You might find these helpful, but once you have the unit apart any parts
counter should be able to match the bearings and seals
. They are nothing special. I got mine at Dixie Bearings.
Keep On Rolling: Extend the Life of Your Furling Gear
I have done my lower unit (N31). If it were not for the corrosion
and having to reach the circlips down the hole, it would have been easy. Take pictures as you take it apart. They will help when you put it back together.
I added grease nipples on both sides of the bearing.