So I stopped at the gas station and looked around my truck while fueling up and saw this hose hanging down from the rear axle. It looks like the bracket broke from where it is held, but I can figure out where it goes and I am hoping for some guidance. Does anyone know where this hose goes? I think that it is the air vent for the axle but I'm not sure. Any help would be great.

 

Same thing happened to me. I think its a differential vent thing. Just clip it up somewhere..

 

Looks like a brake line to me.....

 

its ain airvent for your rear diff. grab some zip ties and climb up there and put it out of the way

 

yes its a vent, mine is ziptied up with the end plugged.

 

You don't want it plugged. The little cap on the end is designed to let pressure out, but, not let water in..... It usually works..... If it is plugged solid, pressure builds in the differential, and blows seals......

 

no its not plugged solid.....it has the yellowish plastic cap on it....i never put it there, bought it like that, and later found out what it was....didnt know the cap worked like that....learn something new everyday

 

Cool.

Thats one of those things that the factory does 'good enough'.... but, if you do deep water at all, extending the hose up into the engine compartment somewhere isn't such a bad plan at all. Higher up the better.

 

tell me about it, thats how my tranny took on water.........

 

Yep, there is a vent on top of the trans as well. that one is just open to atmosphere.... great plan.... NOT.

On my last 4x4, I tied the rear axle vent, tranny vent, front axle vent, and T-case vent, all into the same line, ran it up into the cowl, where the HVAC inlet ducting is, and put the neat little cap on the end there. I could drive thru water that lapped up on the hood, and everything would stay nice and clean.... well, on the inside at least....... just had to keep the 'bow wave' going, so I didn't drown the engine. the snorkel came later.... but, never was necessary, I tried to stay out of water that made that kind of thing necessary...... Tried......