theres 2 breathers. im makin breathers tomorow and wanna know if i can plug one off with a bolt...so i dont have 2 lines runnin up to the cab. need to know soon. as of now i am gonna cut one off...if it doesnt work..ill add a slplice in the tube to go to both. peace!:rasta:

:rasta: :nuke: :eek: :D

well, to my way of thinking if you're in eureka nevada it might not be a necessity, but the wheeling we do here in Oz, has a variety of terrains, more often than not including some form of mud or water, well over a metre deep

to have a plugged up breather, would do the following:
you drive to the park/play area, at least an hour, the diff is getting nice and warm, you play around a while in low range and stuff for a few hours, shes getting HOT, now you hit a puddle, the diff cools, the oil expands and the air rushes out,

now with the hole plugged, the air is rushing out your axle seals, pinion seal and flange between housing and diff, destroying the seals AND allowing water back into your diff oil pitting your gears and reducing the life of the bearings and everything inside the housing


BUT if you never see water and im told some trucks over there rarely see mud or water, then it shouldnt be THAT bad, id personally run two, but thats just me!!

my front is bright blue and my back is bright red:D :smokin:

Yes, you need one breather per axle.

BJ42 has it a little backwards though, when the diff cools (when you run it into water/snow), the oil and air inside the tube contract. This will draw air/water into the axle, which is bad. If you plugged the breather, when the air/oil expands, it will be putting a lot of pressure on the axle seals, which will cause loss of oil, and maybe a leaky seal which will then let even more water in upon cooling/contraction.

It's not that much more work to do the second one if you're already doing the first. Just do it right the first time. If for some reason you don't want two lines going to a safe, dry spot, use a T to splice them.

i never ran any, but of course i never took it in anythign deep cuz that would mean cleaning it, lol, i did however fill it to much once and it would puke gear oil out teh breather cap after the haul up to sly park for gas! jiMMy

They were there, you just didn't run extensions like Dustin is talking about. If you plugged the breathers, it would have been puking gear lube out of the axles seals instead of the breather. I don't run extensions on my breathers and they have never sucked in any water, but whatever you do, don't plug them.

Yes you need breathers to allow for thermal expansion, otherwise like what everyone else said your gonna have gear oil coming out of your seals. Your xfer case has one too. Its a good idea to add extesions to the breathers if you plan on doing water crossings or muddin. Unless you like changing out your fluids everytime you get into the deep muck or water.........:skull:

no, no, no...
--- there are 2 on each axle stock. do i need two per axle. or can i plug ONE on ONE axle and justr run only one per axle. look at an fj40 axle..thers one on each side of the pumpkin.

My '62 has two vents on the rear axel but the '76 rear axel I am swaping in has only one. Should be fine w/ one even better w/ 2!;)

One should be just fine the axle is "open" on the inside between both outer axle seals and will breath just fine out one hole I'm not sure why toyota installed two breathers in there rear axle nobody else dose as far as I know.

Oh, I see. I looked at the axle in my garage last night to see if that's what you were talking about, and it only has 1 breather. Today I looked under my FJ55, and sure enough it has 2. You can plug one, just make sure you have one breather per tube.

i only have the one :(

and it doubles as the point where the T-piece screws into, held by the extended breather

using 1980 onwards axles probly they changed over sometime late in the 70s

bj42
What do you do to not shortcircuit the battery when you're wading with water over the bonnet?

Use fresh water.

Originally posted by jbt
bj42
What do you do to not shortcircuit the battery when you're wading with water over the bonnet?

well, ummm i dunno when i said id be driving in water over my bonnet, but 1 metre of water is just washing over my tyres

my batteries also are in the cab (dual batteries) i have sealed batteries in waterproof containers in the rear of the 'cab'

if i had water over MY bonnet... frankly itd be time to give in

what exactly do you want to know/do

building something to cross rivers? you must have one LOWERED beast!! but yeah ive hosed my batteries clean lots and had tehm absolutely coated in mud, and it hasnt as yet posed any dramas!