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Unread 03-23-2008, 08:14 PM   #1
Whipper Snapper
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Differential vent tube keeps leaking

After installing a new ARB locker in my Dana 44 rear-end my vent tube keeps spitting out oil after a couple hundred miles. The diff housing was notched during installation to allow oil to drain from the axle tubes to the diff. Any advice is appreciated.

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Unread 03-23-2008, 08:23 PM   #2
Benderff
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Did you put an aftermarket cover on? Some covers have a higher fill port allowing more fluid when you fill it. Then it burps out.
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Unread 03-23-2008, 08:28 PM   #3
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Yes I did replace the stock diff cover which may have caused the problem. Thanks for the reply
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Unread 03-23-2008, 11:01 PM   #4
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Yeah, my money's on too much oil in the diff.
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Unread 03-24-2008, 06:49 AM   #5
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Quote:
Originally Posted by Benderff View Post
Did you put an aftermarket cover on? Some covers have a higher fill port allowing more fluid when you fill it. Then it burps out.
x2 thats the problem i had with my riddlers. it would overflow for about 10k miles

pull off the breather cap and clean it well with some brakes parts cleaner and let it dry (little plastic thing on the tip of the breather hose, up by the gas tank fill hose inside the fender)
mine was clogged with 1" of dirt and junk - once the oil starts leaking out, everything sticks to it
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Unread 03-24-2008, 07:54 AM   #6
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Quote:
Originally Posted by Whipper Snapper View Post
After installing a new ARB locker in my Dana 44 rear-end my vent tube keeps spitting out oil after a couple hundred miles. The diff housing was notched during installation to allow oil to drain from the axle tubes to the diff. Any advice is appreciated.
How big of a notch was ground in, I found the recommended notch did not allow enough oil flow, had to go back in a second time and widen it. Not a big deal to pull the locker once set up, just keep track of your shims when you pull it. I still get occasional puking, not much, because of overfilling, but because of the angle I still fill my Rockcrushers close to the top, only get the puking when I have extend highway drives.
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Unread 03-24-2008, 08:21 AM   #7
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From what I recall, the D44 only requires 2 quarts of gear oil, regardless of the height of the fill plug. Not sure if a locker or notching will change that.
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Unread 03-24-2008, 08:35 AM   #8
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I really appreciate all the input. I did not notice any puking until I drove the 300+ miles from Moab to Denver last Saturday.
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Unread 03-24-2008, 09:40 AM   #9
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I'm not an ARB Air Locker owner but I could swear that there's a specific ARB-recommended fix for this issue. It also seems that the latest version of the ARB doesn't have this problem... all I'm saying is that it may not be an overfill problem. Don't ask me for more details, I've already said more than I know for sure.
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Unread 03-24-2008, 02:57 PM   #10
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Jerry, the recommended fix from ARB is to grind in a drainage slot in the housing to allow for proper oil flow, that is their fix for their latest locker. Here is the link to their fix, I found it not to be enough, you can always call their tech support is fantastic.

http://www.arbusa.com/alac/alsp/5-11.pdf
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Unread 03-24-2008, 03:34 PM   #11
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My Super35 was drilled from what I recall talking to the installer.
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Unread 03-24-2008, 03:45 PM   #12
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Quote:
Originally Posted by yellj View Post
Jerry, the recommended fix from ARB is to grind in a drainage slot in the housing to allow for proper oil flow, that is their fix for their latest locker. Here is the link to their fix, I found it not to be enough, you can always call their tech support is fantastic.

http://www.arbusa.com/alac/alsp/5-11.pdf
Awesome, that explains it very well. Thanks!
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Unread 03-24-2008, 08:32 PM   #13
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Awesome, that explains it very well. Thanks!
10-4, the ratio of your help to where I can contribute is about 50 to 1 (with you ahead).
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Unread 03-26-2008, 09:40 AM   #14
Whipper Snapper
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Great info gentlemen, see you on the trail
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Unread 01-02-2009, 08:46 AM   #15
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Quote:
Originally Posted by yellj View Post
Jerry, the recommended fix from ARB is to grind in a drainage slot in the housing to allow for proper oil flow, that is their fix for their latest locker. Here is the link to their fix, I found it not to be enough, you can always call their tech support is fantastic.

http://www.arbusa.com/alac/alsp/5-11.pdf
That link isn't working anymore here is the new one. I guess they are the same.
http://dedq15.mindfly.com/uploads/PD...uides/5-11.pdf

If anyone has any pictures of the slots they put in I would be interested to see them.

Also anyone know what model numbers or dates of ARB this is an issue with? I just had a used ARB put in my D44 and its spitting fluid out the breather in addition to a whine on deceleration. Which I hope is just from breaking in.
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