Where does the vacuum line from the actuator under the battery go to. I can only find diagrams of the 4 button. I know it is on here somewhere but for the life of me I cannot find the 3 button diagram. Damn thing popped off and cannot find where it goes!

I appreciate any and all help! Its 110 out with humidity and i am having a brain fart.

Thanks!

 

It runs from the front axle actuator back to the transfer case switch on the top of the transfer case. It is mounted on a plastic three nipple connector that is keyed and then is pressed on the switch.

Bill

 

Thanks! Will it just slide back on the nipple? It also looks like it has some kind of check valve or maybe its a splice. Replaced the top lines before when 4x4 did not work and a/c would not switch to defrost. I am going to replace the whole line looks like its a dry rotted mess. Have to wait for a cool day still pushing over a hundred with humidity.

 

Based on your mileage and other issues with the vacuum system that the S Series platforms have, you also might consider replacing the transfer case switch as well when you do the hoses. I would also replace the one way valve as well as the front axle actuator.

If tranny fluid infects the vacuum system, it will tear up the switch, valve , front axle actuator diaphragm , as well as the vacuum lines.
And yes, the hoses just slide onto the nipples of the transfer case switch. That connector is keyed so make sure when you reattach that nipple connector it mates up perfectly with the transfer case nipples or you will have 4wd issues.

Bill