M1088 air/elect. system question.

[Floridianson]

My system has two of the Burkert air solenoids under the dash. The one for the cooling fan is working #34 and the other is just exhausting air. I thought the second one was for the diff. lock but I don't know as it is not closing when I put the Transmission in mode. So any help with what that solenoid does or has the wiring diagram it is on wire number 50 next to number 34. Tanks

 

[Suprman]

Is air blowing out of it into the cab?

 

[Suprman]

The second one is diff lock. Looked in the parts TM. Its shown right past the power panel and relay section. Dosnt say much though.