Brake Frame Bracket
Moderator
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
If I'm seeing things correctly, that is the device that regulates the amount of
brake fluid pressure applied to the rear brakes, the determining factor being the
amount of weight in the rear end. This is to avoid locking up the rear brakes
(which can have negative effects, especially on snow or ice).
I would keep it if I were you.
brake fluid pressure applied to the rear brakes, the determining factor being the
amount of weight in the rear end. This is to avoid locking up the rear brakes
(which can have negative effects, especially on snow or ice).
I would keep it if I were you.
Thread Starter
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Senior User
Joined: Jan 2005
Posts: 274
Likes: 0
From: Pittsburgh
I believe you're correct on what it does, but my concerns now are if it even still works after almost 25 years, or if i can get a replacement. Also the thing just spins around freely there is no stop point or adjustments of any sort. I have no way of knowing if set correctly when I bolt it back on.
It kind of scares me more then anything..
It kind of scares me more then anything..
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Senior User
Joined: Jan 2005
Posts: 274
Likes: 0
From: Pittsburgh
OK, Its called Rear Height Sensing Proportioning Valve (If anyone cares)
And Ive found more information on it then I ever wanted to know.
-------------------------------------------------
Ford Authorized Rear Height Sensing Proportioning Valve Modifications For E & F Series Vehicles
Ford Parts and Service Division recently issued two Technical Service Bulletins (Ford TSB 89-25-15 and 89-25-16) concerning the proper modification and adjustment of the rear brake height sensing proportioning valve for vehicles that have undergone rear suspension and/or wheelbase modifications.
Full 12 page PDF document can be downloaded here:
http://www.ntea.com/docid/default.aspx?id=16722
And Ive found more information on it then I ever wanted to know.
-------------------------------------------------
Ford Authorized Rear Height Sensing Proportioning Valve Modifications For E & F Series Vehicles
Ford Parts and Service Division recently issued two Technical Service Bulletins (Ford TSB 89-25-15 and 89-25-16) concerning the proper modification and adjustment of the rear brake height sensing proportioning valve for vehicles that have undergone rear suspension and/or wheelbase modifications.
Full 12 page PDF document can be downloaded here:
http://www.ntea.com/docid/default.aspx?id=16722
Post Fiend
Joined: Nov 2005
Posts: 7,437
Likes: 4
From: Charles Town, W bygod Va
anyone ever made up a line to bypass it? I never felt the rear brakes on my dump truck were doing their part and I have the bias valve. I'd be interested in seeing exactly how that valve works...Come to think of it my 88 toyota has one too!
Fleet Mechanic
Joined: May 2009
Posts: 1,460
Likes: 6
From: Bay Area, Unfortunately
I bypassed it on both my GMC and my F250. I never really noticed much of a difference (but I live in warmer weather. If I recall, it had a funny metric thread on one end. I cut it off, bought a standard brake line fitting, put it on and re flared the line. I then bought a coupler and joined the two pieces together. The other line of the valve had standard fittings, so it was easier to buy a standard to standard fitting rathr than metric to standard.
Thread Starter
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Senior User
Joined: Jan 2005
Posts: 274
Likes: 0
From: Pittsburgh
If the suspension has been modified and a valve is present perform procedure "A"
Procedure "A"
unbolt the linkage and return to customer.
attach valve shaft positioner below.
------------
The Problem is the valve itself is $154, and if you need to replace that,
then your spending 150 bucks on a valve that dosnt do anything anymore..
------------
Maybe another ford uses the same hose??
Procedure "A"
unbolt the linkage and return to customer.
attach valve shaft positioner below.
Code:
Item Number MSRP Core Price Price E9TZ2W125A $12.48 $0.00 $8.99 RETAINER- BRAKE LOAD
------------
The Problem is the valve itself is $154, and if you need to replace that,
then your spending 150 bucks on a valve that dosnt do anything anymore..
Code:
Item Number MSRP Core Price Price E8tz2b547b $285.31 $0.00 $154.07 VLV ASY-BRK LOD SNS
------------
Maybe another ford uses the same hose??
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Senior User
Joined: Jan 2005
Posts: 274
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From: Pittsburgh
With an additional female to male adaptor this might work, also some sort of mounting bracket.
3/8" X 24 I.F. FEMALE SAE BRAKE ADAPTER FITTING
russellperformance.com
3/8" X 24 I.F. FEMALE SAE BRAKE ADAPTER FITTING
russellperformance.com
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Postmaster
Joined: Apr 2008
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Likes: 1
Swatter, you will not be able to re-used that hose if you're bypassing the thing entirely, as the upper connection uses a banjo bolt much like the front calipers do. Instead, what you can do, is to simply use a hose from an F150 truck that did not have that valve (I actually used the F150 hose to repair the brake system in my Lincoln) or really any Ford truck with a RABS setup ('89-'96) - those have your regular 3/16" line fitting on their upper end, so you can directly bolt them up to the steel line on the frame.
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Senior User
Joined: Jan 2005
Posts: 274
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From: Pittsburgh
Just want to say thanks again that worked perfectly.
There was even a mount already cut into the cross member exactly where it needed to be (hidden under where the valve was),
all I had to do is clip it on, then I ran all new lines to the front. The whole thing only cost $57.
------------------------------
I do still have one question if anyone can help?
The banjo bolt that was on the truck has a hose connected to the back end that just runs up to the frame and clips on.
The hose isnt connected to anything just capped off. I cant understand wth this is all about. If I bleed the lines the
hose will just be filled with air right? and that cant be good? I dont think i can even find a replacement for it,
but I dont know much about brakes. any help on this would be appreciated thanks.
Rubber brake hose attaches to the backend of the banjo (top right).
There was even a mount already cut into the cross member exactly where it needed to be (hidden under where the valve was),
all I had to do is clip it on, then I ran all new lines to the front. The whole thing only cost $57.
------------------------------
I do still have one question if anyone can help?
The banjo bolt that was on the truck has a hose connected to the back end that just runs up to the frame and clips on.
The hose isnt connected to anything just capped off. I cant understand wth this is all about. If I bleed the lines the
hose will just be filled with air right? and that cant be good? I dont think i can even find a replacement for it,
but I dont know much about brakes. any help on this would be appreciated thanks.
Rubber brake hose attaches to the backend of the banjo (top right).
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