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Old May 14, 2012 | 11:07 PM
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From: fairview utah
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Originally Posted by fathan16
my dana 30 has a vacuum hose coming out of the diff but i have 1 piece shafts. does this mean someone changed the guts out some time in the past? or whats up with the hose?
my hose is just a vent tube where does it come from
Old May 14, 2012 | 11:08 PM
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Originally Posted by fathan16

the dana 30 doesn't even have locking hubs
I know
Old May 14, 2012 | 11:10 PM
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Originally Posted by john78
my hose is just a vent tube where does it come from
just above the pinion i think. i was wondering if it was a vent tube too but why would it need that?
Old May 14, 2012 | 11:10 PM
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Originally Posted by Gorillaxj

I am a little confused by the question...

I have a locked front diff, I have locking hubs, I run my hubs locked any time I am going off pavement for the entire time, weather thats a dirt road, a trail or I am even in 2wd until I get to a point where i need 4wheel drive, then i just shift into 4wd. I can drive on the pavement this way as well in 2wd. being locked up front wont change anything (other then a little noise/possible tire scrub) in 2wd, and will handle mostly Just like it does now.

There should be no reason you can't drive on a dirt road in 2wd or 4wd with a locked front diff, you may need to adjust driveling habits but it should only help
That's why I was hope that that disco one would stand up to 35 so I could just unlock it from in the cab turn it and lock it right back up.
Old May 14, 2012 | 11:12 PM
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Originally Posted by fathan16
my dana 30 has a vacuum hose coming out of the diff but i have 1 piece shafts. does this mean someone changed the guts out some time in the past? or whats up with the hose?
I think thats just your breather for the diff. jeep stopped making the disconnect in 90, some early model 91's came with it though. if it has the vacuum actuator its on the pass side of the axle tube and is very obvious. looks like this
(this one has a cable conversion but still. same thing)


Originally Posted by fathan16
the dana 30 doesn't even have locking hubs
no sir, but the early models had a disconnecting axle which would allow the front to spin independently from each other and the diff would free-spin
Old May 14, 2012 | 11:12 PM
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Originally Posted by fathan16

just above the pinion i think. i was wondering if it was a vent tube too but why would it need that?
The vac disco hose is on pass side
Old May 14, 2012 | 11:13 PM
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Originally Posted by fathan16
just above the pinion i think. i was wondering if it was a vent tube too but why would it need that?
when things get hot/cold air expands/contracts, it allows air to come in and out without sucking water and debris into the diff. If it didn't have the breather the pressure would push out a seal and leak all the fluid lol
Last edited by Gorillaxj; May 14, 2012 at 11:17 PM.
Old May 14, 2012 | 11:15 PM
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Originally Posted by Tobyxj
The vac disco hose is on pass side
good, that's one less ghetto rigged thing on my jeep haha
Old May 14, 2012 | 11:17 PM
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Originally Posted by fathan16

good, that's one less ghetto rigged thing on my jeep haha
Lol
Old May 14, 2012 | 11:18 PM
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i still wanna change the bezel for my 4wd, i have an np242 with a 231 bezel
Old May 14, 2012 | 11:19 PM
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Originally Posted by Gorillaxj
when things get hot/cold air expands/contracts, it allows air to come in and out without sucking water and debris into the diff. If it didn't have the breather the pressure would push out a seal and leak all the fluid lol
makes sense. my seals are shot, when on a slight angle the fluid drains out the tube
Old May 14, 2012 | 11:19 PM
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Originally Posted by fathan16
i still wanna change the bezel for my 4wd, i have an np242 with a 231 bezel
then go get one... lazy ***! lol I swapped the bezel before I swapped the case... its a lot less work
Old May 14, 2012 | 11:20 PM
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Originally Posted by fathan16
just get two rims with 5 and two rims with 6 lugs
I was thinking about this, except I couldn't rotate my own tires.
Old May 14, 2012 | 11:21 PM
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Originally Posted by fathan16
makes sense. my seals are shot, when on a slight angle the fluid drains out the tube
thats no good! a lot of seals go bad due to a clogged breather. worth cleaning with brake cleaner when you replace the seals (if it has the spring cap on it)
Old May 14, 2012 | 11:21 PM
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Originally Posted by Mr Talon
I was thinking about this, except I couldn't rotate my own tires.
or carry a spare, and it would look very dumb lol



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