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Right front brake will grab and not fully release

Tiny
YOGI BEAR
  • MEMBER
  • 1989 FORD F-150
  • 6 CYL
  • 4WD
  • MANUAL
  • 200,000 MILES
I replaced the hose and bled that side. Pads were still like new. Rotor was in good condition. (Do I need to bleed the entire system? I didn't. ) I drove it about 8 to 10 miles with no problems. Then that same brake started grabbing again. If it wont release I can back up a foot or so and then forward until I hit the brakes again. I have not tried turning off the ignition.
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Friday, January 1st, 2021 AT 5:29 AM

9 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
This sounds like the caliper is not releasing which would mean the square cut o-ring on the piston is seizing and not allowing it to retract. Then when you reverse it pushes the piston back enough for it to move.

Here is a guide that will help with this replacement:

https://www.2carpros.com/articles/brake-caliper-replacement

You will then need to bleed the system and I would suggest flushing and bleeding the entire system rather than just the leg that you opened. Not only to make sure all the air is out but to make sure you have all new fluid.

https://www.2carpros.com/articles/how-to-bleed-or-flush-a-car-brake-system

Attached below are the instructions from the manual as well.

Let us know what questions you have. Thanks
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Wednesday, March 10th, 2021 AT 1:32 PM
Tiny
YOGI BEAR
  • MEMBER
  • 7 POSTS
Thank you very much. This info will be very useful. I'm just a shade tree mechanic. Because of the money I have to do the repairs myself. Thanks again. Yogi.
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Wednesday, March 10th, 2021 AT 1:32 PM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Totally understand. Let us know what happens but I am pretty sure that is the issue. It is normally the caliper or the rubber hose and if you replaced the hose then that leaves the caliper. Thanks
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Wednesday, March 10th, 2021 AT 1:32 PM
Tiny
YOGI BEAR
  • MEMBER
  • 7 POSTS
I'm going to replace the left brake hose too. Also both calipers. Then flush out the old fluid and bleed it the way you advised. I will let you know how it goes. Thanks, Yogi
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Wednesday, March 10th, 2021 AT 1:32 PM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Sounds like a great plan. Please let us know when you get it wrapped up. Thanks for the update.
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Wednesday, March 10th, 2021 AT 1:32 PM
Tiny
YOGI BEAR
  • MEMBER
  • 7 POSTS
Two hoses, two calipers, flushed the entire system. Brake fluid with nasty bleed the system like you suggested everything seems to be working so far cross your fingers. Thanks for everything.
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Wednesday, March 10th, 2021 AT 1:32 PM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
That is great news and thanks for the info as I am sure that will help others. Glad it worked out. Let us know if you need other info in the future. Thanks for using 2CarPros.
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Wednesday, March 10th, 2021 AT 1:32 PM
Tiny
YOGI BEAR
  • MEMBER
  • 7 POSTS
I wish we could communicate verbally. I will keep you posted on what's going on, front brakes are great. Yogi
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Wednesday, March 10th, 2021 AT 1:32 PM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Understood. It would be nice and make things a little easier but that would unfortunately not benefit the others that will visit this page in the future who have the same issue as you do. The idea and purpose of the website is to help as many people as possible and the way to do that is for us to communicate here so that all others that visit this can follow through our conversation and that will lead them to the solution for their issue as well. Thanks for keep us posted.
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Wednesday, March 10th, 2021 AT 1:32 PM

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