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Brakes making a scraping noise


Rangerlifefx4

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So i have replaced the calibers, pads and rotors, but for some reason it still sounds like my brakes are scraping. Its all the time, while I’m driving and braking, it doesn’t go away. I drive an 05 fx4 ranger


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Spott

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Let me ask you a few questions for clarification:

1. Why did you post this in the 4.0l engine forum?

2. If you went to the Steering/Brakes forum, and searched there, would you find some existing useful information?

3. Have you looked in the Brakes section of the Tech Library for information?

4. Have you inspected the hub assemblies for something rubbing that's not a brake part?
 

Rangerlifefx4

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Spott said:
Let me ask you a few questions for clarification:

1. Why did you post this in the 4.0l engine forum?

2. If you went to the Steering/Brakes forum, and searched there, would you find some existing useful information?

3. Have you looked in the Brakes section of the Tech Library for information?

4. Have you inspected the hub assemblies for something rubbing that's not a brake part?
Click to expand...


This was my first time posting here so i was unaware of different sections until a minute ago, i searched there (thats how i found out about it) and I didn’t find anything, I haven’t looked at the hub assembly because to be completely honest with you I didn’t even think about it. Thats what i will do. Thank you for your help!


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adsm08

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Also check the dust shields and look to see if they are rubbing the rotors. They are just stamped steel, it doesn't take much to bend one. If you find one touching just bend it back away from the rotor.
 
ericbphoto

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+1 on the dust shields. When I bought my truck, I found that the previous owner, while doing a brake job, had put jacket and under the frame of the truck and then took his jack out from under the axle beams, with no wheels installed. Result was 2 bent dust shields rubbing the rotors.

It's easy to jack up a wheel and rotate it by hand while you try to pinpoint the source of the noise.

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Rangerlifefx4

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adsm08 said:
Also check the dust shields and look to see if they are rubbing the rotors. They are just stamped steel, it doesn't take much to bend one. If you find one touching just bend it back away from the rotor.
Click to expand...


I haven’t looked at them yet but I definitely will! Thank you for the helpful advice


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Rangerlifefx4

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ericbphoto said:
+1 on the dust shields. When I bought my truck, I found that the previous owner, while doing a brake job, had put jacket and under the frame of the truck and then took his jack out from under the axle beams, with no wheels installed. Result was 2 bent dust shields rubbing the rotors.

It's easy to jack up a wheel and rotate it by hand while you try to pinpoint the source of the noise.

Sent from my SM-G920V using Tapatalk
Click to expand...


Thank you for your help!


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adsm08

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Eric had some good points. One of the easiest flows for finding a rotational noise of any sort is to first figure out where it is, so in your case figure out which wheel(s) is responsible for making the noise. This is easily done by jacking them up and spinning them one at a time.

Then you figure out which part is responsible for the noise by removing them one at a time and spinning the wheel to see if the noise is still there. So first take off the wheel, spin the hub. Take off the caliper spin the hub, then the brake pads, then the bracket, and last the rotor. When you spin the wheel and the noise isn't there you know what was making it, then you just have to figure out why.

It helps to put a lug nut or two back on after the wheel is off to help hold the rotor in it's normal place.
 
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