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Thread: MAINTENANCE : Jeep JK Wrangler NV-241 / NV-241OR Transfer Case Service

  1. #1
    Administrator wayoflife's Avatar
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    MAINTENANCE : Jeep JK Wrangler NV-241 / NV-241OR Transfer Case Service

    As a good part of routine maintenance on your Jeep JK Wrangler, it is highly recommended that you service your NV241 or NV241OR transfer case once every 30,000. Changing out the ATF+4 transfer case fluid will give you an opportunity to inspect it for any signs of abnormal wear going on inside (i.e. bits of metal coming out) and new fluid will help keep things operating smoothly. This is a very simple task, can be done in minutes with the right tools and this write-up should be able to help you out.

    What You Will Need
    • (2) Quarts ATF+4
    • 18mm Socket
    • 10mm Allen Bit
    • Ratchet
    • Bottle Pump
    • Oil Catch Pan

    Instructions
    1. Park your Jeep on level ground. Then, using an 18mm socket, remove the 4 bolts securing the transmission skid plate to the frame driver side frame rail, cross member and gas tank skid plate.


    2. Place an oil catch pan underneath your NV241 transfer case and then, using a 10mm allen bit, remove the fill bolt as shown in this pic.


    3. Using the same 10mm allen bit, loosen your NV241 drain bolt to the point where you can remove it by hand.


    4. Continue removing the NV241 drain bolt by hand and then let the fluid drain completely into the oil catch pan.


    5. Once completely drained of all its fluid, reinstall the NV241 drain bolt using a 10mm allen bit.


    6. Attach a bottle pump to your ATF+4 fluid bottle, insert the feeder tube into the fill hole on your NV241 transfer case and then begin pumping the fluid into it. It should take about 2 quarts of fluid to fill and you’ll know when it’s full when fluid starts to ooze back out the fill hole.


    7. Once the ATF+4 starts to ooze back out, quickly reinstall the fill bolt onto your NV241 transfer case using a 10mm allen bit, clean up your mess and you’re done.


    When finished, please be sure to take your used transmission fluid to your local auto parts store to have it disposed of properly.

  2. #2
    Knows a Thing or Two Topper's Avatar
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    MAINTENANCE : Jeep JK Wrangler NV-241 / NV-241OR Transfer Case Service

    Cool thanks Eddie I like the write ups they are helpful tips thanks brother

  3. #3
    Hooked kttx740's Avatar
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    Thanks Eddie! This now on my list of maintenance items to do as soon as it warms up a bit here in VA.

    Cheers!

  4. #4
    Been Around the Block orngcrushrgrl's Avatar
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    Hey thanks! I know we haven't done this so now I'll be sure to as soon as possible
    "keep on jeepin' on"

  5. #5
    Nothing but a Thing mcpuck's Avatar
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    MAINTENANCE : Jeep JK Wrangler NV-241 / NV-241OR Transfer Case Service

    this is on the list for this weekend!

  6. #6
    Knows a Thing or Two jkjurny's Avatar
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    Thanks! Any torque guidelines on those bolts?

  7. #7
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    Re: MAINTENANCE : Jeep JK Wrangler NV-241 / NV-241OR Transfer Case Service

    Quote Originally Posted by jkjurny View Post
    Thanks! Any torque guidelines on those bolts?
    http://project-jk.com/jeep-jk-write-...orque-settings

    its in here

    Sent from my PC36100 using WAYALIFE mobile app

  8. #8
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    Re: MAINTENANCE : Jeep JK Wrangler NV-241 / NV-241OR Transfer Case Service

    It's in the dif. And drive line section.:thumbup:

    Sent from my PC36100 using WAYALIFE mobile app

  9. #9
    Hooked Markymark420's Avatar
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    As a side note: What is the purpose of the bracket (dampener???) mounted on the rear of the transfer case? It is not present on mine, but the mounting points are there.

  10. #10
    Administrator wayoflife's Avatar
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    Quote Originally Posted by jkjurny View Post
    Thanks! Any torque guidelines on those bolts?
    Quote Originally Posted by Tackerdown View Post
    http://project-jk.com/jeep-jk-write-...orque-settings

    its in here

    Sent from my PC36100 using WAYALIFE mobile app
    Yup, the link Tackerdown posted will give you what you need on most anything on your JK. For the fill/drain bolts, 15-25 ft. lbs. will be what you want. Next to nothing.

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