Rubicon Air pump schematic

[Elsifer]

Anyone have a Service Manual for the 03 to 04 Rubi's?
I am looking for some schematic's on the air system for the lockers.

Basically, my front pump has a broken plastic nipple for the line to the front diff.

Looking at all the plumbing underneath I can basically come up with this (Very basic, yet fugly) schematic:

(Rear Pump)------------------------------->(Rear Diff)
                                |
                                |
(Front Pump)------
                       \_______________>(Front Diff)



What the heck is that "balancing" line, or vent or whatever from the rear locker feed to the front pump body for? Is there a check valve in there? Is it for the front locker needing less pressure to activate and then discharging its pressure to the rear when disengaged?


Anyone with a service manual please enlighten me.

[BrokenAxle]

i'm not 100% sure, but i think it is so that the rear locker has to be engaged so that the front locker will engage.

can anyone confirm?

[calltrex]

that makes sense..