Do not make the mistake of over tightening the nut. If the pinion gets hard to turn and think you can just back the nut off some, you can't.
There is a crush sleeve between the two bearings that is crushed when tightening the nut to set bearing preload.
If the crush sleeve is over crushed it needs to be replaced.
Go very slow and check for smooth rotation regularly when tightening the nut.
An inch pound torque wrench is recommended for this procedure.


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