4x4 wont engage

[95ramboy]

I need help with my four wheel drive I don't know whats wrong.
my 4x4 wont engage when I shift to 4 hi and the light will not come on also.

I've tried to check the red and black lines that go to the actuator. I get vacuum in the black line when its in 4 hi but no vacuum when its in 2wd. could this be my switch at the transfer case?

I don't get vacuum at the actuator also. I pulled the lines off where they connect to the metal tubing that goes to the cad. could this mean bad tubing?

 

[jf5.9]

Only one of the lines should have vacuum when you are in 2wd. When you are in 4wd the other line should have the vacuum. Sounds like it might be worthwhile to at least unbolt the CAD and see whats up. I went over a tree branch in the Median of 80/90 last winter and ripped out the vacuum lines. $160 later I was pulled out of the bottom of the median. I hated my 4WD for that.

 

[95ramboy]

thanks for the replies