Strange Brake noise

[hywy61]

Strange Brake noise - Brake pad picture with odd wear

Strange sound occasionally. Only happens at low speeds when stopping. Sounds like a low grinding noise coming from passenger front tire. The odd thing is that its not consistent. Maybe once every 15-20 stops then goes away.

Brake pads have around 24k on them so i guess that's possible. Rotors only have around 35K. I have had the three amigos going on and off for the last 10K but have ignored it. Not sure if its related. I guess I could start with replacing the pads but figure i would ask first.

thanks in advance

 

[Jlipton72]

Re: Strange Break noise

Jack up your front corner and check the wheel bearing, pads and rotor, guarantee youll find something.

 

[helievacpilot]

Re: Strange Break noise

Your waaaaaaaaaay past due on pads. Rotors too. Your stopping a 2 1/2 ton truck. That shit wears out fast.

Oh yea - "Brake"

 

[hywy61]

Re: Strange Break noise

So i am thinking this might be a sticking caliper issue maybe? If it were the pads I should hear the rubbing all the time I imagine. I only have about 22K on the pads. In the past I change them at around 30K and they usually have plenty of meat left on them.

So if its the bearings how hard a job is that?
How hard is it to replace the calipers? Can i just to the front only or do i need to replace all 4?

thanks

 

[hywy61]

Re: Strange Break noise

I attached a pic here. Pulled off the tire and had a look. Didn't see anything obvious.

 

[Tugela]

Re: Strange Break noise

Before you start replacing parts you should figure out what exactly the problem is, otherwise you could end up spending a bunch of money on stuff that isn't broken. If the calipers are the issue, new ones are not expensive (just make sure you buy them from a vendor on D-Web, like Will Tillery, Paul Grant, PT Schram, or any of the other reputable guys). It's fine to just replace the front pair, but again - make sure you have accurately diagnosed the problem. No point in spending $250 on calipers to find out you really need new hubs.

 

[hywy61]

Re: Strange Break noise

thanks. that makes sense. I just don't know how to diagnose the problem. Visually everything appears fine.

If it were the hub i imagine it would be a constant noise and not just when the brakes are applied.

 

[Tugela]

Re: Strange Break noise

If it were the hub i imagine it would be a constant noise and not just when the brakes are applied.

Not necessarily. A while back my front hub bearings were loose and they only made noise under braking. Tightening the hub nut solved the issue. I believe hub assemblies are different between D1 and D2 so I don't know if your solution will be as simple as that. If you have an indie Rover specialist shop nearby you might consider an hour of shop time to get a correct diagnosis. Spending $100 to find out exactly what the problem is might be worth the time savings and head scratching and trial-and-error. Brakes are an important enough system on the vehicle that if I'm stumped I defer to the professionals.

 

[ezzzzzzz]

Re: Strange Break noise

Jack the front up and check for hub movement. Grab the tires top/bottom and try to rock. There should be no discernible play. If there is you probably just need to tighten up the spindle nuts. Afterwards, rotate the hub and listen for noise. Some noise is present but a growling sound and gritty feel usually means a bearing is shot. If you're not up for this work take your truck to 'The Shop' in Norcross. Luke and his crew will take good care of you.

 

[hywy61]

Re: Strange Break noise

ok. So there is no play when i pull the tire back and forth while holding the top and bottom of the tire. So I am thinking it is not the hub assembly. Plus I heard that when you turn corners it is obvious. I don't have that issue.
Mine only happens occasionally when lightly applying the brakes.


For those of you with this problem there are some great videos on you tube on how to replace them.

While watching one of those videos someone mentioned using anti-seize on the caliper guide pins.
Another video mentioned greasing them? If so can i use axle grease?

Good idea ?

 

[Butch]

Re: Strange Break noise

Get some anti-seize from a local auto parts store. Its real cheap. Also, visually inspect the part of your pads that make contact with the rotor. I had a similar situation on a suburban that I had years ago...turned out to be a rock caught between the pad and rotor.

 

[discostew]

Re: Strange Break noise

Don't use anti seize in the caliper slides. Maybe the copper colored anti seize but the silver stuff will be a problem. When it gets hot its going to get burned off and all that will remain is crusty shit that wont help anything slide.

I use high temp grease in the slides.Like bearing grease.

 

[hywy61]

So this wear certainly doesn't look normal but I can't figure why it would wear like this? I didn't see anything obvious. This pistons seemed to retract smoothly but there was a slight tear in the rubber surrounding them.

this was the outside pad. Passenger front.

Any ideas?

Definitely going to go ahead and to the rotors and pads soon. Just trying to figure if its caliper related.

 

[hywy61]

Here's the inside pad without the same wear spot.