How To Adjust Brake Caliper Adapter Closer to Caliper? - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 14 Old 08-25-2012, 05:11 PM Thread Starter
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How To Adjust Brake Caliper Adapter Closer to Caliper?

I'm putting my rear axle back together after a regear and I'm having problems getting the driver rear brake caliper in a condition that allows it to fit over the rotor. The problem is that the caliper adapter (bracket) that hold the outside pad is fully extended from the main caliper assembly. The pins with the rubbers on them are fully extended. The other wheel's caliper is extended about half the length of this one.

How do I get the adapter to collapse closer to the caliper? It's driving me crazy. For what it's worth, I have a c-clamp and was able push the piston in about as far as it'll go.

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post #2 of 14 Old 08-25-2012, 05:15 PM
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Need a pic, something is installed backwards, upside-down or just wrong IMO.

There is no "adjusting" of the caliper. Once the piston is back in, there should be no problems reinstalling the caliper with pads. Unless the axle shaft four bolts are not fully seated, something isn't right.

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post #3 of 14 Old 08-25-2012, 05:24 PM Thread Starter
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Quote:
Originally Posted by Goodysgotacuda View Post
Need a pic, something is installed backwards, upside-down or just wrong IMO.

There is no "adjusting" of the caliper. Once the piston is back in, there should be no problems reinstalling the caliper with pads. Unless the axle shaft four bolts are not fully seated, something isn't right.
No pics for now. I'm sure nothing's backwards. It was never taken apart.

You know the rods with the rubber boots on them on the caliper assembly? They are FULLY extended. I need them to close. Any ideas?

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post #4 of 14 Old 08-25-2012, 05:29 PM
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No pics for now. I'm sure nothing's backwards. It was never taken apart.

You know the rods with the rubber boots on them on the caliper assembly? They are FULLY extended. I need them to close. Any ideas?

They just push back in. Unless they got bent somehow.




That's all it is, with a boot.

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post #5 of 14 Old 08-25-2012, 05:35 PM Thread Starter
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Quote:
Originally Posted by Goodysgotacuda View Post
They just push back in. Unless they got bent somehow.




That's all it is, with a boot.
That's them. I can push them in, but they keep extending back out. They won't stay in.

I can get pictures late tonight. I had to do something for my wife's job. I'm on my phone now.

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post #6 of 14 Old 08-25-2012, 05:36 PM
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Originally Posted by allibaster View Post
That's them. I can push them in, but they keep extending back out. They won't stay in.

I can get pictures late tonight. I had to do something for my wife's job. I'm on my phone now.
You just push them in and install the caliper one bolt at a time, there isn't a spring. It's just the little boot and is causing it to spring out.

Push it in with your fingers and slide the caliper tab over it while removing your fingers.

Once it's installed and you hit the brake pedal a couple of times, the piston will take up the slack in the caliper.

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post #7 of 14 Old 08-26-2012, 06:47 AM
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I might have extra grease/air behind the pin.

Just push it in and grab the boot and pull out a little to burp it. Then it will stay in.
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post #8 of 14 Old 08-26-2012, 08:44 AM Thread Starter
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Every time I used a c-clamp to close the adapter to the caliper, it sprung back out immediately to about 80-90% of its original length. I went back and forth on each side, because I have only a single clamp, with no success.

This morning, I tried doing each side and leaving the clamp on for about 10 minutes. It appears to have worked. I was able to get the caliper on with no issues.

Thanks for your help.

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post #9 of 14 Old 08-26-2012, 08:48 AM
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Every time you use a c-clamp? What exactly are you c-clamping? You just need to push the piston back with a clamp, it doesn't come back out.


Please let someone check your brakes before driving it too much. This is a very simple task that doesn't require clamping anything down for 10 minutes. I've removed and replaced dozens of JK calipers and have never used a c-clamp actually.

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post #10 of 14 Old 08-26-2012, 08:49 AM
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are you taking the cap off of the master cylinder before retracting the piston with the c-clamp?


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post #11 of 14 Old 08-26-2012, 08:52 AM Thread Starter
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Originally Posted by jeeperjkjeeper View Post
are you taking the cap off of the master cylinder before retracting the piston with the c-clamp?
No, but that probably would've helped.

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post #12 of 14 Old 08-26-2012, 11:01 AM Thread Starter
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Another question.

I got everything back on. When I initially put the calipers on, there was about an 1/8" gap between each pad and the rotor. After putting the Jeep in drive and pressing on the brakes a bit, the rotors visually appear to be touching the rotor. The wheels spin freely and stop with the brakes applied.

Is it correct to have the pads to close to the rotor under normal conditions?

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post #13 of 14 Old 08-26-2012, 11:09 AM
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Quote:
Originally Posted by allibaster View Post
Another question.

I got everything back on. When I initially put the calipers on, there was about an 1/8" gap between each pad and the rotor. After putting the Jeep in drive and pressing on the brakes a bit, the rotors visually appear to be touching the rotor. The wheels spin freely and stop with the brakes applied.

Is it correct to have the pads to close to the rotor under normal conditions?
Yes.

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post #14 of 14 Old 08-28-2012, 02:44 AM
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I agree with Goody. While you have the brakes back together, the rudimentary questions you are asking warrant the advice given to have a professional at least look them over.

It's good you are asking these questions to learn, but sometimes having a *helping hand* doing something for the first time is almost necessary, and your brakes are way to important to leave to chance.
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