78 Proportioning valve stuck
Thread Starter
|
Senior User
Joined: Jul 2003
Posts: 136
Likes: 0
78 Proportioning valve stuck
Help...I broke a rear brake line and the brake proportioning valve is now stuck. I have repaired the line but cannot figure out how to reposition the proportioning valve to allow fluid to the rear wheel cylinders. Does anyone have a way of doing this? Thanks.
Logistics Pro
Joined: Jun 2003
Posts: 3,924
Likes: 273
It's very touchy. Slightly break a line loose on the front with somebody putting moderate pressure on the pedal. Tighten it up when the light goes out. I've had to go back and forth until I got it right, before.
Thread Starter
|
Senior User
Joined: Jul 2003
Posts: 136
Likes: 0
Yep...I have tried that a number of times. I don't have the light hooked up. It is on my 66 and it was part of the brake conversion. I will try again tomorrow and put an ohmeter on the brake light warning switch. I had it once as I was able to get some fluid pressure out of the rear bleeders but when I re-bled the whole system it stuck again. A new Ford Combination Valve isn't available any longer so I would like to get this working instead of gambling on a junkyard part. Believe it or not I still have the holding pin I used way back then when doing brake jobs. If I can get it to reposition, I will use the pin when I bleed the system. Thanks.
Thread
Thread Starter
Forum
Replies
Last Post
Punisher74
1967 - 1972 F-100 & Larger F-Series Trucks
14
Apr 29, 2017 05:35 PM
s.squared-39
1973 - 1979 F-100 & Larger F-Series Trucks
11
Dec 5, 2016 04:46 PM
nonrev321
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
1
Apr 12, 2016 07:59 AM
nonrev321
Brakes, Steering, Suspension, Tires, & Wheels
0
Apr 12, 2016 06:09 AM
MustangGT221
1987 - 1996 F150 & Larger F-Series Trucks
14
Feb 1, 2006 06:08 PM
