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Thread: HARD brake pedal question

  1. #11
    Veteran LittleRedSpirit's Avatar
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    Could also be caliper related, ae86 manual suggests a stuck piston, the way to see would be drive it and after it happens for a bit stop and see which brakes are hot.






  • #12
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    I did that with a laser thermometer and all of the brakes were hot. None remarkably more than the others, rotors and drums on each side.
    Also, I've since replaced the calipers and rear brake wheel cylinders.

  • #13
    Veteran LittleRedSpirit's Avatar
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    When you rebuild the drums its possible to put the adjuster in backwards and create a system where the drums tighten and not retract with every use. But that would just drag the rears.

    Bloody strange. I think on drum cars they proportioning valve is more of a pressure limiting valve, it should not be able to create the problems you are experiencing.






  • #14
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    Well. The new master that came is completely WRONG!
    SO, I'll have to wait and see....
    I've been looking at the adjustment on my old booster. It is adjustable. But looks like a real P.I.T.A.
    Nice information about the proportioning valve not causing symptoms like I have. I wont me so with it then.
    Last edited by ZEROPILOT; 9th July 2018 at 08:36 PM.

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