Rubbing noise after front brakes job
Hey guys,
I'm sorry I've been posting a lot lately. I'm trying to learn more about mechanic and my car being now out of warranty, I figure it would be the best way to learn. Our car is also quite simple to do maintenance on it. So I did my first brake job yesterday on my 2009 Fit and took it for a very small drive (less than 10 kms) this morning and notice some kind of rubbing noise. It does not seem to be when I brake, but when I'm coasting. I jacked the front wheels after my drive and noticed that when spinning the wheels (either forward or reverse), there's some kind of rubbing noise. Just as if the pads were rubbing. But this happens on BOTH sides. Braking performances seems good however. I did the same procedure on both sides. The procedure that I did is below. I changed both front rotors and pads. I used the Centric rotors as well as the Akebono pads. I also used Permatex copper anti-seize, medium blue threadlocker, Permatex Silicon Ceramic lub and of course brake cleaner. I bought brand new brake hardware (caliper clips and pads springs). Because this was my first brake job, I followed
I think this pretty much sums up what I did. I did the exact same thing on both side. Do you know why I would get a rubbing noise ? Did I miss something or did something wrong ? Or is it just a Break-In thing ? I read on the Akebono Pro-Act flyer that they do not have Break-In. Thanks, Neo. |
If it's not the rotor dust shield rubbing a rotor.....and you KNOW you did the brake job correctly, just drive it normally. It's pretty typical for a fresh brake job to make light scrub noises until they "bed in". I'd expect 10-30 normal routine stops in traffic should be sufficient (a typical daily commute for some people).
When I do a brake job with Hondas pads, they are usually pretty quiet by the time a 5 mile test drive with about 10 stops is done. Aftermarket parts may be different. |
Originally Posted by ezone
(Post 1404936)
If it's not the rotor dust shield rubbing a rotor.....and you KNOW you did the brake job correctly, just drive it normally. It's pretty typical for a fresh brake job to make light scrub noises until they "bed in". I'd expect 10-30 normal routine stops in traffic should be sufficient (a typical daily commute for some people).
When I do a brake job with Hondas pads, they are usually pretty quiet by the time a 5 mile test drive with about 10 stops is done. Aftermarket parts may be different. Thanks ! |
A small follow-up; feedback is welcome.
I had a 150 kms (~90 miles) drive today. Mostly highway but some back country roads. The rubbing is still there but at low speed I can hear a high pitch sound. On the highway I can't hear due to engine and road noise. Pedal sensation is very good and braking is excellent. No vibrations on the pedal or steering wheel when braking. So as for performances, they are very good. Before dark tonight, I had time to check the front passenger side. From what I can tell, it seems as if the outside pad is rubbing on the rotor. If I remove the caliper and the pads (only the caliper bracket left on the rotor) and I turn the rotor manually, all the rubbing noise is gone. Installing the pads and the caliper introduces the rubbing. Looking at the pads when they are inside the caliper, it looks like the outside pad is the problem. The wife was in the car pumping the brakes while I was looking at the caliper moving. It's not moving by much. I know it doesn't need to move by much, but still. If I turn the rotor and the wife pumps the brakes, then the rotor stops right away. Releasing the brakes pedal release the rotor but there's rubbing involved. It seems that the caliper is like a hair (or 2) too tight for the outside pad. The pads springs are doing their job perfectly; I can't put the springs on the pads without holding the pads otherwise one pad will move and I can't fit them in the caliper ! So the springs do not seem to be the issue. Guide pins move freely from what I can feel. Any idea ? Thanks ! |
Check if one of the stainless clips in the caliper bracket ends got bent or shifted sideways and rubs the rotor?
Pads will almost always drag lightly against the rotor when the caliper is relaxed, no matter what. The little wire spreaders just help push the pads away but they aren't supposed to have all that much strength. If they actually pushed the pads far apart then you'd have excessive pedal travel to make up for it. |
did u apply grease where metal contacts the brake pad? of course not the side that touches the rotor.
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Originally Posted by ezone
(Post 1405281)
Check if one of the stainless clips in the caliper bracket ends got bent or shifted sideways and rubs the rotor?
