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Thread: MAINTENANCE : Jeep JK Wrangler Differential Fluid Change Write-Up

  1. #241
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    noise from front differential?

    I changed the differential fluid in both axles this weekend. I've done this before but this was the first time taking the covers off. That RTV sealant was not fun to work with, I got it everywhere. Anyway, I seem to be noticing a slight hum from the front end when in 4WD. And I might be noticing some additional wheel scrub when turning. Any idea what's going on here, do I need to re-do the front diff?

  2. #242
    Knows a Thing or Two Gbint's Avatar
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    Why didn’t you just pull the drain plugs instead of pulling covers?


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  3. #243
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    Last edited by Hoosier; 12-25-2018 at 06:53 PM.

  4. #244
    Been Around the Block Lojo's Avatar
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    Hey all looking for some advice here. I did a fluid change today both front and rear. Front looked good but rear had a metallic grey sludge around the drain magnet. I would say just about an ounce. Anyone ever see this before? First time change at 25k. Also really fine shavings. Stock gears from factory. Thanks in advance and thanks Eddie for the detailed write up.


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  5. #245
    Resident Smartass OverlanderJK's Avatar
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    Quote Originally Posted by Lojo View Post
    Hey all looking for some advice here. I did a fluid change today both front and rear. Front looked good but rear had a metallic grey sludge around the drain magnet. I would say just about an ounce. Anyone ever see this before? First time change at 25k. Also really fine shavings. Stock gears from factory. Thanks in advance and thanks Eddie for the detailed write up.


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    Eh, if it was that bad you probably would have taken a picture of it. It’s fine I’m sure.


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  6. #246
    Meme King WJCO's Avatar
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    Quote Originally Posted by Lojo View Post
    Hey all looking for some advice here. I did a fluid change today both front and rear. Front looked good but rear had a metallic grey sludge around the drain magnet. I would say just about an ounce. Anyone ever see this before? First time change at 25k. Also really fine shavings. Stock gears from factory. Thanks in advance and thanks Eddie for the detailed write up.


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    Sounds normal. Although your front gears are spinning all of the time, they're not really being 'driven' unless you are in 4wd. Normal to have darker fluid in the rear and a little metal sludge on the magnets is common.
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  7. #247
    Been Around the Block Lojo's Avatar
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    Quote Originally Posted by WJCO View Post
    Sounds normal. Although your front gears are spinning all of the time, they're not really being 'driven' unless you are in 4wd. Normal to have darker fluid in the rear and a little metal sludge on the magnets is common.
    Thanks first time doing diff’s so just wanted to be sure.


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  8. #248
    Been Around the Block Lojo's Avatar
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    Quote Originally Posted by OverlanderJK View Post
    Eh, if it was that bad you probably would have taken a picture of it. It’s fine I’m sure.


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    Probably should have. No chunks just fine shavings. It seemed normal but the sludge puzzled me for a moment. Better safe then sorry. Thanks


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