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#16
09-13-2008, 05:37 AM
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Re: Is my proportioning valve shot?
The adjusters in the brake drum adjust the rest position of the shoes and affect both how far the handle needs to be pulled up and how far the pedal needs to be pressed down. While the parking brake cable could be adjusted to do the same thing, you'd have to adjust it a ton to get to the right point, it's not designed for that.
Our rear brake adjusters are supposed to take up the slack every time you apply the brakes in normal use, they have tiny little serrations that strip off easily. One of mine went when I put the parking brake on, it came up the normal amount, then went "POP" and the handle came up about two inches further. If you remove the console, you can easily see that one cable is farther forward than the other. On my other car, I didn't notice that the handle was up too high but it did seem that the pedal was mushy. I was jacking the car up to do something else and noticed that I could turn one of the rear wheels by hand.
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Woodie 98 Metro and 06 Aerio SX Don't waste your vote on one or the other of the Republicrats, vote for Gary Johnson and really do something for a change http://www.garyjohnson2012.com 
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#17
09-18-2008, 06:13 PM
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Re: Is my proportioning valve shot?
Simple tests are the best. Jack up the rear of the car, have someone press the brakes at varying pressures and make sure the rear tires won't spin with moderate to firm pressure. If the brakes grab they are working. The wear at the front and back of the pad may be all the wear you see until they wear down a bit. The amount of wear and dust you get is going to depend heavily on driving style. Lead foot it for a couple of weeks and break hard and you will probably see a bit more wear.
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#18
05-22-2011, 01:02 PM
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Re: Is my proportioning valve shot?
So how did this story end? Did I miss it?
On my 96 Metro I am troubleshooting a front brake sticking problem but not sure if there is a bearing that could be causing the heating of the rotor. There is no leaking front the cylinder. Can these brake cylinders be rebuilt, cleaned up, or is it best to just replace it?
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1998 Chevy Tracker 4dr, 4wd, auto, 1996 2dr Metro LSi, 3Cyl. 5spd, 107k mi. My other car...in need of repair it won't start any longer 1995 2dr Tracker Conv. 4wd, 5spd, A/C 170k mi. (My Fav) Last edited by gumby_ct; 05-22-2011 at 01:43 PM.
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#19
05-23-2011, 03:52 AM
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Re: Is my proportioning valve shot?
Ended the way many of these end, with the original poster disappearing, we'll never know if we helped him fix his problem or if he's dead because of his bad brakes and bad advice.
 Sticking front brakes are either stuck caliper pistons, stuck caliper sliders, or collapsed rubber hoses.
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Woodie 98 Metro and 06 Aerio SX Don't waste your vote on one or the other of the Republicrats, vote for Gary Johnson and really do something for a change http://www.garyjohnson2012.com Last edited by Woodie83; 05-24-2011 at 02:57 AM.
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