Pads will almost always drag lightly against the rotor when the caliper is relaxed, no matter what. The little wire spreaders just help push the pads away but they aren't supposed to have all that much strength. If they actually pushed the pads far apart then you'd have excessive pedal travel to make up for it. It has to be something with the caliper, caliper hardware or pads. Caliper hardware and pads are new. Could I be pretty unlucky and got a stuck piston on both side ? A piston that is not returning fully to his starting position in the caliper ? I can push fully the piston using a tool, but I don't know if it returns properly to his position in the caliper when released. That high pitch noise, could it be actually something else related to a wheel bearing or something ? I don't know much about these.
Originally Posted by xxryu139xx
(Post 1405282)
did u apply grease where metal contacts the brake pad? of course not the side that touches the rotor.
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I can push fully the piston using a tool, but I don't know if it returns properly to his position in the caliper when released. Actual piston retraction is only a few thousandths of an inch when you take your foot off of the brake pedal. |
Originally Posted by ezone
(Post 1405298)
It is never supposed to fully retract in use, it only relaxes.
Actual piston retraction is only a few thousandths of an inch when you take your foot off of the brake pedal. One thing I am going to check as well are the guide pins once again. I'll remove the pads and test how the caliper is moving moving without the pads. I want to see if it moves freely and if it returns to his original position when releasing as I saw in many videos. I applied a good amount of silicon on the guide pins, but I did not clean inside the guide pins holes. There might be dust inside preventing the guide pins to fully go to the bottom of the hole and shifting the caliper slightly inside (which would make the outer pad touches the rotor). I'll also replace the boots of the pins as the old ones might be worn out. I'll keep you posted. Any other feedback/reply is of course welcome :) Thanks again guys ! |
The stainless clips that come with some aftermarket caliper (brackets) are crap, fit poorly and can make contact with the rotors (very metallic scrape/screech noises, sometimes not consistent). I tend to reuse originals just because they fit better.
In the last 2 days I've seen this with 4 NEW aftermarket calipers LOL |
Originally Posted by ezone
(Post 1405357)
The stainless clips that come with some aftermarket caliper (brackets) are crap, fit poorly and can make contact with the rotors (very metallic scrape/screech noises, sometimes not consistent). I tend to reuse originals just because they fit better.
In the last 2 days I've seen this with 4 NEW aftermarket calipers LOL |
From everything you describe, I don't think you have a problem. If it was my car, given it brakes properly, I'd drive it for a few hundred miles and see if complete bedding in of the pads to rotors solves the noise issue. If the noise persists, you should carefully examine the rotor on the side you hear the rubbing noise. Is there any pulsation in the pedal which indicates runout of the rotor? That could be enough to cause rubbing once per wheel revolution at the high point. The factory runout spec is pretty tight at 0.1 mm or .004". This can be easily checked with a magnetic base dial indicator gauge (if you have one). Some stores will loan them out or maybe you have a friend. If you get runout, don't automatically assume the rotor is bad. There could be a bit of debris or rust under the rotor mounting surface on the face of the hub. Clean it up and remount the rotor and retest runout. Your concern that the noise could be from a metal retainer clip rubbing on the rotor would normally cause a metallic screeching sound rather than the "rubbing" sound you describe. Your rubbing is more likely from pads against the rotor.Those clips would have to be quite a ways out of place to rub on the rotor and you should be able to spot them with a bright flashlight on tight focus. Your step by step procedure looks good, very meticulous and methodical which is good when doing something as critical as brakes. Keep a careful eye on your brake pad wear to be sure inner and outer pads are wearing at about the same rate. Inner pads on Fit's typically wear faster but if the friction points on the pad ears are lubed with silicone brake grease properly, this should ensure proper even wear. It is easy enough to swing the caliper up out of the way to clean and lube the retainer clips in 10K (or so) miles. Few owners or shops bother with this but it can help. In areas where roads are heavily treated with salt in the winter rotors suffer badly. Salt water on hot steel is never a good thing. As a previous poster said, different pad types wear in at different rates. Aftermarket ceramic pads take longer than softer factory pads.
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Originally Posted by spookyneo
(Post 1405358)
Thanks. I bought clips from the Honda dealership at 8$CAD each so they are OEM. Maybe I just incorrectly clip them. I'll keep you posted once I look at this. It might be only this week-end as I'm pretty busy this week, but I'll follow-up for sure :)
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