differential air vent

[Ed]

I'm getting ready to work on my diff and as I was looking at it I remembered that i've always had a problem with the fluids coming out of the vent. This is my second diff and i've always made certain to not overfill. Back when my car was running I would wash the diff every now and then with a high pressure hose to get the oil/crud off. Then after a couple of months it would be there again.

I noticed on my Chevy truck there is a two foot hose attached to the diff that goes up with the vent cap at the end of the hose.

Now I'm wondering do I just have a case of bad luck when it comes to my diff's leaking or is this a common problem?

And what do you guys think about putting a piece of hose to the top of the diff?

[ChrisA]

Hey Ed, gently pry the breather out of the rear cover and clean it out. In my generic differential manual it says that a clogged breather can actually cause oil leakage as the pressure builds up and forces oil out wherever it can past the breather. I know it sounds crazy but that's what the book says. I havent done this in awhile but I think the lower hole in the breather has to be positioned a certain way in the cover.

Much luck,

Chris

[Ed]

I got it out and blew through it. It seemed pretty clean to me. No obstructions of any kind. I don't know what it is. Does anyone else's leak?

[panchovisa]

Ed, I just threaded the back cover ind installed aeroquip fittings and hose to a catch can (puke can). All my breathers and overflow goes to the same catch can.

You could easily just slip a hose and a band clamp over the plastic pipe (take the cap off first) and run the hose to any location (with, or without a container). A low cost container could even just be a beer can (drink the beer first!).