My G3's are bad about grease coming out of the bearing carrier on the inside plate and getting up on the rigging and armature. I had to take and remove the sleeves, washers and brush holder arms and wash all of them and put them back. I chose that method over trying to wash all of them inside the machine. It was very time consuming and hard considering I mostly had to use one hand while laying on the floor for the bottom ones. Those grease overflow spring loaded pressure things don't work in my opinion. I eventually removed those grease overflow pop offs and put a little threaded nipple with some plastic tubing to let the grease go away from the motor. I'll try and post pics.
