Finally extended my breathers

[crustyLC]

The nipple in the rear axle where the breather hose attaches is "loose". I can rotate it. Is this normal? Should this be a tight fit?
Great thread!
Thanks

 

[TRDdrew]

good write up, one of the first things I did to mine a few years back

 

[zipdoa]

Following up on this - the stock breathers are designed with 'one-way' caps pressure can be released, but fluid shouldn't be able to make its way in.

My breathers seized, causing the rear diff seal to blow out, so I replaced front and rear diff breathers. The tcase/trans appear to use a different part# for breather (so I believe I now have 2 extra breathers that are only good for front/rear diff).

Question - am I correct that the stock breathers should keep out fluid even if submerged? it appears pressure from the diff allows air to vent out, but the ball/cap/rod would seal if fluid tries to get in?

 

[OEMGUY0720]

Following up on this - the stock breathers are designed with 'one-way' caps pressure can be released, but fluid shouldn't be able to make its way in.

My breathers seized, causing the rear diff seal to blow out, so I replaced front and rear diff breathers. The tcase/trans appear to use a different part# for breather (so I believe I now have 2 extra breathers that are only good for front/rear diff).

Question - am I correct that the stock breathers should keep out fluid even if submerged? it appears pressure from the diff allows air to vent out, but the ball/cap/rod would seal if fluid tries to get in?

When my driver side rear axle seal started to weep gear oil, I checked that too but that wasn't the case for my 06Lx. But yes the factory 10-inch rear diff breather hose has a one-way valve cap to allow higher pressure from hot/warm gear oil to vent out but keep water from going in the differential. And if you are extending it (using a longer hose) all the way up to the highest part of the engine bay firewall I think it's safe to say to use a 2-way cap/filter head since it's already almost a meter high from the ground.

 

[Hugh Heifer]

Here is some anecdotal information. I have an old '85 Ford for hauling lumber and firewood etc. It started pushing 90W up through the speedo cable. I discovered the transfer case breather was totally clogged. I cleared it and it solved the messy problem. Similarly, the rear diff cover was leaking and I was perplexed as I had recently resealed it. Again it too had a major clog in the vent. I actually had to removed the vent tube and drill out the mess. The problem again was solved.

Lastly, I have heard that a hot case can actually actively pull water inside when submerged. While I do not know if that is true and I am not too familiar with hydrodynamics, it seems extended breathers for our most adventurous of trucks remains wise insurance to prevent continuous replacement of fluid.

 

[Joe422]

Yea... after more research, I pulled all the one way OE valves off the extended lines... and used these mini filters (mufflers).
Not sure how well it will filter, but it does flow both ways, and if they clog up, its pretty easy to clean.

Amazon product ASIN B083TC8JT2

 

[daohaus]

Subbed have to do this on mine

 

[OEMGUY0720]

Did mine this afternoon

Glad I did, as you can see the hose is split and front diff will no doubt ingest water if I was to wade in a river or flooded road. But, fair warning to those who are looking to get it done, the front diff is a huge PITA.

 

[TreatSmash]

Here is my contribution to this thread:

How-to guide for installing differential, transmission, and transfer case breathers on your 2006 100 Series Land Cruiser.

 

[OwnerCS]

Here is my contribution to this thread:

How-to guide for installing differential, transmission, and transfer case breathers on your 2006 100 Series Land Cruiser.

Nice job. I have been running that breather kit for about a year. I like it.