Brake Issues
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Freshman User
Joined: Feb 2010
Posts: 45
Likes: 0
Brake Issues
I have a 1977 F250 4WD with a Dana 60 rear and Dana 44 front. The brakes work, but might as well not be power. The amount of pressure I have to apply is ridiculous.
I have replaced the front brakes (disc) the rear brakes (drum) the master cylinder, and the vacuum booster. I have verified the seals on the vacuum booster as well as 21 to 23+ inches of mercury.
The only thing that hasn't been replaced is the proportioning valve, which I cannot find new.
Do any of you with a 1977 highboy have this issue? I have heard that these trucks are all built this way, but I would like to hear it from another owner.
I have replaced the front brakes (disc) the rear brakes (drum) the master cylinder, and the vacuum booster. I have verified the seals on the vacuum booster as well as 21 to 23+ inches of mercury.
The only thing that hasn't been replaced is the proportioning valve, which I cannot find new.
Do any of you with a 1977 highboy have this issue? I have heard that these trucks are all built this way, but I would like to hear it from another owner.
Post Fiend
Joined: Jan 2006
Posts: 5,037
Likes: 9
From: Kasson, Minnesota
I don't have to force mine down too much. I did replace my Proportioning valve with an aftermarket one though when I redid my brake system. Whats nice about an aftermarket valve is you can adjust the pressure between front and rear brakes if need too.
