The Ford Barn

denver9 · 07-13-2014, 01:26 PM

I have hydraulic brakes on my 31 Town Sedan. They were installed by the previous owner several years ago.
The brakes have always worked really well until the vehicle sat for a period of time. Recently, we went on an extended vacation and the car was parked for at least six weeks.
Upon our return I started the car and began to back it out of the garage. to my surprise, the brake pedal went all the way to the floor when first applied.
I pumped the pedal several times and the pedal came back to normal and the brakes work fine. After sitting for a couple of days the brakes are still normal.
My guess is that the master cylinder slowly allowed the fluid to leak past the cylinder, normalizing the pressure on each side of the piston.
I am considering replacing the Master cylinder with a dual reservoir unit (the current one is a single cylinder model.)
What are your thoughts on this? Is my diagnosis correct?

07-13-2014, 01:26 PM	#1
denver9 Member Join Date: Mar 2012 Location: Hemet, Ca Posts: 55	Juice brake problems I have hydraulic brakes on my 31 Town Sedan. They were installed by the previous owner several years ago. The brakes have always worked really well until the vehicle sat for a period of time. Recently, we went on an extended vacation and the car was parked for at least six weeks. Upon our return I started the car and began to back it out of the garage. to my surprise, the brake pedal went all the way to the floor when first applied. I pumped the pedal several times and the pedal came back to normal and the brakes work fine. After sitting for a couple of days the brakes are still normal. My guess is that the master cylinder slowly allowed the fluid to leak past the cylinder, normalizing the pressure on each side of the piston. I am considering replacing the Master cylinder with a dual reservoir unit (the current one is a single cylinder model.) What are your thoughts on this? Is my diagnosis correct?