Proportioning valve issue

[the_mechanic]

I am having an issue with my proportioning valve. I have searched and had no luck finding any mention of this anywhere. I recently added rear discs to my XJ and did the 'ZJ guts' swap. Everything was fine and dandy until I went to start bleeding the brakes. As soon as I stepped on the pedal to 'fill' my new calipers, the rubber cap on the end popped off and brake fluid came shooting out of the cap in the end. When I attempt to bleed the brakes using a vacuum bleeder, I get almost nothing out of all four corner.

Any ideas?

 

[cruiser54]

Cap flew off of what?

 

[the_mechanic]

The rubber cap came off of the nipple at the front of the proportioning valve, which is where brake fluid is now coming out of whenever I step on the pedal.

 

[cruiser54]

double check your work performed when changing the guts.. Still have your old pieces?

 

[the_mechanic]

I thought I had my old pieces but can't find them. Went to the JY today for a few other things and pulled apart a few other PV's and they are all the same. I even grabbed a new set of ZJ guts and have the same problem...I am stumped.

 

[cruiser54]

Cross threaded?