Hino FD - B Adjust Light

[nickbowers]

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

 

[spanner]

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.

 

[nickbowers]

thanks mate, i just blew out all the electronics on the air tank and it went away. Was after washing it.
Cheers