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Old 07-09-2023, 01:33 PM
 
14,450 posts, read 20,627,395 times
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Pending a visual inspection the right front wheel is giving metal scraping. The scraping stops when the brake is pressed. First guess, guess only, is a sticking caliper (?) Chevy S-10 pickup.
Thanks.
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Old 07-10-2023, 09:17 AM
 
Location: Newburyport, MA
12,361 posts, read 9,462,379 times
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Quote:
Originally Posted by howard555 View Post
Pending a visual inspection the right front wheel is giving metal scraping. The scraping stops when the brake is pressed. First guess, guess only, is a sticking caliper (?) Chevy S-10 pickup.
Thanks.
When I've heard that noise, there has been a seized caliper on that corner and the brake pads on that wheel have worn through and the resulting metal-on-metal contact makes that noise, which is also the sound of that disk being scored.
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Old 07-10-2023, 09:39 AM
 
15,793 posts, read 20,467,632 times
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Gotta pull it apart and look. Over the years i've pulled so many brakes apart for similar reasons and found many different variables contributing to the noise. The type of sound would also help narrow things down but we can't hear it really.

Just pull the wheel off and break the caliper down and inspect the pads for abnormal wear and check to see the slide pins are not sticking and well lubricated. Make sure the pads can slide freely and do not get hung up at some point in the pad support bracket. At that point, hopefully, you should see the cause.

Often times, i've found a pad to get wedged/seized in the caliper bracket which prevents it from properly engaging with the rotor. When the brake is applied, the force is enough to push the pad into the rotor and stop the noise, but when released, the friction of whatever is locking the pad in doesn't allow for sufficient pad knock-back and you get a scraping noise as the pad (or backing plate if really worn) scraps the rotor. If you catch it in time, you can usually clean up the surfaces, apply new grease and save the brake pad/rotor. But if enough time goes by deep wear grooves and such will form and it needs to be replaced.
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Old 07-29-2023, 12:38 PM
 
14,450 posts, read 20,627,395 times
Reputation: 7995
Quote:
Originally Posted by BostonMike7 View Post
Gotta pull it apart and look. Over the years i've pulled so many brakes apart for similar reasons and found many different variables contributing to the noise. The type of sound would also help narrow things down but we can't hear it really.

Just pull the wheel off and break the caliper down and inspect the pads for abnormal wear and check to see the slide pins are not sticking and well lubricated. Make sure the pads can slide freely and do not get hung up at some point in the pad support bracket. At that point, hopefully, you should see the cause.

Often times, i've found a pad to get wedged/seized in the caliper bracket which prevents it from properly engaging with the rotor. When the brake is applied, the force is enough to push the pad into the rotor and stop the noise, but when released, the friction of whatever is locking the pad in doesn't allow for sufficient pad knock-back and you get a scraping noise as the pad (or backing plate if really worn) scraps the rotor. If you catch it in time, you can usually clean up the surfaces, apply new grease and save the brake pad/rotor. But if enough time goes by deep wear grooves and such will form and it needs to be replaced.

Gruesome war stories for sure. I got the new pads on and the parts house guy gave the clip you see in the photo a name but I was not paying attention. What is it and it's function? Thanks.
Attached Thumbnails
Metal scraping right front wheel-imgp1995.jpg  
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Old 08-16-2023, 05:26 PM
 
Location: Sandy Eggo's North County
10,282 posts, read 6,808,499 times
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"Anti-Vibration" device.

They work best when greased.
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Old 08-16-2023, 09:59 PM
 
Location: Coastal Mid-Atlantic
6,734 posts, read 4,412,768 times
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I've had this happen before. Sometimes it can be the simplest thing you over looked. Mine was the caliper / brake pad retaining spring. Put back on correctly. It fits well. It simply lost its tension. Sometimes you can bend those things, yea it looks ok. Then the heat sets in. New springs, pads stay positioned, and no more scraping noises when brakes applied. I've also fixed this problem from a small rock that got jammed up in there.
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