New brake grinding
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Joined: Aug 2013
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From: Sicklerville NJ
New brake grinding
I just completed a full brake install on my 07 z51(stoptech rotors, hawk brake pads). The install went smooth except my front left (driver side) brake is grinding. I ripped it apart several times to re check my install and still getting the same issue. It grinds loudly during driving and braking. When I have the tire off and spin the rotor it seems like the pads aren't moving away from the rotor. Is it possible that they are hinged too tightly in the bracket clips? its really the only thing I can think of that I haven't tried yet. I'm open to suggestions.
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St. Jude Donor '15
I just completed a full brake install on my 07 z51(stoptech rotors, hawk brake pads). The install went smooth except my front left (driver side) brake is grinding. I ripped it apart several times to re check my install and still getting the same issue. It grinds loudly during driving and braking. When I have the tire off and spin the rotor it seems like the pads aren't moving away from the rotor. Is it possible that they are hinged too tightly in the bracket clips? its really the only thing I can think of that I haven't tried yet. I'm open to suggestions.
Are there any unusual marks on the rotor or anything like that? How many miles on them?
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From: Sicklerville NJ
No miles at all.. Just installed them.. There are no markings anywhere on the pads or the rotors and its just the one that is grinding. No burrs on the drill holes or anything either. I spun the rotor with just the caliper bracket installed to see if they could possibly be warped and it spun without issues or "wobbles"
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Pro
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From: Sicklerville NJ
Yeah sorry.. the guide pins seem to be just fine.. took them apart. No corrosion, plenty of lube on them and they move freely inside the caliper
Burning Brakes
Joined: Dec 2005
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From: TX Hill Country
Since you state it seems that the pads are contacting the rotor when you manually turn the wheel, remove your wheel and loosen your caliper so that you can use a C clamp to push the pistons back into the caliper. Re-install the caliper and rotate the hub to see if you hear/feel the rubbing of pad to rotor. If everything is OK, press the brake pedal and then try rotating the hub again. If the pads aren't releasing, one or both of your pistons are stuck. You might need to rebuild your caliper.
Just a thought.
Just a thought.
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From: Sicklerville NJ
Since you state it seems that the pads are contacting the rotor when you manually turn the wheel, remove your wheel and loosen your caliper so that you can use a C clamp to push the pistons back into the caliper. Re-install the caliper and rotate the hub to see if you hear/feel the rubbing of pad to rotor. If everything is OK, press the brake pedal and then try rotating the hub again. If the pads aren't releasing, one or both of your pistons are stuck. You might need to rebuild your caliper.
Just a thought.
Just a thought.
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From: Sicklerville NJ
I'll take some pics tonight when I get home.. I'm sure its something obvious that I'm just missing from messing around with it for too long and get all worked up
Burning Brakes
Joined: Dec 2005
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From: TX Hill Country
That ran through my mind as well that the pistons are stuck.. I forgot to mention that with the tire off and the rotor tightened in place with a few lug nuts it seems to be spinning freely just fine. Its when the tire gets installed thats when its making the grinding noise
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St. Jude Donor '15
"In honor of jpee"
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St. Jude Donor '15
I wish it was this, but no. I checked the clearance on everything. So after ripping it down again and starting fresh I'm still at square one. everything spins freely once installed until I apply the brakes and pressure is applied from the pistons.. after that it seems like the pistons aren't releasing enough for the pads to not touch the rotor. i was thinking of removing the backing from the pads to give it a little more clearance. thoughts?
Sounds like the pistons aren't releases easily enough to me. I'd try cleaning them very well if you haven't already and maybe move them back and forth a few times to see if they get any better. i.e. pump pedal a time or two to extend them, then C clamp or whatever to push them back in
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From: Sicklerville NJ
I think the first time you push down the brakes it will take up that slack and you'll likely be in the same boat. I don't think clearance is the problem, the problem is the pistons aren't moving back out when you release the brakes. I can say that mine always touch a little bit.. when I was trying to see if I had a wheel bearing problem I pulled the caliper off so I could get rid of that bit of drag/noise to help narrow down to the wheel bearing. Without hearing it or seeing it I (and I doubt anybody) can really say whether it's normal or not. If you're sure it's not normal then I'd try working the pistons some first
Sounds like the pistons aren't releases easily enough to me. I'd try cleaning them very well if you haven't already and maybe move them back and forth a few times to see if they get any better. i.e. pump pedal a time or two to extend them, then C clamp or whatever to push them back in
Sounds like the pistons aren't releases easily enough to me. I'd try cleaning them very well if you haven't already and maybe move them back and forth a few times to see if they get any better. i.e. pump pedal a time or two to extend them, then C clamp or whatever to push them back in
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This is just one of several out there.
http://www.zoro.com/milwaukee-ir-the...w&gclsrc=aw.ds
