Ford Brakes/Suspension :: 1979 F150 - Disk Brake Caliper Replacement / Evaluation
Apr 13, 2012
I have a '79 F150 4wd and was wondering what would indicate a caliper needing replacement. I'm already going to replace everything on my rear brakes, they are completely trashed. However, the fronts seem OK, NO indications of leaks or seizing both sides of the rotors appear to be evenly "used" I guess. The inner pads do seem to be thicker than the outer pads is this normal? Anything I should be specifically looking for before I have the rotors turned and put a new set of pads on?
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I replaced the master cylinder 2 months ago and now every now and then the rear lock up for a second. its only happened a couple of times. Pulled the wheels and everything is in place with nominal wear with clean drums and rotors. Am at a loss as to why this is happening.
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I was wondering if there was how to on doing the MC replacement? The brake pedal goes to the floor almost every time you press on the brake?
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I have a 10 inch lift and 37's on my excursion 2000 7.3l. I need to upgrade the breaks, the tires make it very hard to stop.
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My driver side caliper will not bleed fluid, is it safe to say that the caliper needs replacing.
2000 f 150 4.2 v6 232,000 miles
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I have a 79 f150. I changed two brake lines and master cylinder and bleed,and more bleed,but still very soft all most to floor? wheel cylinders look good.
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I pulled a brake caliper off for inspection, and when I reinstalled it, I managed to strip one of the holes on the caliper bracket when putting one of the 7mm bolts back in - haste makes waste, ya? So, I am trying to find out my options, is it possible to get it re-threaded, helicoiled, or is it toast and I need to buy a new one?
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I just replaced the front break pads. I didn't replace the rotors or get them machined, didn't look like they needed them. Once I pushed on the brakes (truck off) I noticed that brake fluid spilled out the brake reservoir. I'm guessing it happened when I compressed the piston into the caliper? I took some of the fluid out of the reservoir and now its at MAX (I didn't bleed them). I've only been only be able to stop and go on the driveway (I'm waiting on a new radius arm bracket). The brakes seems spongy, the brake hits the floor. ABS and Brake lights came on then turned off once I started to pump them when I turned the truck 'on'. Do I just need to actually drive and "break" the breaks in?
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I am having trouble big time getting air out of my brake lines. I put new front pads and rotors on and also had to replace the brake line coming from the caliper as it kind of crumbled and needed to replace the next line up that goes to the ABS block on the left front. After doing this, I bled that wheel only and at first it was ok until the brake line on the right front at the caliper also broke when I was pushing on the brake pedal with the truck running, spewing fluid all over. I have tried to bleed using a decent vacuum bleed setup from Advanced Auto but keep getting massive amounts of air coming out and when I start the truck and hit the brake pedal, it goes to the floor. Could the master cylinder be bad? I have checked every connection that I made and all other connections and there are no leaks at all. I am stuck in the garage! The truck is a 1999 F150 4x4 with 4 wheel ABS.
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I recently purchased a mutt of truck, a 97' F150 heritage w/5.4 Triton motor, 1/2 ton 2WD short bed.
Having a brake issue, the pedal keeps fading. I noticed it first while sitting in traffic on a down hill grade. I am holding the pedal and notice it starts to creep down slowly, I pump it up and it firms up then starts collapsing again. So general logic says hydraulics are loosing pressure right?....No leaks anywhere, so it must MC tight?
I have replaced the master cylinder, brake booster, and both rear wheel cylinders. Long story short they all needed it, truck has 265K+ on the body with 95K on the motor. The only thing I did not do by standard is bleed the MC on the bench, I installed and long bled starting with the right rear working my from longest distance to shortest (wheel speaking). So when bleeding I did of course get air coming out because of the new parts but I still have the same fade issue.
I am confident there is no air in the lines, I have bleed a quart of brake fluid through just to be sure. I have read a lot about proportioning valves and ABS stuff.
