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Old 03-22-2012, 07:02 PM   #1
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Brake Seized, need help!

Was on the Highway, when my YJ jerked to the left and almost drove me into oncoming, I pulled over cause I thought I blew a Tire. I was close enough to home to drive home at a whopping 15 km/h. I took the wheel off and smoke was shooting out of the left front caliper. The nuts burned my fingers that's how hot it got. What in the %#$@ happened and how do I fix it.

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Old 03-22-2012, 07:40 PM   #2
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same happened to me yesterday.....the caliper piston stuck out, pushing the pads against the rotor constantly......to fix, take the caliper off the rotor, remove the pads....then GENTLY push the brake pedal until the piston comes almost all the way out (helps to have someone do that while you watch the piston), then lift the boot back and clean the rust off the outside of the piston and lube with wd-40 or lithium grease....put the boot back in place and use a large C Clamp to push the piston all the way back in the caliper....reassemble and press the pedal to get the piston to normal position and you're good to go....OR you can buy a new caliper and replace the old one, bleed the brakes and you're good to go....

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Old 03-22-2012, 07:42 PM   #3
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change the caliper. I tend to change both. good time to check the bearing and axle u-joints.
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Old 03-22-2012, 07:46 PM   #4
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if you replace it, replace both fronts. they aren't terribly expensive and having one new and one old can cause problems. most commonly, the newer one works better and pulls the wheel when braking.
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Old 03-22-2012, 08:19 PM   #5
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calipers are less than twenty dollars, replace both as well as the brake hoses
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Old 03-22-2012, 08:30 PM   #6
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Quote:
Originally Posted by jfbilbro View Post
same happened to me yesterday.....the caliper piston stuck out, pushing the pads against the rotor constantly......to fix, take the caliper off the rotor, remove the pads....then GENTLY push the brake pedal until the piston comes almost all the way out (helps to have someone do that while you watch the piston), then lift the boot back and clean the rust off the outside of the piston and lube with wd-40 or lithium grease....put the boot back in place and use a large C Clamp to push the piston all the way back in the caliper....reassemble and press the pedal to get the piston to normal position and you're good to go....OR you can buy a new caliper and replace the old one, bleed the brakes and you're good to go....
Did what you suggested first, Seems to have worked, I'm assuming the disk wasn't set in properly when it was replaced. Took the caliper off, and cleaned everything out, The caliper was stuck as well, so i'll be replacing those tonight, thanks for the help!
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Old 03-22-2012, 08:51 PM   #7
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Same thing happened to me 2 days ago,except,mine pulled right but left was smoking hot . Tapped everything with a hammer to knock off any dried mud,cleaned and sprayed WD 40 and no problems...new brakes and calipers next week though
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Old 03-23-2012, 10:02 PM   #8
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My 95 wrangler did this last week (right front). I had the same thing happen a couple years ago on my 02 Grand Cherokee. When it would cool off it would be fine (for a while). Then it would randomly happen again.

When I took the caliper off my GC the piston was cracked and falling apart. On the wrangler the rubber seal was cracked and leaking brake fluid.

Replaced the bad wrangler caliper last weekend. Changing the other one tomorrow. If one went bad the other one's probably not much better off.

$19.95/caliper at Advance Auto. Make sure to return the old one to avoid an additional $25 core charge. It will be rebuilt and sold to someone else.

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