Rear calipers won't always release, new calipers needed? - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 06-19-2011, 05:39 PM Thread Starter
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Rear calipers won't always release, new calipers needed?

A few weeks back while washing my truck I sprayed the rear drivers side wheel and it steamed really bad. I took off the caliper and worked the pistons back and forth until it seemed to work fine. Friday night while towing my travel trailer the opposite side hung up and the wheel was super hot and stunk enough that my wife even noticed. The truck has 130k on her is is barely used in the winter. I had an issue with my 68 vette driver rear doing this and it turned out to be the rubber hose that connects to the caliper. After replacing the caliper and having the same issue I replaced the hose and it's been fine the last 3 years. Could the hoses have broken down on my 05 also or is it more likely the calipers?

05 F-250 6.0 Lariat, FX4, 4x4 Crew Cab, Torqshift, 3.73, Power Sun/Moon Roof, SS 4in Magnaflow Turbo Back w/cat delete, Zoodad, EGR delete w/FCPD UP pipe, SCT Xcal 3, HID Light Kit, 5w-40 Rotella T6, Century Fiberglass Cap
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post #2 of 4 Old 06-20-2011, 11:19 PM
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the bracket that holds the caliper pins stick or seize up, you can find them as they have a small rubber boot on them and a small bolt holds them up place.

this video is how i fixed mine
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post #3 of 4 Old 06-21-2011, 04:52 AM
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As stated above I would start there. But that didnt end up being my problem. My calipers we hanging up, both sides (replaced one then it went to the other one). From what I have heard the rear calipers on these trucks aren't the greatest design in releasing the piston. I would start with the simple stuff before replacing the caliper, but good chance is its the caliper. I had to replaced all 4 and changed the brake fluid too. I don't know too much about the bake lines on these trucks tho, if they tend to collapse or not. Good luck!

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post #4 of 4 Old 06-26-2011, 07:30 AM Rookie
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On mine.. after I noticed they started to "smoke", I disassembled the whole thing and it turned out that there was a ring of rust on the caliper cylinder...
(which was causing it to stick in that position)

I sanded that off & regreased the whole thing with brake grease, has been working fine since.
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