Brakes or Bearing...or something else

[jbmetal]

last week, when I installed my "new" rear end, also I changed front pads and resurfaced the rotors, but were so bad, that it had to be done like ten times. before that, i had the typical noise that tells you "well, I got to change those pads".

then, after doing that, I noticed an awful squeeking noise on the right disc brake, at the moment of braking, which I thought was caused by the rotor, because of the bad shape those are. but today, I noticed that the noise can be heard at some points when cornering, without any braking, which makes me think it's something on the bearing but before doing the front brake work, that noise wasn't present.

Can anyone tell me what the hell is going on? I don't think the problem is the bearing, because the noise started after resurfacing rotors and replacing pads, before that, there wasn't any noise, just the one made by old pads.

[jbmetal]

Re: Brakes or Bearing...or something else

just thinking that the problem was caused by the rotors, today I changed those rotors. apparently...those we're part of the problem. the freaking squeeking noise can be heard now only when cornering...and under light braking.

Please can anyone help me...figuring out what the problem is, is driving me nuts!!

[Barbadian Camaro]

Re: Brakes or Bearing...or something else

Are you using new pads too? If not check the wear Indicator on the pads,also make sure your caliper bolts are tight.Is the condition of the caliper bushings that the caliper bolts go through are okay?

[hockeyman]

Re: Brakes or Bearing...or something else

What year was the rearend from, and how many miles were on it?

I replaced my V6 drum with a V8 disk setup, and the replacement rear had a slightly bent axle on the driver's side. The squeaking drove me nuts for a few days! I replaced the pads and rotors, but it was still "chirping" on every tire rotation. I finally narrowed it down and replaced both axles, and the noise was a thing of the past.

[jbmetal]

Re: Brakes or Bearing...or something else

practically the same problem I'm having...chirping noise on every tire rotation, but mostly under light braking or sometimes when cornering. about the brakes, I used new pads on the front and rear. The rear end had 55k miles before it was sold to me...also it has a little whine noise, a friend told me that maybe the whine noise is caused my the axle bearing. my mechanic checked the differential and gears, as well as the axle and brakes, and told those parts were practically flawless.

You said you changed axles, but you had to change bearings and seals, right?

Could it be all caused by the bearing?

[hockeyman]

Re: Brakes or Bearing...or something else

You said you changed axles, but you had to change bearings and seals, right?

Could it be all caused by the bearing?

I only changed the axles. I guess I got lucky that the bearings/seals were still in good shape.

The bearings could cause similar problems, but I think that you'd have some sort of axle fluid leak on the ground next to one or both rear tires. It wouldn't hurt to replace them though...especially if you don't know how many miles are on the replacement. They may be on the brink of destruction.

***Just make absolutely sure that the axle fluid level is up to the fill line after you're done replacing the bearings!

If I would have thought about it when I owned my Camaro, I would have changed both bearings and seals just as a precaution because I really didn't know what kind of shape they were really in. I have an independent rear suspension now on my goat, so my worries regarding that are over with. :)

[Meatyshells]

Re: Brakes or Bearing...or something else

how were the slide pins on the caliper mount?

[hockeyman]

Re: Brakes or Bearing...or something else

how were the slide pins on the caliper mount?

Dude...I cannot got my eyes off of your avy! She's H-O-T!:omg:

[jbmetal]

Re: Brakes or Bearing...or something else

how were the slide pins on the caliper mount?

to tell you the truth, I don't know...my mechanic did that job, I've only worked with the front brakes. and apparently the problem is on the rear end. the only thing I can tell you for sure is that the rear end came from a 2002 T/A WS6 with M6.

the dude that sold me that rear end posted this message when he offered it to me, and I forgot about this:

--I've got one also. Out of a 2002 ws6 with 55k on it. car was parted out. rear worked great. Brake on the drivers side squeeked sometimes so im not sure if the pads need replaced or something. I can ship freight. pm me if your interested--

but it wasn't the pads, because I had them changed. I drained the differential and used 75W90 Mobil 1 Synthetic Gear Oil and the LSD additive, but I used the one that Pep Boys sells, that is supposed to be for GM differentials, and not the GM one.

[Barbadian Camaro]

Re: Brakes or Bearing...or something else

I now realise it is the rear brakes that is causing the problem :( first off it seems as though you did a better job than your mechanic :)well I think you may have to get your axles check in a lathe the flange where the wheel studs goes through may have too much run out and causing the discs to appear as though they are warped and making your calipers follow that motion.
What you can do is have the vehicle in the air on stands or a lift and put it in gear and watch the action on the rear brakes.

[hockeyman]

Re: Brakes or Bearing...or something else

There IS an additive the GM dealerships sell for about $15. It's specifically made for the Posi rears, and you add it to the axle fluid. But, I don't think that's going to make a difference right now.

Do you still have the original rear from your car? If so, inter-change the axles, then buy and replace the bearings & seals...then go from there.

www.Partsamerica.com (advanced auto) has rear wheel bearings for $20.00 per pair, and the seals are $5.00 each. I looked it up for a 2000 Camaro 5.7l, which should be the same.

[jbmetal]

Re: Brakes or Bearing...or something else

I now realise it is the rear brakes that is causing the problem :( first off it seems as though you did a better job than your mechanic :)well I think you may have to get your axles check in a lathe the flange where the wheel studs goes through may have too much run out and causing the discs to appear as though they are warped and making your calipers follow that motion.
What you can do is have the vehicle in the air on stands or a lift and put it in gear and watch the action on the rear brakes.

well that's what I think the problem is...on the brakes, but sometimes that noise can be heard without braking. Also...the whining on the rear, can be caused by the same problem?, as well as these problems, sometimes can be heard a rattle noise on the rear driver side. i think it can be because of the same thing.

and where i live, it's difficult for me to do these kind of works by myself. I live at a condominium, so...I depend on a friend or my mechanic.

[jbmetal]

Re: Brakes or Bearing...or something else

look what the seller told me:

the squeeking noise that came from the rear was from the rotor and pads. the bearings are fine as the whole rear was looked over before we ever sold it. if you looked how the pads were wearing, that is the dead give away that something is wrong with either the mounting flange or the backing plate as the pads/caliper were not sitting square with the rotor. being at a odd angle, the caliper slides will not function properly.

[Barbadian Camaro]

Re: Brakes or Bearing...or something else

I have me thinking that maybe why the person sold itso it seem as though you have to get a complete rear end or have yours sorted out the flange the holds the rear caliper have the rotors checked and also the axles,the whinning can be coming from in the differential maybe a pinion bearing it all depends on when are you hearing the noise,if on accelerating or decelerating?but deal with one problem at a time if you can.

[jbmetal]

Re: Brakes or Bearing...or something else

I have me thinking that maybe why the person sold itso it seem as though you have to get a complete rear end or have yours sorted out the flange the holds the rear caliper have the rotors checked and also the axles,the whinning can be coming from in the differential maybe a pinion bearing it all depends on when are you hearing the noise,if on accelerating or decelerating?but deal with one problem at a time if you can.

look what he told me:

Yeah, remembering is the hard part. its been quite awhile since i last touched this part. I remember checking the wheel bearings and everything else over on the rear and all was well. the rear never howl'd or whined when in the car. as for the gear oil. 75w90 should work find. you dont have to use the LSD with the torsen locker becuase its all gear driven. LSD additive is for clutch type diffs, it shouldnt affect anything being in there though. Only thing i remember being a problem was the brake pads/rotor contact angle. the pads wore extreemly odd which posed that something was not right with either the caliper mount, or the backing plate mounting surface to the rear was slightly off.