2010 Grand Cherokee brake issue - JeepForum.com

 
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post #1 of 6 Old 06-27-2013, 11:02 AM Thread Starter
edobrowansky
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2010 Grand Cherokee brake issue

Good Morning.



Yesterday I installed new brakes on my '10 Grand Cherokee. I purchased the full rotors/pads front and rear Mopar kits from a local dealer. Other than dealing with the springs for the rear emergency brake shoes, things went fairly smoothly. However, I now have a major issue.



When braking while moving at highway speeds, the brakes feel nice and smooth, no pulling, etc.... However, when I come to a complete stop, or a rolling stop at around 5-10mph, I hear a clunking sound, like a "thump thump thump" . It seems to get louder the slower I go. And the harder I press the brake pedal. However, I can drive in reverse and never hear the sound. Only in a forward direction. So I pulled the wheels, looked over the brakes once again, and do not see anything that looks out of the ordinary.



Warped rotor? Or a bad pad? Otherwise, the breaking seems too smooth to be a bad rotor. I've experienced bad rotors in the past, and this does not feel anything like it. Maybe a pad is not sitting right in the caliper on the inner side of the rotor?



Is there a remote possibility it could be the rear brakes? Maybe something with the parking/emergency brake is not quite right? I did have one minor issue with the rear driver side parking brake engaging lever where the cable attaches from the rear. The lever assembly that sits between the upper and lower shoes and on the opposite side of the adjuster, where the cable hooks onto, popped off during the disassembly process. I think I put it back in correctly, but it was a pita. Is there some sort of diagram on the web that shows the rear brake assembly and the correct installation of the parking brake hardware?





Thanks

Eric

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post #2 of 6 Old 06-27-2013, 06:00 PM
tom19511
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did you check and adjust the parking/emergency brake? They adjust like drum brakes..

Tom

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post #3 of 6 Old 06-27-2013, 08:20 PM
WieSeL
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Check to see if the pad is a tight fit inside the caliper bracket. If the pad moves around it can make a weird noise
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post #4 of 6 Old 06-28-2013, 05:33 AM
Budasac
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Also, double check that the Caliper mounting bolts are tight. I had a clunking noise when braking once from a loose caliper. The bolt felt tight, but another 1/2 turn with the wrench cleared everything up.
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post #5 of 6 Old 06-29-2013, 10:36 AM Thread Starter
edobrowansky
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Yesterday I pulled all four wheels, inspected the pads, rotors, and calipers. About the only thing I can see is that the one rear passenger side inner pad - the outside end "ears" that sit on the chrome snap-on clips of the caliper assembly - it looks like there is about a 1/16-1/8" gap where the pad could move up or down, whereas all the other pads look to be quite snug. Could that little amount of play be allowing the pad to move? If so, I would think the click would only be heard once in either forward or reverse from inertia pushing it one way or another. I am getting a clicking sound for what appears to be every full wheel revolution. And only in the forward direction; reverse is quiet as can be.

The only thing I can think of at this point is that maybe I have a rotor that is not right, and there is a high spot that is causing the caliper or pads to move every rotation.

Now, do I pull the rotors and pads, and bring them back to the dealer parts counter, and expect them to do an exchange?

Eric
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post #6 of 6 Old 06-29-2013, 12:29 PM
WieSeL
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That's the problem. The pad isn't tight in that caliper bracket. I would exchange them and pick up some new rear brake shim hardware to make sure everything is snug out back.

I high spot in the rotor would cause more of a pulsation than anything
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