back brakes locking up?
Trying to find a way to fix the problem of my back brakes locking up after truck is parked? I have changed wheel cyl and put new seals in rear.
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are they drums or disks ?
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proportioning valve
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is there a good replacement to buy?
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Originally Posted by chaney2051
(Post 796533)
Trying to find a way to fix the problem of my back brakes locking up after truck is parked? I have changed wheel cyl and put new seals in rear.
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Is the proportioning valve adjustable?
My dually does it mostly after being parked for a short time. After it is driven and warmed up the problem seems to dissapear. I haven't had the rear drums off yet but it will be soon. Would be nice to fix problem before snow. |
yea that is exactly what mine does.. drive it, park few few minutes-hours and then get back in it to take off and the lock up.. once i drive a very short distance they are fine again.. But its a real bad feeling when they do it at top of a hill you have to go down.
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Re: back brakes locking up?
Factory proportion valve is not adjustable, but install an aftermarket adjustable one and all your problems will go away, after removing the factory 1 of course...
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back brakes locking up?
My 2001 came with 4 wheel disk. So I've never had this problem
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Try adjusting them first before you do anything else. Mine used to do that until I discovered the self adjusters refuse to keep them tight enough under normal use. I have a long driveway I back into and I use the parking brake to stop several times backing in about once a week and that keeps them up. No more lockup in cold/wet weather unless I get lax about stopping with the parking brake for too long.
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