Proportioning Valve (LSPV) (1 Viewer)

[SR.GRINGO]

I know this has been beaten to death.....just double checking my conclusion from the reading. I just installed the 850,863,N73,N74E heavy lift with castors, steering stab., and 2 trim packers per spring. Now I plan on turning the nut on the proportioning valve about two turns up or a quarter inch upwards.... the front winch bumper and the tires will be put on in Jan or Feb.

so to rehash two turns or a quarter inch upwards with a 14mm?

 

[Riley]

I don't think the threaded shaft adjustment gives enough compensation. You need to move the bracket. I can't remember if it's 1/4 inch but that sounds right. Remember to mark (scribe a line) first on the frame as a reference point. Beowulf had some good advice on past threads.

 

[Beowulf]

SR.Gringo,

You want to move the LSPV bracket mounted to the frame. The distance you move it depends on how much "additional" lift you have over stock.

The 1/4" downward movement will compensate for a +3" lift over stock. You need to do your own calculation based on this information. I believe the ratio is 16:1 when you move it at the bracket but you should do research before counting on this ratio. Your measurement is just for the increase in the rear.

My advice is to be sure you get a good look at the LSPV bracket before you start marking and moving it. I did it in the dark with little light and found that the mark that I made was on 2 parts of the same bracket and not on the frame. I lost my reference point and had to guess. First time guess was wrong and the rear pads wore out very quickly (~15k miles.)

Rich posted a source for the proper brake pressure guages if you are interested in doing the adjustment the right way.

-B-

 

[SR.GRINGO]

SR.Gringo,

You want to move the LSPV bracket mounted to the frame. The distance you move it depends on how much "additional" lift you have over stock.

The 1/4" downward movement will compensate for a +3" lift over stock. You need to do your own calculation based on this information. I believe the ratio is 16:1 when you move it at the bracket but you should do research before counting on this ratio. Your measurement is just for the increase in the rear.

My advice is to be sure you get a good look at the LSPV bracket before you start marking and moving it. I did it in the dark with little light and found that the mark that I made was on 2 parts of the same bracket and not on the frame. I lost my reference point and had to guess. First time guess was wrong and the rear pads wore out very quickly (~15k miles.)

Rich posted a source for the proper brake pressure guages if you are interested in doing the adjustment the right way.

-B-

Beowulf,

Thanks for the instructions....I will mark it on the frame and try your way first. The lfft is crazy high right now but it will settle especially when I get the new bumpers installed in a few months.

Jason