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Hino FD - B Adjust Light

Discussion in 'Trucks' started by nickbowers, Sep 3, 2012.

  1. nickbowers

    nickbowers Senior Member

    Joined:
    Oct 18, 2009
    Messages:
    271
    Location:
    Victoria, Australia
    Hi,
    We have a 98 model fd here that is buzzing and showing the light pictured below when you touch the brakes.
    All the brakes are fine and i just adjusted them, they have plenty of meat left on them.
    Has anyone seen this before?
    Cheers,
    Nick
    [​IMG]
     
  2. spanner

    spanner Well-Known Member

    Joined:
    Sep 2, 2011
    Messages:
    55
    Occupation:
    Heavy Equipment Fitter
    Location:
    Sunshine Coast Queensland Australia
    Nick,
    This warning signals excessive travel in either the front or rear brake master cylinder. There is a simple push switch screwed into the spring end of each air over hydraulic cylinder. If you have no fluid leaks and brakes are adjusted it will be either a faulty switch or internal leakage in the master cylinder. I have seen both. You can unplug switches one at a time to work out which one is bad.
     
  3. nickbowers

    nickbowers Senior Member

    Joined:
    Oct 18, 2009
    Messages:
    271
    Location:
    Victoria, Australia
    thanks mate, i just blew out all the electronics on the air tank and it went away. Was after washing it.
    Cheers