Forum Discussion
Grit_dog
Jun 05, 2021Navigator II
Interesting diagnoses. Not that u-joints or unit bearings don’t need to be replaced periodically, but something doesn’t sound right. You front axle u joints and axle shafts should even be turning when in 2 wd and even a bad u joint wouldnt exhibit any driveability issues on a super duty in 2wd. Did you drive it with the hubs locked in forever?
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