since you apparently have it disassembled, be careful of which way the oil scoop is turned front to rear when reassembling One of the manuals (don't remember which one) has it reversed, and it will not lubricate the shaft turned that way. Here is a picture from the Blue Ribbon cooling system manual. In this picture the scoop (little curly Q to the right of the fan hub) is reversed, it should be turned with the tail facing the opposite direction. The way it is shown in this picture it will not direct the oil to the shaft. It is also incorrect in my GSS 1411 revision 1 service manual.
The thing to remember when sorting this out is the the outer drum turns, but the center shaft is stationary, so it is easy to reverse how it goes together.