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Message: [QUOTE="lincolnlocker, post: 296418, member: 944"] only when it is locked in 4x4 does it do it while under load or coasting.... i can lock the hubs in and leave it in 2wd and no noise. i can leave the hubs unlocked and switch it to 4wd and no noise(esof has not worked in a year) so the hubs don't lock automatically anymore... but as soon as i lock the hubs in and switch it to 4wd the howl/hum is realy loud.... just replaced both unit bearings and axle ujoints... drive shaft joints are still good... drained the tcase fluid and some small flakes came out but no chunks.... drained front diff to see if anything was loose and everything was solid but the oil was off color, looked like someone dumped silver dust in it and mixed it up.. changed the front diff oil last summer and didn't even look that bad only milky from moisture then.. so is it possible i could have a bearing wore and is howling? what else should i check? [/QUOTE]

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