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Old 04-27-2019, 03:57 PM
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Clunk when brakes are applied

anybody ever had a problem with CPP brakes? Sounds to me like the driver side front disc which uses the gm metric calipers. When they brakes are applied lightly everything is fine, if medium pressure is applied a quick bang or clunk happens. Everything is tight. All I can think of is the pads jump ahead a hair and smash into the caliper housing? I have the same kit on another car and it does the exact same
thing except it’s when I back up and apply the brakes.

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Old 04-27-2019, 04:43 PM
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Did you bend the ears over so the pad is tight on the caliper? I usually tap on them with a hammer and test fit on install.
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Old 04-27-2019, 05:07 PM
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No I did not bend the ears, I will check that thanks.
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Old 04-27-2019, 06:36 PM
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Checked everything out. It is the driver side inside pad that moves forward and back against the caliper bolts/pins. I can’t say I have ever had to bend anything on pads all the times I have done brake jobs and never had this problem.. I can’t see exactly where or what to bend to prevent the forward and back rocking though?
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Old 04-27-2019, 07:51 PM
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It's the outside pad that you bend the ears where it wraps around the caliper. That will knock for sure. Usually the inside pad cant move because it has two ears that rest on the pins. The inner pad may also ride on the caliper bracket, I can't remember, it's been a while since I've had one apart.
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Old 04-27-2019, 08:08 PM
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Thank you, I will try that
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Old 04-30-2019, 11:45 AM
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I use a disc brake quiet spray on the backs of the pads. Make sure the inner pad spring clip (goes inside the caliper cup) is not broken. On the outside pad, bend the ears slightly down with pliers and test fit them onto the caliper. It may take a couple of tries to get them tight.


You can also do them after they are on. Drive a wedge between the rotor hat and outside pad, a chisel or big screwdriver is ok. Then whack the ears down with a punch and hammer. Take out the wedge and they should be tight.
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