sticking front brakes
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sticking front brakes - 2/24/2006 10:03:43 PM
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swartzy
Posts: 15
Joined: 1/25/2006
Status: offline
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93 s10 blazer 4.3 4x4 with 271000km on it
i have a brake problum my right caliper is sticking. I took it off and pushed the brake peddle. the caliper came out so I tryed to push it back in. it took alot of work to get it back far enough to put the pads on.And it is still sticking I NEED HELP
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RE: sticking front brakes - 2/24/2006 10:09:13 PM
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tomsblazer
Posts: 78
Joined: 12/2/2005
Status: offline
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Time to re-build or replace. The caliper is not very expensive.
Did you open the bleeder valve when trying to compress the caliper?
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98 4X4 LS 4.3L 4 Door White
73 Mustang Mach 1
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RE: sticking front brakes - 2/24/2006 10:16:10 PM
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4lowlife
Posts: 1562
Joined: 12/29/2005
Status: offline
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Yeah, replace the caliper. and bleed the entire system. You'll know all the old fluid is out when it becomes clear.
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RE: sticking front brakes - 2/24/2006 10:34:42 PM
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swartlkk
Posts: 15304
Joined: 5/1/2005
From: Waterloo, NY
Status: offline
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One crucial part of any brake change is to clean and lube the slider pins. If the caliper is not allowed to float, then you can still have a sticking caliper feel even after replacing the pads.
I will also add to the point made above. You should not push fluid back into the master cylinder. On ABS systems, this is a MAJOR no-no as the calipers are the lowest point in the system. As a result, all of the crap floating around in the brake systems ends up there. When you force the fluid back into the system, you risk pushing junk back through, causing it to lodge in the ABS pump or back up to the master cylinder where it can damage seals in either place. The ABS pump is $$$ to replace and is generally not servicable. The master cylinder isn't too expensive, but it does require bleeding the entire system after replacement.
Also, with ABS systems, just the reverse flow of fluid through the pump can damage it's internal components. I don't think your '93 has ABS, but just putting the info out there for others.
More specific to your problem, you can buy rebuilt calipers for not a lot of money and just up and replace your sticking caliper if it is the caliper piston causing the problem. While you are at it, thoroughly inspect the rubber brake hoses for cracks or other signs of aging/wear. If any signs are present, replace them now. Check both front soft brake lines as well as the soft line to the rear axle. Now would be the time to replace them if necessary.
Before attempting to break loose the bleeders, give them a shot of penetrating oil once or twice a day for a few days before attempting to loosen them. Bleeders have a tendancy to freeze up and then break off. Then you either have to EZ-out them (or other form of physical removal) or replace the caliper/wheel cylinder. I have the bleeders included in my annual maintenance to ensure that if I ever need to get them loose for any reason, that I won't have to fight with them.
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Kyle-
My Restoration Projects
Please Do Not PM for Tech Help
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RE: sticking front brakes - 2/27/2006 1:36:02 PM
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Hanr3
Wheels & Tire Moderator
Posts: 3523
Joined: 5/11/2005
Status: offline
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I will disagree, no need to pop open a bleeder screw when compressing the brakes. You won't screw up the system. If your fluid is that comtanintaed you need to flush it out. If your brakes feel spongy or soft, you may have overheated the fluid during a hard fast stop(s) and have air in the lines, this also needs to be bleed out. Plus that hard fast stop more then likely roasted a rotor or two, and now its warped. A warped rotor will give you a pulsing feel in the peddle and the steering wheel will shimmy side to side while brakeing.
When cleaning those pins, make sure to use only a rag. There is a protective coating on those pins, like a clearcoat. If you remove that protective coat your pins will rust up in no time. Then you will have to do another brake job, all to save a couple bucks on some pins. Most autoparts stores sell new pins, buy them. Well worth the money once you factor in the cost of the other parts.
_____________________________
"Some people spend an entire lifetime wondering if they made a difference.
The Marines don't have that problem."
-President Ronald Reagan
'87 S10-Blazer - SOLD
'93 S10-Blazer 4x4x4 - Sons DD, engine swap is done.
'00 S10-Blazer 4x4x4 - My
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