adamsg said:I bought one used and it had the bearing already installed. As far as I could tell it just had one bearing.
If the directions say to use a drift, just get a soft metal drift and carefully tap it in. Or, you can get a socket that is large enough to cover the edge of the bearing. Tap it in. Its easier to keep straight this way.
Theres no big secret to it. Just try to keep it going in straight and only tap on the edge, not the center of the bearing. Tap it in until its flush with the pulley surface.
Oh and lay the pulley on wood or cardboard.
Also, when you put the pulley on to the wheel, its hard to get meshed up with the rubber cush drive. Just spray the rubber with windex and it will go right on.