It should have a tube like the axles do, only I don't know for sure that it actually came with one.
If it has the little floating cap, you can remove it & use some hose barbs with the same size thread. (NPT) or National Pipe Thread.
It's prolly 1/8"NPT, Use a 3/16" hose/tube & run it to a tee (hose barb tee) that also connects to the transfer case breather tube.
From there, it should lead to a high spot on the engine side of the firewall.
At this point, you can use another barb & a 1/8" NPT female coupler to re-connect the little breather with the floating cap.
These components will go from hot to cold when you submerge them in water.
Without breathers, the air inside them cools & the vacuum created from that, will suck the water past the seals of the shafts that pass through their cases.
Originally Posted by 5point1
Well after I drained the oil, I ran water through the engine to clean out the gunk. (the guy who owned before me obvioulsy didn't know how to maintain the engine).