Proportioning Valve - Can i take off that valve thing?

Here's what you do. Since the valve takes the greater pressure from the front brake circut and over-powers the weaker rear circut, just cap the line at the tee. The tee is located on the pass side front on the frame about where the firewall comes down. It's a 1/4 or 1/8" npt plug is all you need.  You can then just trace the now unused brake line back to the valve and remove all of it. It cleans the rear up quite nice IMO.  When the truck is unloaded, the valve closes off the higher pressures of the front brake circut. Only using the low press circut off the master cyl. When there is a larger load (bricks, fridge, illegals) the rear tires can accept more braking force without locking up. Since most of us dont put heavy loads in the beds anymore, you dont have to fell bad about taking it off. Hope this help anyone....

I just ran all new brake lines on my truck a few weeks ago...I re-used the proportiong valve and re-located it on to the rail under the cab...as for the rod that goes to the axle, I cut it off so that its only about 1 1/2 long...works well so far.... that way if I need more rear brakes for any reason, I just push the rod up a bit....lots of people just "T" it off and have no complaints but like I said, I was running all new lines so I could do what ever I wanted

--------------------------------------------- Originally posted by dajizzsocal Here's what you do. Since the valve takes the greater pressure from the front brake circut and over-powers the weaker rear circut, just cap the line at the tee. The tee is located on the pass side front on the frame about where the firewall comes down. It's a 1/4 or 1/8" npt plug is all you need.  You can then just trace the now unused brake line back to the valve and remove all of it. It cleans the rear up quite nice IMO.   When the truck is unloaded, the valve closes off the higher pressures of the front brake circut. Only using the low press circut off the master cyl. When there is a larger load (bricks, fridge, illegals) the rear tires can accept more braking force without locking up. Since most of us dont put heavy loads in the beds anymore, you dont have to fell bad about taking it off.   Hope this help anyone.... --------------------------------------------- he is right, its just a load sensing valve, it applys more rear brake when the truck is loaded down, hince the rod that goes to the axle, when the truck squats it pushes that rod up and applys more brake. you can throw it away and do exactly what he said and everything works like its supposed to. ive never had a problem doing that way. 

The valve you are referring to in the rear is to apply more brake pressure in the rear when it is loaded down. There is still a proportioning valve up front.The one in the rear has a load sensor and as the rear suspension is compressed in the rear it sends more brake pressure to the rear. If you keep it in there every time you ride low in he rear it will think the truck is loaded down and put more pressure on the rear brakes. Take it out and tee it and forget about it.

Edited: 8/5/2009 11:31:11 PM by smcprez

---------------------------------------------Originally posted by stockfloored93---------------------------------------------Originally posted by dajizzsocalHere's what you do. Since the valve takes the greater pressure from the front brake circut and over-powers the weaker rear circut, just cap the line at the tee. The tee is located on the pass side front on the frame about where the firewall comes down. It's a 1/4 or 1/8" npt plug is all you need.  You can then just trace the now unused brake line back to the valve and remove all of it. It cleans the rear up quite nice IMO.  When the truck is unloaded, the valve closes off the higher pressures of the front brake circut. Only using the low press circut off the master cyl. When there is a larger load (bricks, fridge, illegals) the rear tires can accept more braking force without locking up. Since most of us dont put heavy loads in the beds anymore, you dont have to fell bad about taking it off. Hope this help anyone....---------------------------------------------Good tip...Ive done this mod as well as using the t fitten & both work fine for me!

im getting mixed opiniions on this one. if i just T it off it should work the same right? since its a load bearing sensor with no real load in the truck the T should work just fine

JUST DRAG TO A STOP lol

--------------------------------------------- Originally posted by yota4life im getting mixed opiniions on this one. if i just T it off it should work the same right? since its a load bearing sensor with no real load in the truck the T should work just fine --------------------------------------------- NO, if you just tee it off you will have equal braking force front and rear, which will cause the rear to lock up on hard braking. there are two lines going into it, one high pressure and one low pressure, if you just tee them you get the high pressure all the time. the way the load valve works, is it uses the high pressure side from the front brakes to ad more braking force for the rear when needed. the objective is to get rid of the high pressure so you only have the low pressure. thats why you remove the line that is directly connected to the front brakes, and keep the one from the master cylinder.

So mechanically speaking it only senses weight in the back. So if i just disconnect the whole thing , lower my rear and never haul any thing heavy im fine? RIGHT? By the way i have a 93 2 door shortbed.

---------------------------------------------Originally posted by stockfloored93---------------------------------------------Originally posted by yota4lifeim getting mixed opiniions on this one. if i just T it off it should work the same right? since its a load bearing sensor with no real load in the truck the T should work just fine---------------------------------------------NO, if you just tee it off you will have equal braking force front and rear, which will cause the rear to lock up on hard braking. there are two lines going into it, one high pressure and one low pressure, if you just tee them you get the high pressure all the time. the way the load valve works, is it uses the high pressure side from the front brakes to ad more braking force for the rear when needed. the objective is to get rid of the high pressure so you only have the low pressure. thats why you remove the line that is directly connected to the front brakes, and keep the one from the master cylinder. ---------------------------------------------so your saying if i disconnect the one from the front brakes and just leave the low pressure one on itll be fine?