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So about the rear brakes

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Old Sep 9, 2008 | 11:32 PM
  #1  
shady927's Avatar
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Default So about the rear brakes

I guess there is a wheel speed sensor disc on the drivers rear rotor. I didn't know about this so I took apart my rear brakes so I could replace the rotors and get new pads. But uh yeah 3hours and some odd minutes later I accomplished nothing and still have the original pads and rotors on. WTF I am so pissed. Anyways that caliper tool was ******* sweet even though I borrowed it from autozone for 40 dollars. I take it the sensor disc needs to be pressed on? How would I do that when I get it and do u recommend new wheel bearing mine looked surprisingly brand new though I know they are original.

SOrry for venting it was a long day in which I accomplished nothing
 
Old Sep 9, 2008 | 11:37 PM
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you don't need to touch the abs at all for brake changes. can you show me what the sensor disc you are talking about? i've done brake changes several times on the rear and never had to touch the abs at all. here's the diy, you don't need to bleed your brakes.
http://www.audiworld.com/tech/wheel.html
 
Old Sep 9, 2008 | 11:37 PM
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After the caliper and carrier are off the rotor should come off the hub without much trouble. The ABS ring isn't in play.
 
Old Sep 9, 2008 | 11:45 PM
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I will try to get a pic tomorrow but for now I will describe it. first off in the middle of the disc shield is the wheel speed sensor. Anyways, I took off the rotor and on the back of the stock rotor is another disc with cuts in it, leading me to believe that is how the wheel speed sensor picks up a signal. This disc was pressed onto the original
 
Old Sep 10, 2008 | 12:24 AM
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yea i can't get a pic I just tried. But do U guys understand what I am talking about or no?
 
Old Sep 10, 2008 | 12:52 AM
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The wheelspeed sensor is plug-shaped and presses into the hub on the forward-facing side of the wheel bearing housing. Look on the leading part of the lower A-arm and you'll see a wire that comes out of the body, runs under a bracket about 6" long on the A-arm, and goes to a plug on the wheel bearing housing. That's the wheel speed sensor.
 
Old Sep 10, 2008 | 12:56 AM
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I know that but what I am saying is inside the drivers rear rotors on the backside is another disc that has been pressed on. It looks honestly like a smaller disc with holes punched on the outside of it. To me it looks like that is how the wss picks up a signal. Am I wrong and can I just put a new rotor on without that other rotor looking piece and everything will be fine. I guess what I am getting at is how the WSS picks up it's signal. What exactly does it pick it up on?
 
Old Sep 10, 2008 | 12:58 AM
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Not sure exactly how it picks up, but for a basic rotor/pad swap it's irrelevant. Do as Hiwords and Manufan suggest - remove the caliper, the carrier, and the rotor, and install with new parts in the reverse order. Get the first one done and figured out, and the second will take all of a few minutes. If the rotor refuses to fall off, hit it with a hammer (on the curved side of the hat portion - that can help you break it free).
 
Old Sep 10, 2008 | 01:06 AM
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and don't have the e-brake on!
 
Old Sep 10, 2008 | 01:16 AM
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Is your car fwd?
 



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