Front Brakes Sticking
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From: S. Mississippi
Front Brakes Sticking
I've got a problem with my front brakes on my 82 f-150, they stick, are very sensitive when you press on them. i've tried bleeding the system to make them back off but i can never seem to get it right. any ideas? i'm pretty sure its the proportioning valve...but i need to know where to start if thats not the case. thanks any help is appreciated.
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Front Brakes Sticking
Did you just put new pads on the front? They will usually stick after you put new pads on because the piston is way out in the caliper bore with the thinner pads. After awhile, corrosion will form behind the piston. When you put new pads on, you push the piston back up in the bore over top of all the corrosion and then they will start sticking and overheating the rotor. I wouldn't suspect the proportioning valve, since it affects the rear brakes more than the front.
Whatever caused it, just go and get rebuilt calipers. They are only like $12.00 apiece.
Whatever caused it, just go and get rebuilt calipers. They are only like $12.00 apiece.
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Joined: Dec 1999
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Front Brakes Sticking
Had the same problem in my 83 4x4. Turned out to be the choke pull off had an vacuum leak causing the power boost to lose its vac and then the front brakes would lock whenever brakes were required. (Exciting up here in the frost, snow) Changed it out and much better. Good Luck
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Front Brakes Sticking
If they are the same as the ones on my '83 E 150 they might have a plastic piston in the caliper. If the truck has sat around and not been used for a long time they tend to stick. Rebuilt calipers are cheep and will fix the problem. I had the same problem with a '84 Aries, I think that the pistons seem to swell over time, especially if sitting, unused. I am kind of curious about this myself so if someone can shine some technical light on these early 80's brake pistons I would appreciate it.
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Front Brakes Sticking
Well now i've got an even bigger problem, the sticking brake, *drivers side* has completely wore down the brake pad..its grinding against the rotor. I'm getting new calipers in the morning and new shoes to put on it... hopefully this allieviates the problem. And no the pistons in my brake calipers are metal...i've had to change them once already...first time i used an older pair that i had lying around... my fault huh... ? 
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Front Brakes Sticking
When you put the new calipers on, make sure you scrape and clean the area where the caliper fits to the spindle. The caliper only has one piston on one side, so for the other pad to help stop the truck, the caliper has to slide in the spindle bracket. You can put a LITTLE bit of grease on the slides but make sure it's HIGH TEMP grease. Regular grease may melt and run down on the rotor.
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From: Northern Virginia
Front Brakes Sticking
Pistons in my 81 are plastic of some sort. Had my pass. side caliper stick a few years ago. Pulled it appart, cleaned it, put it back together, flushed system, and it was good as new. I think the fluid was contaminated due to age. If I had it to do over again, I'd get loaded calipers.
If piston was sticking, and your have worn down the pads, be careful you have not warped rotor. If it is scored, might as well replace rotor when you replace caliper and pads.
We're not talking big money here. Get rid of the worry once and for all, flush brake system, replace parts, Flush brake system again, bleed, done.
Good luck.
Raul
If piston was sticking, and your have worn down the pads, be careful you have not warped rotor. If it is scored, might as well replace rotor when you replace caliper and pads.
We're not talking big money here. Get rid of the worry once and for all, flush brake system, replace parts, Flush brake system again, bleed, done.
Good luck.
Raul
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