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Brake line fitting question / proportioning valve

Discussion in 'Vans' started by tonyvisone, Oct 23, 2017.

  1. tonyvisone

    tonyvisone New Member

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    desperate for help here...

    i replaced all the brake lines in this 1977 B300 motor home

    when i finished, fluid was leaking from the proportioning valve where it goes off to the rear axle. i tried tightening the fitting a lot and it still leaked. i removed it and noticed that the female fitting had an indent on the nipple. see the left fitting in the picture below.

    then i noticed that i reused the right threaded brake fitting, but not the exact one. the exact one had the raised area on it (circled in picture below).

    now i dont know if it was leaking because i had the wrong fitting or when i swap the right one on is it still going to leak if i made that indent from overtightening the wrong fitting.

    i cant find the right female threaded part anywhere. i bought a whole new valve off ebay but its slightly different.

    Imgur: The most awesome images on the Internet (at https://imgur.com/a/6Xvj2 )
     
  2. tonyvisone

    tonyvisone New Member

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  3. tonyvisone

    tonyvisone New Member

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    same picture again. trying to get this to work

    [​IMG]
     
  4. tonyvisone

    tonyvisone New Member

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    so my question is. can anybody tell me if that female fitting is supposed to be dented or not? and if not, where i can get a new one?
     
  5. ImperialCrown

    Level III Supporter

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    Welcome to Allpar. It looks like you have 2 different styles of flares. Can you re-use the old fittings? Do you have a flaring tool that can form Bubble (ISO) or Double-Flare (inverted) ends on the new line? Male and female styles must match.
    Brake+Line-Flare+Options.+Remleiding+Fels+Opties+verschillen+247autoholic+Blog.jpg
    Being a 1-ton truck, it may have lines not normally found on passenger cars or light-duty trucks.
    Is it 3/16" or 1/4" brake line?
    Is there a Mopar part # on your rear proportioning valve? I don't see it in the 1982 parts manual and that is as far back as I can see. The parts manual only shows a rear axle line 'tee' or junction that is part of the rear brake hose.
     

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