Im going to be replacing my front axle vacuum actuator because i keep getting atf in there there due to the transfer case switch leaking but before i replace either one is there a way i can run sea foam with the truck in 4wd and putting it down the vacuum line to the actuator to clean out that line then put in the new switch and actuator?

 

Just take the line loose at both ends and flush it however you see fit. You definitely need to get that ATF out of there. Hopefully it hasn't worked its way into the HVAC system yet.

 

How would you recommend flushing it? I pulled my old actuator and found atf fluid in it at the rip and put a new actuator in and a few days later after using the 4wd on the beach and going to go get my friends truck out it already has a rip in the new one and it has some fluid in it also and its shot. Im going to replace the switch and clean out the lines then put another new actuator in and hoping that it solved the problems

 

Air compressor & some degreaser.

 

Replace the line. It just ain't that expensive. Just make sure you get the correct size. It's either 7/64 or 9/64 not 3/16 or 1/4. You shouldn't have ATF in the line. I think those switches are sealed. I'd put a new switch in too or at least pull yours and check it out.

 

True dident even think of that. Will deff do! Thank you!

 

Well i ended up getting another switch, Blew the line out, Used purple power and blew out a lot of fluid with the compressor and then ran water through it to clean it out and then let it run with air pushing through it for about 10 mins to completely clean it out. Then got a switch which was opened and has no rubber seal but tried it anyway and it wouldn't work. The ball on the bottom wouldn't push open at all even by hand so i returned it and got another one and all truck works great now. I hope this fixes my fluid problems in the lines, Im pretty sure if I was reading right that the seals go bad in the switch. Any insite Kyle?

 

Two problems typically have to occur for fluid to get into the system. #1, a failed seal on the switch. #2, a failed input seal on the transfer case.

If the seal failed on the front of the t-case, then the transmission will push fluid into the t-case, causing an over full condition. Pull the fill plug off the back of the t-case. If fluid pours out, you should drop the t-case and replace the input seal.

 

Well i checked it out that front seal is deff shot. I ended up getting a new one and took out my new tcase switch and put my old one in and plugged off the lines so i dont get fluid to the new actuator and destroy the new switch until i do the seal. Thank you for your help

 

If t-case front seal is shot keep an eye on the tranny fluid. There is no rear seal in the back of the tranny. You really need to fix this.