Is there a hose diagram for the four wheel drive? My hoses are dry rotted at the hubs so I was wondering if there are more somewhere that I have to change

 

only rubber is from the frame to the hub itself. The line from the frame up to the pump is a hard plastic airline, just go to the parts store and buy new vacuum line and replace the two pieces from the frame fitting to the hub nipple. And make sure to remove the hub fitting and clean it out Ive fixed alot of these fords because the nipple gets clogged with pieces of rubber from the dry rotted hoses

 

Hmm thanks scaler I wouldn't have thought of that thanks..any chance you know the size of the line?