Thread: Breathers... on everything?

Something caught my eye in a thread I can (funnily enough) no longer find.

I was searching for something unrelated, and I came across an image of a blue polythene airline attached to a brass fitting in the top of a swivel housing.

It seemed quite obvious at the time, btu then I thought to myself: Why would they have done that?

So, as we probably know, the diffs already have a breather, and it should be OK for most fjording applications.
Some others have suggested positive pressure to additional areas, such as the distributor, torque converter housing / gearbox as well.
But swivel housings? That one had me a little skeptical.

Notice I'm not questioning whether or not it is beneficial. There is obviously a reason for the person who owns(ed) the vehicle in the pic I saw.

My guess is that the swivel in that particular application is either running in an isolated oil bath or one shot, and remains sealed from the diff housing. Whether or not the wheel bearings are running in the same fluid or their own grease and double sealed is not something that could be obviously determined from the pic.

So the questions to those who have done breather mods, are as follows:

1. Where have you fitted additional breather fittings and lines

2. What type of fittings did you use? (better yet, where did you obtain them)

3. Do you have any positive pressure airflow to those breathers or are they simply equalizing to atmosphere?

4. What was the specific purpose for performing the modification? was it to remediate an already dysfunctional setup, a failure of a component (water / mud ingress?) or is it simply a case of wanting to perform it as preventative maintenance or for future use?


I would be interested to hear your responses. Thanks in advance.

You might find that it was a "wading plug" that was inadvertantly left in place at some time.

Cheers Rod

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