brake booster not working

I'm not familiar with your car set-up, but one problem I had with my '64 GT was removing batteries.

Halfway through the removal process, I would rest the battery on top of the steel vacuum line going to the rear of the vacuum tank, to get a better purchase on the battery. Eventially, this caused a leak at the rubber bushing where the vacuum line met the tank.

Partial brake-failure caused me to run into a hedge instead of a Plymouth. Much softer landing.

serious leak in the hydrovac. If there is vacuum at the unit, and you are getting no assist, then the booster needs to be rebuilt. Tim K.

serious leak in the hydrovac. If there is vacuum at the unit, and you are getting no assist, then the booster needs to be rebuilt.

thanks all, it seems to be an intermittent fault as this morning they came back to normal. Perhaps it will fix itself.cheers

serious leak in the hydrovac. If there is vacuum at the unit, and you are getting no assist, then the booster needs to be rebuilt.

Did you put a little neatsfoot oil in the hydrovac before installation? There's a big leather seal in there that needs to be kept soft.

nate

(just replaced a Hydrovac earlier today oddly enough.)

Good call, Nate, that seems to match the symptom. I don't recall ever seeing this, but are you supposed to give it another shot during the working life of the unit?