2004 | 04:46 PM
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Old Aug 28, 2004 | 04:54 PM
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[IMG][/IMG] The fronts are easy because you can turn the steering to get access. In the back you need to get the car high enough to swing your longest breaker bar, minimum 24". It's tough, but can be done. Put lock-tite on the bolts when reinstalling them.
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Old Aug 28, 2004 | 04:55 PM
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From: Celina ohio
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with air wrench

I did get the front and rear right hand side done. One busted knuckle, and a bruised elbow and 2 beers latter. There isn't any way in he11, I can get the bolts back in at 125lbs.

Oh well what is the worst that can happen, if my brake calp. brackets fall off?

It never crossed my mind to jack the car higher to help in the back.............DUH. :o

Thanx I'll give that a try.........I hope it works, I only have 3 more beers left.

Last edited by boatboatboat; Aug 28, 2004 at 04:59 PM.
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Old Aug 28, 2004 | 07:27 PM
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It can be done with only normal height jack stands.
On the rear, I get my torque wrench on the bolts with the shaft of the torque wrench going forward and under the frame of the car. There is about 4-5 inches of travel available which is enough for me to get 125 ft-lbs of torque on them.

When torquing the rear, I normally sit with my legs stretched to the rear and one arm reaching under the frame to the torque wrench. The side which you pull up, I find easy as I am pulling up against the ground. I have a real hard time with the side you must push down on and have to get a significant portion of my weight on the torque wrench to get to 125 ft-lbs, which is tough with one arm at a weird angle. Kind of like doing a one arm bar dip.
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Old Aug 28, 2004 | 09:05 PM
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The problem isn't the torque, 125 pound is not that difficult to achieve.. the problem is the red loctite. many people have set a breaker bar on the bolt then with the aid of a jack, used hydrolics to jack the breaker bar using the cars weight to break the bolt.. shocking the loctite will also work.. wd-40 or any penitrant wont work..When I reinstalled mine I used Blue loctite.
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Old Aug 28, 2004 | 09:40 PM
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I used a breaker bar and a few taps with "Betsy", my 5-lb. sledge.
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Old Aug 29, 2004 | 12:26 AM
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Originally Posted by Evil-Twin
The problem isn't the torque, 125 pound is not that difficult to achieve.. the problem is the red loctite. many people have set a breaker bar on the bolt then with the aid of a jack, used hydrolics to jack the breaker bar using the cars weight to break the bolt.. shocking the loctite will also work.. wd-40 or any penitrant wont work..When I reinstalled mine I used Blue loctite.

To further confuse things the red stuff on the original bolts is not loctite. The red stuff, like blue loctite, is a medium strength thread lock that does not require heat to remove. Red loctite requires heat.
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Old Aug 29, 2004 | 09:07 AM
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breaker bar and hammer-works for me
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Old Aug 29, 2004 | 09:35 AM
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Originally Posted by Ls1Rat
What's the smallest air tank that an impact wrench can use effectively?
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Old Aug 29, 2004 | 10:08 AM
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http://forums.corvetteforum.com/showthread.php?t=893975

an update on how my "fun" Mod went.......
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Old Aug 31, 2004 | 02:42 AM
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Originally Posted by lemansbleu2004
What's the smallest air tank that an impact wrench can use effectively?
Defends on the bolts to be removed or installed. I'd say for the caliper bolts I'd set my tank at 150 psi. It takes a lot of torque to remove bolts that are set at 126 ft. lbs.
Also the impact guns are designed to work one handed so you can hold a beer with the other one hand.
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