I will try and get some vehicle specific photos and attach have hit a road block with this. I am leaning towards the ABS valve thingy mounted on the drivers fender that has four lines attached (2 in and 2 out). Other than that it comes down to hard lines which have no leaks.
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I have a '90 F150 and both the yellow ABS light and the red BRAKE light are on.
It was fine until my buddy did a little brake work for me, including replacing a couple brake lines and a parking brake cable. He bled the system at the lines going into the front calipers because the bleeder valves on the calipers where corroded and frozen. I then replaced the calipers and bled the system properly. Three times. I don't think the problem is from the brake work.
The brakes still work, by the way. The pedal just feels a bit spongy and I think the brakes don't work as well as they could.
If the truck is not running, I can pump the brakes a few times, and it will make a sound like it's sucking air a few times. Then the sound stops and the pedal firms up.
If the truck IS running, it keeps making the sucking air sound no matter how many times I pump it, and the pedal feel stays the same. I think it might be a bad brake booster.
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I took my 2010 F-150 for brake job and ended up with brake fluid in intake!! How that happened?
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86 f150 4x4
brake pedel goes straight to the floor but if u give it short pumps of the pedel it grabs but barley....master cylinder or the booster?
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I have a 2001 F150. Front brakes replaced a few months ago. Last night, I realized my rear brake lights weren't working. I'm not sure how long they've been out or if it's related to the bigger problem.
While testing the brake lights by pressing the brake pedal, the pedal seemed to give out and sink lower. While driving the brakes worked but only when I pushed the pedal all the way in. Eventually the ABS light came on and stayed on.
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my park brake will work when pushed to the floor but when i pull the release lever it will not disengaged.
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Two weeks ago my front left wheel would start shaking like hell when I brake, not at first but after say may eight miles of driving. I have never been in a vehicle shaking so violently and after proceeding from a stop it would continue until it cooled down. I tore out the caliper and made sure everything was clean and lubed and also to make sure I did not put the pads on wrong. Fast forward one commute and the same crap. I could not go faster than 45 mph without feeling like it was going to disintegrate.
When I got home the damn thing was smoking. I managed to get it to the dealership this afternoon and two hours later the guy told me that the guides just needed some cleaning and grease. They did not want to charge me anything (draw your own conclusion) for it. I was told they drove it up/down hills and it was alright. I left kind of suspicious and four miles later the problem revealed itself again. My next thought it maybe axle end play, bad bearings or joints? Intermittent why? 2004 f150 lariat 4x4 ....
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I'm trying to replace the front brake rotors on a 97 Ford Explorer (AWD, 5.0 L). I've removed the calipers and pads - but can not loosen the old rotors. It looks held on by rust - but do I need a special rotor pulling tool?
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My problem, Brakes. I hardly have any at all (pedal all the way to the floor and hardly stop), yet the front pads are dragging, and heating the rotors. Maybe a bent line? I bled the fronts, and as soon as I loosened the bleeder nipple, a good bit of fluid came out, without pressing the pedal of course. It's dark out now or I would inspect for bent lines. Could there maybe a problem with the booster?
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I have a 1997 F150, 4X4. My mechanic says its time for new brakes and was curious if it would be worth possibly converting from drum brakes to disc brakes??
My mechanic has quoted me $300 to do the rear brakes, would it be worth the extra money to convert??? I really don't care for drum brakes. I have done a search on the internet and every time it brings up the issue with the parking brake.
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What would cause the rear drum brakes to lock up upon hard braking? I have replaced the wheel cylinders, installed new spring kit, and adjusters.
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I have a 1999 F350 single rear wheel Superduty truck that will not allow the right rear caliper to fully release. I replaced the caliper/mounting hardware/pads/rotor. The problem continued so I replaced the rubber hose to the caliper. Problem continues. I'm thinking possibly the center rubber brake line at the differential (where it splits and goes right/left) but at this point I am guessing. Maybe proportionate valve but I know nothing about them.
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