Help major problem with brakes
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Senior User
Joined: Jul 2010
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From: Ventura, CA
Help major problem with brakes
I was on my way home and my brake pedal went to the floor; well almost to the floor. I can stop but the travel is very long. I bleed the breaks and adjusted them with no luck. Could it be the booster? I have 4 wheel drum on a 73 F-250 any ideas?
Thanks,
Mike
Thanks,
Mike
Senior User
Joined: Jul 2009
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From: Up North
Master cylinders usually have two sections with an internal piston that compresses the brake fluid. Most likely the front section of the piston seal which operates the front brakes has failed.
The other section of the piston operates the rear brake cylinders, which most likely is still working which is why you are still getting some braking.
The other section of the piston operates the rear brake cylinders, which most likely is still working which is why you are still getting some braking.
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Senior User
Joined: Jul 2010
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From: Ventura, CA
Well then it is settled I will replace the master today and let you guys know what is happening.
There is no fluid leaking or loss any where that is the weird thing. I figured that if something went wrong the fluid would leak, but I guess not.
Thanks again.
Mike
There is no fluid leaking or loss any where that is the weird thing. I figured that if something went wrong the fluid would leak, but I guess not.
Thanks again.
Mike
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Senior User
Joined: Jul 2010
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From: Ventura, CA
In time in time it will all have the goods. I just found out I will be laid up for 6 weeks after back surgery and after that another 3 for physical theropy. So She is gonna have to wait. Surgery in on the 26th of Aug. This sucks!
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Good luck on your surgery.
Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
If the master cylinder is leaking, it usually leaks into the power brake booster.
The brake differential proportioning valve could also be the cause. It's brass, develops leaks where the steel lines thread in.
The brake differential proportioning valve could also be the cause. It's brass, develops leaks where the steel lines thread in.
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Senior User
Joined: Jul 2010
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From: Ventura, CA
So if the valve is leaking then it could be the problem? I thought that only disk/drum needed a proportioning valve? Not Drum/drum. If the valve is bad would this cause the pedal to goto the floor or an inch away?