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Originally Posted by hydrotoys  2 questions...
-Should I put a "loop" of hose at the top, facing downwards, so that car washes and other down-pours don't enter the breather?
-If the original only lets pressure out, but not in, then wouldn't it be good enough to keep water out, not in?
Thanks for the write-up. |
Yes, loop the end to point down. I ran out of hose and will be doing that last part today.
You want pressure to be relieved in both directions. You could get too much negative pressure from the differential cooling quickly. That will result in either the stock breather failing and sucking in whatever is around it, or sucking in air/water/mud from the hubs. Then not only do you have to drain and clean the differential, you also have to clean out and repack the bearings.
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Originally Posted by NauticalBlue Awesome job, Toxarch! Thanks for the write up! 
Now you just have to do the front diff and the tranny  |
On the 1st gen Tundras, the front differential and the tranny breathers were already extended up into the top of the engine compartment. But they did not do it for the rear differential. I'm hoping they did the same thing on the 2nd gen Tundras. If so, then I am done.