Brake Proportioning valve
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Laughing Gas
Joined: Sep 2012
Posts: 1,100
Likes: 6
From: Georgia
Brake Proportioning valve
I'm pretty sure the one on my truck is bad. It's the type with the lever that moves when you add weight to the bed, as seen on the left in this photo:
I'm assuming they are fairly expensive, but I haven't found one online, don't know what the part number is to search for.
Anyway, I'm thinking of replacing it with one of these for about $40 from Wildwood:
http://www.wilwood.com/MasterCylinde...emno=260-10922
Anyone have the PN for the stock Ford valve, so I can see how much they are?
I'm assuming they are fairly expensive, but I haven't found one online, don't know what the part number is to search for.
Anyway, I'm thinking of replacing it with one of these for about $40 from Wildwood:
http://www.wilwood.com/MasterCylinde...emno=260-10922
Anyone have the PN for the stock Ford valve, so I can see how much they are?
Moderator
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
Looks to be a variation of a 2B547 (BRAKE LOAD SENSING PROPORTIONING VALVE) Sec 23 Pg 6
I need to know the year and model (looks to be 1985 F250 based on your Garage entry under your username in the top-left corner (I don't display sigs)) as well as:
- 2WD or 4WD
- GVWR
- Engine size
I need to know the year and model (looks to be 1985 F250 based on your Garage entry under your username in the top-left corner (I don't display sigs)) as well as:
- 2WD or 4WD
- GVWR
- Engine size
Thread Starter
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Laughing Gas
Joined: Sep 2012
Posts: 1,100
Likes: 6
From: Georgia
1985 F-250XL 4WD, 460, Ford 10.25" rear, Dana 44 TTB, 8,600 GVWR
The rear brakes lock up too easily.
I'm about to do a complete brake refurb from the MC to the rear. Once I do that I'll see if there's any change, but I want to have a solution in my back pocket, so to speak, in case there's no change in it's operation.
Moderator
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
Boy, this post is gonna be filled with bad news....
The Parts Catalog says it could be one of two:
E5TZ-2B547-F - Fits 1985/ F250 4WD with 6.9L or 7.5L engine with rear springs E3TZ-5560-T
E5TZ-2B547-C - Fits 1985/ F250 4WD with 6.9L or 7.5L engine with rear springs E3TZ-5560-M
Notice, those spring numbers are factory replacement spring numbers, not the numbers on the springs your truck came with.
I have absolutely no idea which rear springs you would need and likely neither do you.
To add to that, the parts catalog doesn't give complete spring information, so even if I had a code from your Certification Label I couldn't do anything with it.
More bad news.... for the -F variant, no dealers or NOS vendors have any.
I show two Ford dealers who each claim to have one of the -C variant (whether they could find it or not is anybody's guess):
Friesen Ford in Aurora, NE
XIT Ford Chrysler in Dalhart, TX
And the senator, while insisting he was not intoxicated, could not explain his nudity.
The Parts Catalog says it could be one of two:
E5TZ-2B547-F - Fits 1985/ F250 4WD with 6.9L or 7.5L engine with rear springs E3TZ-5560-T
E5TZ-2B547-C - Fits 1985/ F250 4WD with 6.9L or 7.5L engine with rear springs E3TZ-5560-M
Notice, those spring numbers are factory replacement spring numbers, not the numbers on the springs your truck came with.
I have absolutely no idea which rear springs you would need and likely neither do you.
To add to that, the parts catalog doesn't give complete spring information, so even if I had a code from your Certification Label I couldn't do anything with it.
More bad news.... for the -F variant, no dealers or NOS vendors have any.
I show two Ford dealers who each claim to have one of the -C variant (whether they could find it or not is anybody's guess):
Friesen Ford in Aurora, NE
XIT Ford Chrysler in Dalhart, TX
And the senator, while insisting he was not intoxicated, could not explain his nudity.
Thread Starter
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Laughing Gas
Joined: Sep 2012
Posts: 1,100
Likes: 6
From: Georgia
Well, it looks like the manually adjustable valve will be the route I take if I need one. I can't imagine 1 of only 2 available NOS valves being anywhere close to only $45.
Thanks much for the info.
Thanks much for the info.
Old School Hot Rodder
Joined: Feb 2006
Posts: 6,472
Likes: 11
From: Exmore, VA
The issue I see that you might run into would be having to adjust it for each different load condition. My truck will lock the rear wheels during a panic stop unloaded, always has.
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Laughing Gas
Joined: Sep 2012
Posts: 1,100
Likes: 6
From: Georgia
Yeah, I can see that as a possible issue, but I'm generally either very lightly loaded, or very heavily loaded.
Locking during a panic stop is one thing, but locking when the road is wet at a very light stop (or dry road with just a slightly more aggressive stop) isn't good.
Locking during a panic stop is one thing, but locking when the road is wet at a very light stop (or dry road with just a slightly more aggressive stop) isn't good.
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Thread Starter
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Laughing Gas
Joined: Sep 2012
Posts: 1,100
Likes: 6
From: Georgia
Looking for something else I came across this thread I started and never provided a result.
I took load proportioning valve apart, cleaned it up, painted it and lubed the moving parts with Never-Seez and it worked fine.
I took load proportioning valve apart, cleaned it up, painted it and lubed the moving parts with Never-Seez and it worked fine.
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