Found the input shaft roller bearing part number is WBD #6203D. Cup shaped needle bearing in the rear case half did not have a part number that I could find.
After buying and returning 3 "rebuilt" alternators from NAPA, I almost have ONE good alternator. I have to swap rear housings with the one I just gave back to them.
Problems I found amongst the 3 alternators include:
Internal fasteners installed, but not tightened, so grounding problems would occur.
Bent rotor shaft made the pulleys wobble.
Gold colored replacement pulleys do not have the same offset as the OEM pulley so belts don't line up correctly.
Rear housing screw hole threads stripped out for some of the 3 long primary screws that hold the case halves together.
I guess I should take the final one I have to NAPA or a competitor and have it tested to see if it works!
