01 770 air leak at exhaust air line on firewall

Discussion in 'Volvo Forum' started by milskired, Aug 24, 2014.

  1. milskired

    milskired Road Train Member

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    Ok, so on the firewall there is an exhaust air line that comes out of that air distribution block. When the parking brake is engaged(Yellow button is pulled out) and I hit the brake pedal, air leaks comes out of this at the rapid rate! Now if I disengage the parking brake(push in the button) it will not leak. Any pointers on what to look for with this?
     
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  3. baha

    baha Road Train Member

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    replace both red/ yell. valve body with new not rebuilt part.
     
  4. Pablo-UA

    Pablo-UA Road Train Member

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    what block? can u post a photo?
     
  5. Pablo-UA

    Pablo-UA Road Train Member

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    may be u say about foot brake valve?
     
  6. milskired

    milskired Road Train Member

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    I was reading around am and trying to figure out what happens with a bad foot pedal valve.
     
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