So I went to use 4x4 and noticed the front pass wheel grinding when I would give it gas hard. So I took the wheel off and in 2 wheel it free spins but in 4 wheel it clicks as if half engaged. I have a solenoid on order for the line that releases vac at that wheel. My question is do I have to remove the rotor and brakes to gain access where that line goes into the actuator?? I can not see where it ends

Also I could not get the hose seperate from the solenoid is it all one piece. Ford dealer says it is not but I had no way to fully release vac as I could not get solenoid apart from hose. Thanks