[AJD] What are failed Master Brake Cylinder Symptoms?

Dave Ernst shop at cccomm.net
Thu Jul 14 06:32:54 PDT 2005


Hey Dean, Ed is correct. I have a dump truck and just went through the 
identical problem. I stalled a couple of days before I bought a rebuilt 
hydro-vac because I was trying to determine if burning brake fluid was 
cheaper than gasoline....:)
Dave

> Dean-
> Sounds to me like you have 2 problems. 1. Being the master cylinder 2. 
> Being
> the vacuum booster or hydro-vac. The Pedal fad sounds like fluid passing 
> by
> the rings and cups on the master cylinder piston and should be rebuilt. 
> The
> unexplained fluid loose tells me the booster is bad and the brake fluid is
> being sucked back into the engine intake by engine vacuum. Some boosters 
> my
> be rebuilt but I would recommend buying a remanufactured unit. The master
> cylinder you should have no problem rebuilding yourself. Good luck
>
> Ed Allandar
> Rohrer Bus Service
> P.O. Box 100 - 1515 State Road
> Duncannon, PA 17020-0100
> 717.957.5114 Direct
> 717.418.4401 Cell
> 1-800-735-6700 x223 Toll free
> 717.957.4884 (fax)
> eallandar at rohrerbus.com
>





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