Trouble shooting the ultimate spongy brake pedal
Hey all,
just purchased a 2000 bluebird bus, TC front engine. After replacing a bad alternator my next job is to fix the hydraulic braking system. The symptoms are: Almost no pressure felt in the pedal until the final 10% of pedal travel and brake light and buzzer both sound constantly from moment brake pedal is first touched, until engine is shut down.
I tried topping up reservoir to see if the warning would stop, but no luck. Previous owner said he thought it was a leak, but my feeling is it could be a failed pump? my research has made me think theres a hydraulic engine driven pump, as well as an electric back up.
Whats the best way to isolate and diagnose which is the problem?
Thanks in advance for any help!
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