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73-87 Chevy _ GMC Trucks => Brakes, Frame, Steering & Suspension => Brakes and Braking Systems => Topic started by: TerryY on June 19, 2015, 08:47:14 pm

Title: Hydroboost Accumulator
Post by: TerryY on June 19, 2015, 08:47:14 pm

Is it possible to just replace the accumulator?

Pretty sure it is just my accumulator because the brakes work fine as long as the motor is running. Motor stops and pedal dives. No 4 safety pushes here. Boost is gone as soon as the pump stops turning.

Title: Re: Hydroboost Accumulator
Post by: zieg85 on June 20, 2015, 12:22:09 pm

Pretty sure that is how it is supposed to be.  Vacuum boost works until all the vacuum is used up/lost.  Hydroboost is lost as soon as the pump/engine stops