Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

Sqweaky brakes

Discussion in 'The Garage' started by tch777, Jun 14, 2006.

  1. tch777

    tch777 1/2 ton status

    Joined:
    Jan 15, 2003
    Posts:
    244
    Likes Received:
    0
    Location:
    Colorado Springs, CO
    So I have about 3000 miles on our set of EBC slotted rotors and EBC green stuff pads on the front of the 91 sub.
    For the last 300 miles they have been squealing.
    I cleaned the hubs of all rust and crud prior to having the new rotors and lug bolts pressed in.
    Followed all instructions and installed new pads with the anti squeal goo.
    They worked awesome for 2500 miles but now are very loud.
    They make noise under light brake pressure and with no brake pressure at slow speeds.

    Where do I need to look to find the noise source?

    I also tightened up the rear pads as the new self adjusters are doing nothing. And I when to the car wash and power blased off the rotors and pads.

    Tim
     
  2. southernspeed

    southernspeed 1/2 ton status GMOTM Winner

    Joined:
    Dec 24, 2003
    Posts:
    4,395
    Likes Received:
    50
    Location:
    VA
    You may just need more anti-squeel. Squeel is usually just a resonance from the pad moving slightly. You can try chamfering the leading edge of the pads, this sometimes helps. If you're using the spray on anti-squeel let it go off before fitting the pads, or you can just use copper slip on the back of the pads.
     
  3. tch777

    tch777 1/2 ton status

    Joined:
    Jan 15, 2003
    Posts:
    244
    Likes Received:
    0
    Location:
    Colorado Springs, CO
    The EBC pads already have a champer on them.
    I used the rub it on packet of anti squeel and coated it pretty good.
    Maybe I did not let it set up long enough before re assembly.

    Thanks

    Tim
     
  4. tch777

    tch777 1/2 ton status

    Joined:
    Jan 15, 2003
    Posts:
    244
    Likes Received:
    0
    Location:
    Colorado Springs, CO
    fixed

    Sunday I pulled the pads off.
    The EBC pads had the anti squeal shims on the back of them and they separated from the pads. So that is where the noise was coming from.
    I checked them and they are flat across no taper or anything.
    So I pulled the shims off and chucked them in the trash.
    I coated the pads really good with the CRC anti squeal and let them set up for over 10 minutes and then put it all back together.

    The brakes are actually quieter than when I first installed them.

    Tim
     
  5. southernspeed

    southernspeed 1/2 ton status GMOTM Winner

    Joined:
    Dec 24, 2003
    Posts:
    4,395
    Likes Received:
    50
    Location:
    VA
    Good job! At least you didn't put the anti-squeal stuff on the face of the pads like a mechanic I had working for me once (for a VERY short while!!!!)
     
  6. tch777

    tch777 1/2 ton status

    Joined:
    Jan 15, 2003
    Posts:
    244
    Likes Received:
    0
    Location:
    Colorado Springs, CO
    Noisy again

    Well that did not last long. The brakes are almost as noisy as before.
    And now after taking a right hand turn the driver's side wheel feels like something is sticking and there is a grating or rubbing sound. It goes away after driving straight for awhile. I did go check the lug nuts and a couple were not tight after my drive so I used the torque wrench again and they are now all torqued down at 95 ft lbs. I thought they all were yesterday too but 3 of them took a 1/4 turn or so before the clicker wrench popped.

    Anything else I should look for?

    Thanks
    Tim
     
  7. tch777

    tch777 1/2 ton status

    Joined:
    Jan 15, 2003
    Posts:
    244
    Likes Received:
    0
    Location:
    Colorado Springs, CO
    Well the lug nuts being a little loose was not it. However the squeal did go away some after tightening the nuts. The grating came back but only is there when the brakes are good and heated up. Just like before. What the heck could be going on I know I tighten the caliper bolts down.

    Guess I will tear it all apart tomorrow and see what I can see but it would be good to have an idea of what to look for.

    Thanks

    Tim
     
  8. tch777

    tch777 1/2 ton status

    Joined:
    Jan 15, 2003
    Posts:
    244
    Likes Received:
    0
    Location:
    Colorado Springs, CO
    Well the ball joints are tight and the wheel bearings are tight too.
    Calipers are tight, pads in good shape.
    But the rotor seems to be warped, so I am taking it into a brake shop to get them to inspect and turn rotors.

    Tim
     

Share This Page