Toyota rear axle vent caps

[ntsqd]

I've long speculated that putting the axles under a slight positive pressure would be the most ideal arrangement. The mechanism to do that is more complex than it is worth. I'll keep my baffled breather under the hood.

 

[cruiseroutfit]

I've long speculated that putting the axles under a slight positive pressure would be the most ideal arrangement. The mechanism to do that is more complex than it is worth. I'll keep my baffled breather under the hood.

That would be neat, I want to say there was actually a heavy duty vehicle manufacture that incorporated something into their OE equipment? Ring a bell?

Fwiw the 'creeper' breathers are the same as can be found at a Polaris dealer. They became all the craze in the rock crawling as rules dictated a closed system to prevent leakage in a roll-over.

 

[Asha'man]

That would be neat, I want to say there was actually a heavy duty vehicle manufacture that incorporated something into their OE equipment? Ring a bell?

Portal axles in Unimogs had a pressurized system for water crossings. Not sure if all of them had it or if it was optional, but it definitely exists.

 

[cruiseroutfit]

Portal axles in Unimogs had a pressurized system for water crossings. Not sure if all of them had it or if it was optional, but it definitely exists.

Very cool

 

[Sangster]

another cheap solution similar to the creeper breather is a heavy duty balloon clamped to the end of a breather tube. It's sealed, so no moisture/dust/etc can get it, yet it can expand/contract with positive pressure or vacuum.

I went with a cheap 2-way lawnmower fuel filter behind my brake light housing on the end of a hose connected to the axle vent.

 

[Redline]

inline gas filters

I do the same, have for years, but I also see little water.

For my last rig and current rig, I've simply extended the diff breather up into the engine bay and used a simple $5 fuel filter at the end of the hose to prevent contaminants from entering the diff (think dust, dirt, mud, water etc...). Both rigs had ARB lockers installed. I've never seen evidence of moisture ingress due to air moisture when changing diff fluid.

snip.........


My gut feel, you won't have an issue with moisture laden air entering your diff.

Cheers,
P

 

[Scenic WonderRunner]

I've had no problem. And I put the original Toyota breather cap on top of my extended breather hose line....way up into my gas filler area.

No Problems.

See post #67.....

http://www.expeditionportal.com/forum/showthread.php?t=287&highlight=water+crossing&page=7

.

 

[Silver dude]

Installed a industrial breather filter on mine. Works well, is cheap and doesn't take up a whole lot of space.

 

[ntsqd]

Those industrial items, frequently sold as a muffler rather than a filter, also work great for keeping grit out of ARB solenoids.

 

[4307]

One thing I wonder about the LP air moisture separator is (never having taken one apart) do they need XXpsi acting upon them?

Perhaps something with a desiccant that's changed out every six months.

The moisture separator is free flow and no they don't need a certain psi to work.

I've noticed condensation in the cap/bed. It's not leaky, it's due more to our climate. Ontario can get humid year round.

I also hose the rear out from time to time. If the inside isn't totally dry I get condensation. When I wash the back of the truck out, I'll bag the air filter end so it doesn't get wet. Any condensation will hopfully be filtered out by the separator.

I was looking for air line fittings in my shop. for the breather hose.
The separator was kicking around without any future use, and I got creative... LOL
Bling eh?

When I blew into the end of the separator, to see how 'free flow' the devise actually is. After testing it, I noticed condensation on the inside. I was pleasantly surprised, it may work after all.
Anyway, the separator was free flow without effort.

I'll keep a curious eye on it to see if it works.
Honestly, you don't need a separator. A free flow or stock breather at the end of the breather hose, is all you really need. It would be pointless if you live in dry parts of North America.

When I removed the stock breather it was nasty! A good build up of grime, dirt caked in oily goo plugged up the stock breather, on the axle.
Snow, ice buildup, salty road sludge, mud made the breather useless. I couldn't even use the stock breather at the end of the breather extension tube it was so plugged up. I couldn't even blow compressed air through it. :Wow1:

My new breather...

If you want additional filtration above and beyond the filter end I used or the OEM, you can use a in line free follow air filter. The release valve pictured requires pressure to work, the diffs air flow is far from volume.
The minimal air flow through the breather tube, this type of filter ( as a secondary filter) would not need replacing if it's located in a sheltered location.
This filter is cheap to buy. I payed $5. It may be worth it for those wheeling in the desert.

 

[keezer36]

The separator was kicking around without any future use, and I got creative... LOL
Bling eh?

Bling, not at all. Cheap, effective and reason to be in the garage, my favorite place to be. Just ask my ex-wife.:smilies27