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Old 12-18-2013, 07:07 PM   #1
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77 cj7 transfer case and differential questions

The other day I went to engage my lockers in and when I drove with just the hubs locked in I heard a low growling noise. Then I went to put the transfer case in 4wd high and the growling got significantly louder, but only in the cab, outside you couldn't hear anything. So I figured they might be out of fluid. Turns out the front diff was completely empty and the t case was low. But they still made the noise. I know the tcase is going to be loudish being chain driven but where would the rest of the noise be coming from? Anyone have any ideas?

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Old 01-25-2014, 05:54 AM   #2
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What typer of lockers are you running ?

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Bill's Law Of Jeep Reproduction:

If You Take a Jeep Apart And Put It Back Together Enough Times..... Eventually You Will Have TWO of Them !
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Old 01-25-2014, 01:23 PM   #3
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Theyre the stock ones I'm assuming, they are Warn though.. not sure the model
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Old 02-04-2014, 08:30 PM   #4
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Bearings like oil. Check driveshaft and yokes (part on diff and t case that drive shaft bolts to) on diff and t case for up and down movement. they should be tight and have no movement. If loose, bearings are worn. Remove front drive shaft and see if better with hubs locked in and in 4hi. Also can take front diff cover doing visual for gear teeth damage and for bearings worn - pry with screwdriver checking bearings for play left to right or up and down. Any play and bearings are most likely worn - should be metal in diff it that is the case.
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Old 02-04-2014, 10:09 PM   #5
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Alright sweet, thanks for the info, I'll take a look next time I get the chance or once it warms up a little lol. I just replaced the fluids in both and they were both empty before I filled them, I'm hoping there was no damage to the gears in them
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