I have seen this already its been posted sorry. lol j/k good job bro.

 

Well since it is a thread called "for dummies"

What is the purpose and benefits of this mod?

 

long story short, so you can drive through deep water.

 

this is the best write-up i've seen for this mod. good job.
it makes me wonder if this shouldn't be sticky-d in place of the existing one in the DIY section?

 

I'll add it to the DIY sticky.

Good Job!:thumbsup::thumbsup:

 

Hey thank you guys. :thumbsup: I hope it helps.

 

Sweeet write up. Thanks for taking the time to write it and taking the pic's :thumbsup:

 

Nice write up,
I am one of the dummies that will benefit from this. Does the front diff need something like this as well?

 

Nope, just the rear. The front is already extended into your engine bay.

 

good write up i gotta do this soon just gotta get some beer to finish the last step:chug:

 

OHHHHHHHHHH.... I see... thanks for the info!

 

Great write-up! Got my "union" in the mail today. Doing it this afternoon.:thumbsup:

 

Nice write up, I'll be doing this mod soon. Where did you get the parts, TRDparts4u?

 

Hey thanks Rhino, Got them from my local dealer. It was $10 for the two fittings and they had it ready to be picked up the next morning.

 

Since I changed the diff oil a couple of weeks ago I needed to do this mod before my next deepwater crossing (tomorrow).
So I just came from ther dealer and they will get me the breather for monday, luckily the union that goes in the diff was on stock so I'm doing the mod today and use a piece of shop rag as filter for a few days until the breather arrives.:thumbsup::thumbsup:

 

Great info! Thanks.:thumbsup:

 

Just to clarify, this isn't and "open" breather mod from what I can tell...

You have extended the line but under a low internal pressure scenario, the breather still can't suck air in unless you drilled through the 1-way valve...

Correct?

 

Just to clarify, this isn't and "open" breather mod from what I can tell...

You have extended the line but under a low internal pressure scenario, the breather still can't suck air in unless you drilled through the 1-way valve...

Correct?

No, this is not the open mod on the FJ link(assuming you are talking about the mod with the K&N style breather), but It should work just fine to suck air. Before installing it I could blow air in and out of it just fine. The valve is to keep water out.

 

...

AWESOME Writeup! Very nicely done, great pics!

 

My OEM breather had the spring sagged and I believe that it wasn't water or air tight, maybe that's why there was only about a teaspoon of water inside the diff when I changed the fluids a few weeks ago (the diff may had been able to breath freely througth the breather and let some water in when it was deep enough), today I'll pick up the new one and install it so I can remove the shop rag from the top end of the 1/4"fuel line.
Due to lots of rain, no watercrossings were done yesterday:headbang::headbang:, just some mudslinging in the trails:thumbsup::thumbsup::thumbsup:

 

Why not reuse the breather you take off?

 

So people do use the original breather, I just wanted mine to come out perfect or as close to perfect as I could get.

 

Yeah that's what I did. I just got the union part that screws into the diff and put the original breather in the end of the hose. Worked great.

 

I did this today. Read the post two days ago, ordered the parts from the stealership ($12), picked them up this morning, and installed them a couple of hours ago. There's just something about the peace of mind.

 

Okay I found the first two. But just out of curiosity where is the third one?

 

It's on top of the transmission just behind the engine block. Just take a peek back there and you will see it.

 

I finally did my breather mod. I just didn't drill any hole. Simply zip tied the top end to the gas tank breather line.

I didn't see the need to be able to see it. So this works for me.

I would highly recommend that everyone do this mod.

I found that my stock breather only allowed air to blow out. It didn't allow any air to go back in. So this had created a vacuum in my rear end.

It made a fairly loud swoosh sound when I removed the stock breather.

I don't think that can be good.

Any way it's a really easy thing to do. So if you have 15 min. :thumbsup::thumbsup:

 

Yea I just zip tied mine too...It's prob actually dryer without the hole.

I have the same breather end but i thought that it was still only a 1-way valve. Can you confirm that the silver cap lets air both in and out?

 

toku-looks great. that's exactly what i had planned on doing too-i didn't see any reason for it to be exposed.

 

I just did mine tonight... (I was bored.) It was super easy. I ended up using all 6 feet of the fuel line I bought. I just did the same routine of using a few zip ties to secure the hose to the fuel fill tubes inside the fender.

 

I just did mine tonight... (I was bored.) It was super easy. I ended up using all 6 feet of the fuel line I bought. I just did the same routine of using a few zip ties to secure the hose to the fuel fill tubes inside the fender.

Don't you just love quick and easy mods? Nice work!

 

You guys realize this mod isnt necessary. The stock breather has a check valve inside. If you don't believe me, go out side, pull yours out. And blow through it, then try to suck through it. If you can suck air through it, its bad and you should replace.

 

You my friend are 100% wrong...

The issue is when the rear diff gets submerged in say a water crossing...Since the stock diff breather has a check valve in it, no water can get in...through the valve...

When the diff(HOT) is submerged in water(cold), the pressure inside drops due to compression.

You now have a low pressure cavity submerged in water. The only thing keeping this water from entering the diff is the seals. If you dont have the the diff breather extended so air can get in the system and equalize the pressure in the cavity, the diff will suck water right in through the seals.

ALL SEALS CAN LEAK...

 

But yet people still have water getting into their rear diffs? It seems like it would still be necessary.

 

I havnt heard of this on the new taco's. Just of people doing this mod, it takes all of 3 min to check the thing. Only tools required is an adjustable wrench and your lungs.

 

See you miss random ass post #14 and people start blowing shit out their ass. Thats all you had to say. Thanks Hayduke