Need help with brakes, rear disc conversion

[1989 comanche mj]

I put a explorer rear axle  in my 92 Comanche, and have some issues with the rear brakes.  Currently there are 2 brake lines running back there,  They meet in a 3 way T right above the axle with one  line running down to the axle.  I am guessing at some point a previous owner tossed the rear level valve.  I tried plugging the line coming out of the front of the proportioning valve and attaching the single rear line to the rear axle, but did not get any fluid flow, and the pedal was hard as a rock.

 

The brakes worked fine before all this, it had a dana with drum brakes.  For now I have it back to the way it was, rear t line going to axle, but I don't like this setup.  I am getting fluid flow.  I haven't driven it, still working on exhaust and floors.

 

My original plan was to get rid of the line running off the front of the proportioning valve by plugging it,  and put the Jegs adjustable in line proportioning valve in the back so I could adjust the flow for loads and get it dialed in right.

 

I do have a 4 wheel disc prop valve from a 98 zj but when I tried to swap it in I realized some of my brake lines are frozen and will strip if I try to back them out.

[1989 comanche mj]

h

[Tj1]

When i ran my new hard lines with eliminating the factory prop valve, i plugged the hole at the distribution block with a bolt with matching threads. I also added a jegs prop valve in the cab so i can adjust on the fly. One hard line to the rear and a T on the axle.

 

With your pedal being solid are the rears locked up?