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Porportioning valve for drum brakes?

Discussion in '40- & 55-Series Tech' started by Pete_S, Mar 14, 2003.

  1. Pete_S

    Pete_S

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    I am in the process of resealing my front axle (74 FJ40) and part of this is a rebuild of the wheel cylinders and the install of a S-10 master. (kudos to Mr. Smythe re his article)
    Anyway, I am not real sharp on the brake theory stuff. Wherein as when I repipe this cruiser should I place a proportioning valve in the system.
    And if the answer is yes.............where? ???
    Thanks for helping a brake deficent do-it-yer-selfer.
     
  2. kruzrtek

    kruzrtek

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    Not sure if what I tell you is completely usable or not. usually the proportioning valve is for a disc front, drum rear brake system. This is to allow more fluid to the front calipers(more volume), and the proportioning valve limits how much fluid goes to the rear. depending on the vehicle and weight, load, etc. that's why most aftmkt prop. valves are adjustable.
    If you are running 4 wheel drums. and the s-10 master for morefluid volume and cost of replacement, then you don't need a new proportiong valve. If your vehicle has one, it will generally be on the bottom of the booster(if equipped).
    To add one it really doesn't matter where as long as it is upright as instructed and a clean mounting location.
    Any questions just e-mail me. kruzrtk@xmission.com

    Kruzrtek
     
  3. Pete_S

    Pete_S

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    Actually I thought that was what I was told about the "combination" of calipers and drums. It was that if we were going to rebuild the system, alter it with the introduction of the S-10 master, I didn't want to miss an opportunity.
    Calipers are down the road.
    Thanks for the info!