Take the bolts off the front and pop the cover off, next pop that snap ring out and pop the locker itself out. Shake it around the see if you hear rattling or if it is just dry. Try to spray some wd40 in that sob and turn it till the day turns to night. After that, if it doesn't work, use it as a nice door stop or a paper weight and order from the guy above. 4WheelParts sells upgraded worn lockers that I bought for my 7.3 and they were great, came with a 5 year unlimited warranty.
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