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Rear brakes question

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by pornorob, Mar 2, 2005.

  1. pornorob

    pornorob 1/2 ton status

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    when I step on the brakes the pedal goes nearly to the floor and once the brakes start to engage they just lock up. I am running a dana 60 in the rear. I was wondering if the brakes just need to be bled or is it something more serious(or costly?). thanx guys
     
  2. pornorob

    pornorob 1/2 ton status

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    no idea huh ??? wow I thought this would be a pretty basic question.
     
  3. Nicks 72

    Nicks 72 Registered Member

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    When you say it has a Dana 60 in the rear,was that a transplant or original. Is this a new problem to a truck that was braking good before or had you just installed different parts(different axles,master cylinder,porportioning valve etc) and then after this you ended up with this problem. Does it have vacuum or hydrostat for PBrakes. Need more specifics.
    Nick
     
  4. the beast

    the beast 1/2 ton status

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    Yup, need a little more background
     
  5. pornorob

    pornorob 1/2 ton status

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    bled the brakes and that fixed the problem . The fluid was almost black. can anyone tell what that means? is it just old or is it contaminated?
     
  6. mouse

    mouse 1/2 ton status

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    Brake fluid goes bad by absorbing moisture from the air, lowering its boiling point. The dark color can be attributed to rubber components breaking down in the brake system - master cylinder, wheel cylinders, brake lines, etc. Some people (race vehicles especially) recommend changing brake fluid atleast once a year. You should be fine if the bleed job fixed it up.
     

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