cruiser54 Posted June 24, 2014 Share Posted June 24, 2014 I removed this functional load sensing valve from my 90 MJ. Rust free Arizona part but I still cleaned it up and then painted it cuz Hornbrod made fun of my first photo... Valve only is $30. Will fit all MJs regardless of rear axle. Valve with 2 brackets and rod which isn't the greatest but works, all for a Dana 44 rear axle, is $45. Add shipping via FedEx for 4 pounds from 86305. Original before: Image Not Found After paint job: Link to comment Share on other sites More sharing options...
lil_loco Posted June 26, 2014 Share Posted June 26, 2014 Educate me on the benefits of this please Link to comment Share on other sites More sharing options...
cruiser54 Posted June 26, 2014 Author Share Posted June 26, 2014 Educate me on the benefits of this please None as far as I'm concerned. I removed it from my truck. Some people like to keep their trucks original. Link to comment Share on other sites More sharing options...
lil_loco Posted June 26, 2014 Share Posted June 26, 2014 So benefit is just to sit pretty? ;) Thanks Link to comment Share on other sites More sharing options...
cruiser54 Posted June 26, 2014 Author Share Posted June 26, 2014 So benefit is just to sit pretty? ;) Thanks Having removed it and re-routed my brake lines, I'd have to say my braking has never been better. Link to comment Share on other sites More sharing options...
Keyav8r Posted June 27, 2014 Share Posted June 27, 2014 lil_loco - it's a load sensing rear brake proportioning valve. The purpose is to shift more of the braking load to the rear brakes as the load in the bed is increased. Some folks swear by them and some swear at them. I still have them on both of my trucks but haven't driven either with a significant load in the bed to say if they actually work or not. While concern has been spoken by some about having a 20 plus year old part in the system that has a potential to fail under hard braking, others say their's work well. Hornbrod did a good writeup on making and installing a new adjusting rod and the adjustment procedure to fine tune the proportioning. That's one of the things on my MJ "to do" list Link to comment Share on other sites More sharing options...
COMJNUT Posted June 28, 2014 Share Posted June 28, 2014 I actually have my load sensing valve disconnected from my axle because I don't have the connecting rod, but still use it when I know I will be carrying a heavy load by flipping it in the up position instead of the down position. I notice a definate difference between the up and down positions in the effectiveness of the rear brakes. When it is in the up position and have no load, the rear brakes lock up before the fronts and can cause a vehicle to loose control. Link to comment Share on other sites More sharing options...
cruiser54 Posted June 28, 2014 Author Share Posted June 28, 2014 I actually have my load sensing valve disconnected from my axle because I don't have the connecting rod, but still use it when I know I will be carrying a heavy load by flipping it in the up position instead of the down position. I notice a definate difference between the up and down positions in the effectiveness of the rear brakes. When it is in the up position and have no load, the rear brakes lock up before the fronts and can cause a vehicle to loose control. I used to experience that also under the same conditions. Now, with it gone, the brakes work great. Link to comment Share on other sites More sharing options...
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