Oh boy. Think I broke it. Forgot I had it in 4H and took off down the road. Sounded like it popped out with a loud whinning sound. Now it doesn't engage. Anyone know what I broke?

 

Update...Seems like the vacume lines are good. Replaced the vacume switch on the transfer case and no dice. Took off the actuator and engaged manually and all wheels are spinning when i turn them. So maybe actuator is bad or sticking? I've read that this part is no longer available so I might have to snag the diaphram out of a different one and rebuild it. Does anyone know if I might be overlooking something? Thx.