86 MJ brake lines altered

Stephen, I've got an 88 long bed and I would suggest you find that load adjusting valve pretty quick. I forgot to hook the lever up when I did the first diff change and the rear end locked up almost instantly when I hit the brake. With it in place, I CAN lock the rear brakes, but only by putting my full weight on the pedal and darned near rupturing myself pushing - but by then the fronts are locked as well. Don't know where you would find one except at a boneyard, but then I haven't check the parts dept for it either. Bet it's not cheap.

Thanks for the replies.

I did not mention in the first post that there are also air shocks on the rear. Wouldn't this fool a working height sensing valve? I don't know in what order these changes were made. I had broken spring leafs replaced 2 on right 1 on left and a rusted out shackle on the left.

Bill, I don't think that this one ever had abs.

Will, The old height sensing valve is still on the vehicle but the link to the diff is gone. Everything is very rusty under there. The old brake lines just under the proportioning valve (located directly under the master cylinder are still there, but have been cut away and new lines installed. I have not completely followed the new routing, but one of the outlets from the proportioning valve is not being used. The one directly on the bottom of the valve.

Since the early 70's Jeep has been putting in a proportioning valve in all and the load weight (height) sensing valve in some Jeeps to prevent rear wheel lock up.

If the rear wheels lock when you are not expecting it, you can do 360's faster than you can blink.

I personally would get that valve back into the system or add a few sand bags to the box to give it some weight so the wheels don't lock as easy.

Mike

"Stephen R. C>