Brakes 1973 F100

[Yardpilot]

I replaced the master cylinder in the F100. PITA. Did the pads. Doing shoes and wheel cylinders this aft. Then it's bleeding time. The book and everything else I have read says to pull out the pin on the proportioning valve. Cool, but where is it? The lines run from the MC to a metal block, then on to the wheels. No pin of any kind in sight anywhere. It is a two part MC. That is, there are two lines and two "sinks" holding fluid. Does that mean there is no proportioning valve?

[Scott Liggett]

Start by bleeding the master.

[Yardpilot]

Bench bled and plugged during install.

[Scott Liggett]

There is a picture to help you out on this thread. Scroll down the page. I found it by googling "ford proportioning valve rod removal"

http://www.ford-trucks.com/forums/974633-weak-brakes.html

[Yardpilot]

Thanks, Scott. I finally found the blinking thing. It wasn't where it is on the parts truck (a later model) and it wasn't where it is on my neighbor's 73. It was bolted into the frame in front of the left rear wheel well. Evidently prior owner mod. Abortion about covers it. I'll leave it for now. Think I'll go with a variable in new lines later this year when I build the flatbed. Any thoughts on changing from steel to all flex lines?