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Thread: Hino FD - B Adjust Light

  1. #1
    Senior Member
    Join Date
    Oct 2009
    Location
    Victoria, Australia
    Posts
    240

    Hino FD - B Adjust Light

    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
    http://i46.tinypic.com/ibf1it.jpg
    Regards,
    Nick Bowers
    http://www.doottrucks.com.au

  2. #2
    Member
    Join Date
    Sep 2011
    Location
    Sunshine Coast Queensland Australia
    Posts
    49
    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. #3
    Senior Member
    Join Date
    Oct 2009
    Location
    Victoria, Australia
    Posts
    240
    thanks mate, i just blew out all the electronics on the air tank and it went away. Was after washing it.
    Cheers
    Regards,
    Nick Bowers
    http://www.doottrucks.com.au

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