Rear Axle Vent Line...

[Desert Rat]

So umm....is it needed?

Let's put it this way, before I had my Blazer, I had a 90 Bronco. When I first lifted it to 4 inches with 33's, I had the stock vent setup for the rear diff. It was the stock hose that ran from the diff up to the underside of the body with one of those little cap type covers on the end of the tube. On one wheeling trip we did several river crossings. These weren't over the hood type radical crossings, just maybe up to the axles high. On the way home, I looked through my rear view mirror and saw a bunch of brown gunk all over my back window. I pulled over and my rear diff was steaming. I had sucked a ton of water in through the vent tube and now it was boiling out. There wasn't any leaks in the hose, and the connection to the diff was tight. I'm guessing a few times the end dunked under the water, or there was enough splashing going on to send a stream down the tube.

Moral of the story, even with the stock setup and mild wheeling, you can still suck water into your diff if you aren't careful. So I may have gone overkill, but I won't have to worry about it now.

 

[Ben B.]

Well I'm still lost.

Does this tube usually connect to my rear end? Should it be reconnected or just stuck somewhere high?

 

[Kyle Strong]

reconnect the hose or else water can get in and mix with your fluid and things will go boom

 

[Desert Rat]

Yes, there should be a small metal tube sticking out of the top of your diff. A hose attaches to that tube with a clamp. The hose should run as high as you can get it with something on the end to keep the water out, like a fuel filter or the like. Usually the tube is brass and threaded into the diff. Sometimes it gets painted, or just dirty so it is dark colored.

 

[chevyfumes]

If you believe in God, now would be a good time to thank him for directing you here instead of pirate....

 

[mostwanted]

Yes, there should be a small metal tube sticking out of the top of your diff. A hose attaches to that tube with a clamp. The hose should run as high as you can get it with something on the end to keep the water out, like a fuel filter or the like. Usually the tube is brass and threaded into the diff. Sometimes it gets painted, or just dirty so it is dark colored.

Where did you get that diff cover?

 

[chevyfumes]

Where did you get that diff cover?

With no question aboot the rest of the assembly??? So ,you a believer in God too???

 

[Desert Rat]

Crane High Clearance. (http://www.cranecommerce.com/catalog/index.php) Have it on the Corp14ff too.

 

[Clod_King]

Nice truck man! The Axles/leafs look really nice all clean, and not beat up. hahaha

 

[Desert Rat]

It is still a work in progress. It is in the shop now getting a roll cage. Then I Line-X the entire interior. I did take it out twice this year, even with the gutted interior, because I couldn't stand it any longer. The first pic is during the 45 gallon gas tank install over a year ago. The second pic is about 8 mos. old. You will notice no rear driveshaft and the factory sticker markings on the tire tread still. I did the front and rear axles and diff covers in POR-15. Even after wheeling, they clean up nice.

 

[Slapperbar]

Well I'm still lost.

Does this tube usually connect to my rear end? Should it be reconnected or just stuck somewhere high?

You should DEFINITELY stay away from Pirate.

 

[Slapperbar]

One end to the diff and the other to some place really high under the truck allowing for FULL droop of the suspension.

 

[Desert Rat]

Exactly, make sure both your rear brake line, and the diff vent, have a nice C shape to them so when you droop, they don't snap.