Rear Differential Breather

rearviewmirror · 12-19-2006, 05:43 AM

Regarding the rear differential breather, I realized I forgot to put the rear diff drain plug gasket on. As I removed the filler bolt I could hear air pressure being relieved from the diff, and this was just after replacing the fluid and doing a short drive. I thought the breather relieved pressure, or does it just "blow off" pressure at a certain level?

I'm not sure if the diff breather keeps pressure at a constant 1 to 1 w/ the atmoshpere or is there always an amount of pressure inside the diff.

While were at it, what are some recommended replacements for the stock breather?

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BLKNBLU · 12-19-2006, 06:15 AM

Don't know about the pressure. Here is a parts source.

http://www.sonoransteel.com/Diff_Breather_Parts.pdf

These are Toyota parts so obviously you can source them yourself at the dealer. Being slow on the uptake I didn't quite get it at first that the top two are the actual breathers and the rest are barbs to accept the hose. Get the barbed breather and the 3/8 nipple. Some 5/16 hose and clamps and your set.

rearviewmirror · 12-19-2006, 11:47 AM

Quote:

Originally Posted by BLKNBLU

Don't know about the pressure. Here is a parts source.

http://www.sonoransteel.com/Diff_Breather_Parts.pdf

These are Toyota parts so obviously you can source them yourself at the dealer. Being slow on the uptake I didn't quite get it at first that the top two are the actual breathers and the rest are barbs to accept the hose. Get the barbed breather and the 3/8 nipple. Some 5/16 hose and clamps and your set.

Thanks..my stock breather doesn't have a hose to anywhere, it just has a breather on top of the differential. I don't need to relocate it, I never drive it through mud or water. (Can't stand cleaning it up afterwards, and there's no place where you could get away with it and still tread lightly.)

12-19-2006, 06:15 AM	#2 (permalink)
BLKNBLU Registered User Join Date: Mar 2004 Location: Gilbert, Arizona Posts: 1,667	Don't know about the pressure. Here is a parts source. http://www.sonoransteel.com/Diff_Breather_Parts.pdf These are Toyota parts so obviously you can source them yourself at the dealer. Being slow on the uptake I didn't quite get it at first that the top two are the actual breathers and the rest are barbs to accept the hose. Get the barbed breather and the 3/8 nipple. Some 5/16 hose and clamps and your set. __________________ 86 4Runner, custom Sonoran Steel rear bumper, 4Crawler 1" body lift, rock sliders from Richard Stubbs, rear Lockright, SAS w/ARB My build thread. http://www.yotatech.com/f66/blknblu-s-sac-155872/

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