what r those vacuum lines are for?

[comanche12]

while I was work on passenger brake line few days ago, i notice that vacuum line(tan or white,green and yellow) r jammed in LCA bracket so I pulled it out and its not even plug in.

 

I'm sure its for climate control vacuum system but where should it plug at? :hmm:

 

and this blue line been blocked with a screw in it while i was work on blower motor before work on brake line

 

 

edit: ignore the blue WIRE its vacuum hose next the wire though

[juan]

Those are for your front axel CAD. (central axel disconnect) Your front dana 30 has a two shaft design in the passenger side that disconnect the outer shaft from the inner shaft. It works with vaccum and when connected and working is what gives you four wheel drive.

[jimmy21669]

Those are for your front axel CAD. (central axel disconnect) Your front dana 30 has a two shaft design in the passenger side that disconnect the outer shaft from the inner shaft. It works with vaccum and when connected and working is what gives you four wheel drive.

 

 

Unless your front axle was replaced with a non-CAD axle.

[comanche12]

ah thanks so i would just leave like that since i got axle swapped with non cad? (79 bronco hp d44)