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Unread 10-05-2011, 05:10 PM   #1
JCMathis
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Front Differential Vent Nipple!

Hey All --
I figured I would crawl under the heep today and just check it all out... I noticed something alarming and I would love some input and help with this issue.

I saw some oil coming from what I believe was the top of my front diff. With further inspection I noticed a hose dangling connected to a vent (small white cap) near my radiator. This hose looks like it belongs to the top of the front diff. The problem is there is no nipple between the two. (Hole --->missing nipple<--- hose)

I'm curious if it is a nipple that I am missing and also what size this nipple is? Does anyone know the NPT size thread so I may make my own;? or have a good idea where I can find a replacement part?

Thank you for your time,
JCMATHIS


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Unread 10-05-2011, 05:23 PM   #2
JCMathis
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Unread 10-05-2011, 05:43 PM   #3
pmcjeep
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Are the threads in the hole still good or are they stripped out?
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Unread 10-05-2011, 05:50 PM   #4
JCMathis
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I'm wondering if part of the nipple is still in there, because it is smooth and clean, I cleaned it up with a Qtip and its smooth.

So I am correct that there is a nipple? And this hose does belong to this hole?
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Unread 10-05-2011, 08:30 PM   #5
jon1371usmc
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...

Last edited by jon1371usmc; 10-05-2011 at 08:32 PM.. Reason: Not needed.
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Unread 10-05-2011, 09:03 PM   #6
Knuckelhead
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Quote:
Originally Posted by JCMathis View Post
So I am correct that there is a nipple? And this hose does belong to this hole?
There's supposed to be an OEM pressed in plastic nipple (no threads). IIRC

When I built my HPd30 I tapped the hole to 1/8" NPT and installed a brass nipple, yes the hose goes there...HTH
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Unread 10-05-2011, 10:06 PM   #7
joe108
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tap it I say.
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Unread 09-30-2012, 03:22 AM   #8
WranglerSahara
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i know this is an old post, but i have the exact same problem, only my mechanic when i asked him about the hose, he effin didnt know what it was for and just removed it and threw away, to find out later it was the breather tube :'(

had to order all the way from Jamaica as i couldnt find it here in KSA seems like nobody effin cares about their axles and they wonder why jeeps break a lot here.

No my question is , do i squeeze the lower vent tube ( plastic ) in the axle hole or do i use any kind of sealant to firmly hold it and prevent from falling off?
Wrangler 2000
thanks
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Unread 10-01-2012, 05:13 PM   #9
joe108
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First thing you should do is toss your "mechanic" where he tossed your hose, mechanic he is not, any mechanic would have known what that is, now he does, in time for his next victim
photos?
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Unread 10-01-2012, 05:18 PM   #10
joe108
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First thing you should do is toss your "Mechanic" where he tossed your hose, mechanic he is not. Any mechanic would have know what that is, but now he knows for his next victim thanks to your uneeded hose
photos?
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Unread 10-02-2012, 08:03 AM   #11
joe_jeep
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clean the hole where the nipple goes really good. i would apply a small amount of some type of adhesive. press it in.
or thread the hole and buy a good quality nipple and thread it in.
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Unread 02-20-2014, 09:27 PM   #12
TexasChris
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Hate to bump this, but I'm having trouble connecting the tube to the differential and don't feel it worth a new thread.

My vent tube has the same ending shown in the 2nd image of the 2nd post, while my diff has a plastic nipple that extends out about half an inch. The circumference of the nipple gets bigger as it goes out, and it is to the point that I can't fit the vent tube over the nipple. Am I missing something really obvious here?
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Unread 02-20-2014, 09:47 PM   #13
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Unread 02-20-2014, 09:48 PM   #14
TexasChris
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So that vent tube ending (picture above) is definitely (albeit, painfully) supposed to fit over the enlarged plastic nipple that came on the diff?
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diff fluid capacity , diff fluid level , diff leak , differential , differential cover

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