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Rear break line not bleeding 1800 1971

I pulled off the caliper to see if pistons were frozen in unit. Rotor has rust residue and car was pulling to one side. Pistons worked fine. They easily pushed in with a clamp. Reinstalled the caliper and reconnected the brake line. Set up the bleeder cup and pressed the brake pedal. Nothing. Removed the brake line from the caliper and pressed the pedal again. No fluid from line. I tried sliding a wire into the line for about 10-12 inches. I still had no fluid come out when the brake was pressed. Any suggestions would be appreciated.
The rest of the wheels have no rust on the rotors, so they seem to be working.

Thanks, Ron Thompson

Addendum: I have pressure up to a unit called a "Brake valve". Is this a seviceable unit? What's the likelyhood this is available?








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    Rear break line not bleeding 1800 1971

    Is the "line" a rubber hose or a metal tube?
    The valves rarely give trouble but the rubber hoses do.
    There are plenty of valves in the salvages.
    --
    George Downs, Bartlesville, Oklahoma, Central US








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      Rear break line not bleeding 1800 1971

      George, the line coming out of the Break Valve is rubber for about 18 inches. Then it connects to steel, runs along the rear axel and goes into the caliper. I read a scenario at Goodspeed of a similiar circumstance. Volvo used to sell a rebuild kit for these units(273090-1) The valves were supposed to reduce pressure to the rear brakes so they wouldn't lock up. If I can't fix them I will remove them both. Better they lock up then have 75% of the breaks working with an accompanying loss of control.
      Ron







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