john Deere 2054 swing problem

at a very slow swing I'm getting this noise? swing gear box is full, rotary manifold rebuilt 200 hours ago. started doing this 3 days ago and getting worse daily. had brandt come out they had no explanation for it. bearing is only a few thousand hours old greased regularly and rotec was cleaned out and refilled with grease when rotary was done .



http://ift.tt/1mg12zr