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Old 03-21-2005, 11:02 PM
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right front wheel locks up

I have 69 chevelle
it sat for more then 5 years before i got it i rebuild the front calipers install new cylinder in the rear new master cylinder and replace front hoses
new factory front & rear brakes bleed system more then 3 times good solid brake pedal
when i apply the brakes pedal seams to sensitive it dips the front
when i apply the brakes some what hard the right front will lock up

one thing i have not ck if front rotors are the same or close thickness
i was thinking that the proportioning valve might have some rubber cup coming apart and blocking the line to the
left wheel what due you think thank you

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Old 03-21-2005, 11:11 PM
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Hehe Thats what chevelles are good for. I dont know how u fix that but, i can only think of having the rotors turned.
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Old 03-22-2005, 04:23 AM
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Are the pads adjustable? You may be able to help the problem with this. Im hard pressed to say you will ever 100% fix it. Mine does the same thing and almost everyone I know who has a car around this age does it. For some reason the (I believe to pull you away from traffic) the right front comes on first. You can adjust it to make it not so bad but it always is there a little bit. I still have drum brakes now if I did go to disc I would assume that would pretty much clear up the problems. Best I can tell you is try to adjst thing up and check all valves and lines.

Chris
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Old 03-22-2005, 05:19 AM
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Put on 2 new calipers. Sounds like your left is not grabbing as well as the right.
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Old 03-22-2005, 05:40 AM
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Look at some "free" stuff before throwing parts at the problem.

Are both front tires the same size? Are they from the same manufacturer? Are they both inflated to the correct pressure? Does one of the front springs sag? Are the shock absorbers in good condition? Are the front suspension and steering components worn out? When you rebuilt the calipers and replaced the mounting hardware (you did put in new mounting hardware?), did you accidently pull an o-ring out of the groove and wedge it between the caliper and the bolt? Did you thoroughly inspect the groove for all of the o-rings including the square cut sealing ring to assure there was no corrosion causing the ring to "ride high"? Did you thoroughly inspect the pistons to assure there was no corrossion bubbling the plating? I don't think your car is new enough, but if you encountered phenolic pistons, did you chuck them in the trash and buy new ones?
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Old 03-22-2005, 10:50 AM
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Check the brake hose for the left as well...if it's clogged, it won't grab near as well...Mine did the same thing...was a $5.00 fix.
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Old 03-22-2005, 08:43 PM
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Might check the steel brake lines too. Might be something plugging one up, causing the other side to lock up.
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Old 07-08-2005, 10:37 PM
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this weekend i install new line to right side now all metal lines hoses are new
i did try what you recomended had my boy push on the pedal till some drag
both caliper are under pressure and slowing the tires aprox the same

one question if one of my brake caliper braket is bent will this couse this problem
i dont think they are bent
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