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Dana 44 Vent

Discussion in 'Intermediate CJ-5/6/7/8' started by Nosara, Aug 1, 2018.

  1. Aug 1, 2018
    Nosara

    Nosara New Member

    Coastal, Ga.
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    Jun 25, 2018
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    21
    It is my understanding that the Differential vent is the bolt on the brake line block. On my “new” CJ5 it looks like the breather bolt has been replaced with a regular bolt. I have inspected the rear end and there is no other vent hole. Does anyone know a source for the proper bolt?
     

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  2. Aug 1, 2018
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member

    Tantallon, Nova...
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    Incorrect, it's a small hole on the back of the driver side tube.

    [​IMG]

    I welded mine up & plumbed a remote vent hose into the top on the pumpkin.
     
  3. Aug 1, 2018
    Nosara

    Nosara New Member

    Coastal, Ga.
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    Jun 25, 2018
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    I will get out the wirebrush and dig around some more. Just a thought I wonder if it is under the U bolt. I will be changing springs soon.
     

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    Last edited: Aug 1, 2018
  4. Aug 1, 2018
    heavychevy

    heavychevy Sponsor

    Danielsville georgia
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    One thing is sure, if the pumpkin vent cannot breathe, it will blow the pinion seal
    Ask me how i know!!
     
    Last edited: Aug 2, 2018
  5. Aug 1, 2018
    OleBlue

    OleBlue Sponsor

    Tennessee
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    I think it’s up by your brake line, midway between the pumpkin and spring.
     
  6. Aug 2, 2018
    Nosara

    Nosara New Member

    Coastal, Ga.
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    Here is the left rear tube. I will get things cleaned up more, I’m determined to find the vent.
     

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  7. Aug 2, 2018
    OleBlue

    OleBlue Sponsor

    Tennessee
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    Pretty sure that’s the remnants of it in your picture
     
  8. Aug 2, 2018
    Nosara

    Nosara New Member

    Coastal, Ga.
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    Took a picture of the passenger side rear top axle and found it. That needs serious improvement.
     

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  9. Aug 2, 2018
    masscj2a

    masscj2a Member 2020 Sponsor 2019 Sponsor

    Chester Mass
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    Have you taken a look inside the diff yet. If that's the vent hole your showing that is wide open and I can see rust from the picture, you might want to get it there and check things out or at least change the gear oil.
     
  10. Aug 2, 2018
    Nosara

    Nosara New Member

    Coastal, Ga.
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    I’ve not opened it yet. But will this coming week, so far no strange noises. But that is crazy, almost makes me think it was an add on. Regardless I plan to drain and replace all fluids and update that vent. Dana 44 must be pretty stout.
     
  11. Aug 2, 2018
    Nosara

    Nosara New Member

    Coastal, Ga.
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    On the Drivers side there is a bolt in roughly the same point.
     

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  12. Aug 2, 2018
    timgr

    timgr Jeepin' Nerd 2020 Sponsor 2019 Sponsor

    Medford Mass USA
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    The later CJs have a fitting pressed in to that hole, with a rubber hose and cap that goes up to floor level. The higher you can place the outlet, the better. This might be a suitable cap - Dorman Products - 924-284
     
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  13. Aug 3, 2018
    Nosara

    Nosara New Member

    Coastal, Ga.
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    Yay! put in a new vent and tubed it up above the tires. The new breather is a hard rubber. Since it sits against the brake line I did not want anything metal . Changed the fluid and all looked good.
     
  14. Aug 3, 2018
    oldtime

    oldtime oldtime

    St. Charles,...
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  15. Feb 17, 2020
    lugnut

    lugnut New Member

    Nevada, Reno
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  16. Jul 2, 2020
    truckee4x4

    truckee4x4 Member 2020 Sponsor 2019 Sponsor

    Truckee CA
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    Going to do this soon, wondering if I could ask you for a pic showing where you punched the hole in the top of your pumpkin? Is this about right? I don't have the brake lines in yet so rying to think about that in advance too.

    CA82B023-AE50-42EC-9B7D-0F9D27F3F578.jpeg
     
  17. Jul 2, 2020
    zila

    zila I throw poop

    Rock Springs,...
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    My 75 has the vent on the passenger side.
     
  18. Jul 2, 2020
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
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    11,682
    that is for a tapered axle housing. The flanged axle housings are markedly different.
     
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  19. Jul 3, 2020
    Ol Fogie

    Ol Fogie 74 cj5 304, 1943 mb 2020 Sponsor

    Jasper Georgia
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    The vent on my 74 with the factory flanged axle is the same as Zilla said on his 75. Located on the top of the right axle tube about midway between the u-bolts and the pumpkin. The factory vent is just a poor press fit. When mine got knocked out I replaced it by tapping the hole with a 1/8 pipe tap and using a brass pipe threaded hose nipple. If I remember correctly the factory press fitting hole was about the correct size already to tap.
     
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  20. Jul 3, 2020
    truckee4x4

    truckee4x4 Member 2020 Sponsor 2019 Sponsor

    Truckee CA
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    So I know I’m in the “wrong” forum for my year. I’ve got a 1966 CJ5 and I’m trying to add a vent to my axle as I braised the tube-top OEM hole vent closed.

    I am looking for the ideal location to install a vent on the pumpkin.
     

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