Pictures of Transfer case and transmission breather locations!!!
now for the rear, I will show it and then the tranny/trans. BTW, when taking off the tranny hose is easy, putting the new one on is a pain and do not try this while ur jeep is still warm as you will carry scars for the rest of your life cuz you put your arm where one half is against the exhaust pipe, the other against the top of the tranny! when you pull it off, keep a finger there as a reference point, then pull your new hose up there and slip it on good, make sure it is a good seal! but first rear diff pic,

then, how I ran the rear diff and tranny trans back over the rear axle, being sure to keep it away from moving parts, but still giving it flex,

then, how I ran the rear diff and tranny trans back over the rear axle, being sure to keep it away from moving parts, but still giving it flex,
now for looking down see how I routed the hose to the transfer case, and then the next two pics are how i ran them up through the drain hole in the bottom of the rear storage compartment, you have to run the hose on top of the heat shield and it takes some trial and error to hit the hole and pull it through, works best with a friend so you don't have to keep getting up and down


btw, right before running it under the heat shield, there is a great place to give the hose some extra support by running it through the hole in the rear crossmember and out the top.


btw, right before running it under the heat shield, there is a great place to give the hose some extra support by running it through the hole in the rear crossmember and out the top.
come up through the drain hole in the storage box in rear... and then run them under teh carpets, to both of the roll cages with the breather cap still on to keep out trash, I am only showing one side but I ran rear diff up one side, and tranny up the other, it took 20ft. of hose for the rear and the tranny, run the tranny first, then cut off the excess and it will be more than enough for the rear diff, the front took about 6 ft.


Nice work. Keep in mind if your Jeep falls over on its side out on the trail you might end up with gear oil in your interior, adding insult to injury. The roll bar may contain this somewhat, I suppose. I'll be giving that a look. Thanks for the idea.
Lol yup, I wheel with the carpet out so if I roll, some gear oil on the plastic seats will be the least of my worries! but point taken.
The mid-90's Camel Trophy Discovery's had the vent tubes running up alongside the snorkel, terminating in a small air filter if I remember correctly. It would be interesting to see if anyone has adopted a similar approach here.
It would be easy enough to do, once you get the lines out from under the jeep where you have to worry about moving parts and flex, then it is just a matter of having enough hose to go where you want. Remember that this just raises your breathers to give you some extra "breathing room," don't try to go as high as these breathers as you will encounter a lot bigger problems than having to replace your trans fluid!
Electricity and water do not mix well.
Electricity and water do not mix well.
Nice easy project. Thanks for the tips. I was not able to find the termination point on the firewall, but simply cut the line at a convenient spot where it lays across the top of the transfer case and transmission. Here's a photo that may help you find the t-case hose, but if you reach up on top of the case you should be able to feel for it and pull out enough slack to cut. I spliced in a new section of hose and ran it high on the firewall. Keeping the rear diff line inside the rear tail cavity, all three lines (front diff, rear diff and t-case) are all about 46" off the ground with my 2.5" RC lift and stock tires. Hope these extra photos help.
Routing in rear:


New front line:

Factory hose on top of transfer case/transmission:

End point for new front and t-case lines (still need one cap since I cut the old hose and left the remnants behind for now):
Routing in rear:
New front line:
Factory hose on top of transfer case/transmission:
End point for new front and t-case lines (still need one cap since I cut the old hose and left the remnants behind for now):
I bought 25' of hose and re-ran all 4 breathers. None of them were clamped down. Very bad. Anywho. My rear diff is in the passangers side tailight area zip tied to a wireing harness that runs into the cab. My front is zip tied up to the wiring harness that runs along the top of the fire wall. My Transmission and transfer case breathers are replaced and run up along the battery compartment and are also zip tied to the wireing harness at the top of the fire wall. Someone metioned that the breathers close when they get wet. I don't think so. I popped off the little plastic cap on the top. I could see right through. No mechanical valve on mine. Just your standard issue breather vent. Also, all of my new breathers have a half loop at the top(like an upside down U) with the breather vents pointing down. This way the stuff has to go up.. .then down into the tubes. Ok.. so maybe i'm a little paranoid about water getting in anywhere.
Got water in my airbox.... but none in the breathers.
Got water in my airbox.... but none in the breathers.
I bought 25' of hose and re-ran all 4 breathers. None of them were clamped down. Very bad. Anywho. My rear diff is in the passangers side tailight area zip tied to a wireing harness that runs into the cab. My front is zip tied up to the wiring harness that runs along the top of the fire wall. My Transmission and transfer case breathers are replaced and run up along the battery compartment and are also zip tied to the wireing harness at the top of the fire wall. Someone metioned that the breathers close when they get wet. I don't think so. I popped off the little plastic cap on the top. I could see right through. No mechanical valve on mine. Just your standard issue breather vent. Also, all of my new breathers have a half loop at the top(like an upside down U) with the breather vents pointing down. This way the stuff has to go up.. .then down into the tubes. Ok.. so maybe i'm a little paranoid about water getting in anywhere.
Got water in my airbox.... but none in the breathers.

Got water in my airbox.... but none in the breathers.
I can't see your image, but wait, did you say you found 4 breathers? I thought there was only 1 for the transfercase/transmission, but if the transmission has another breather, where is it? I can't find it.


