National Ball Bearing Part No 203-FF fit like a glove.
So, for anyone in the future that does not want a doofus award........
Remove the cap on the end of the hub. (You can drill a hole and insert a sheetmetal screw, which requires welding the hole and smoothing it. The other options are tacking a washer to the cap with a MIG or doing as I did on the second and tack it with a torch and brazing rod. Hit the washer with the torch when you have it removed and melt the brass, which makes the washer fall off. Clean up with sander to remove the remaining brass. If MIG attached, grind the tack weld off and then smooth surface after the washer is off.)
Step two: remove two snap rings that are under the cap. One is approx 1.25 in diameter and the other is about .5 in. diameter. The smaller holds the bearing onto the stub shaft of the idler mount. The other retains the bearing in the pulley itself. I had a hard time with the larger snap ring as once compressed it it just about exactly the size of the bore you must slip it out of.
Step three: Using a press, place pulley flat on the press table, with the hub of the stub shaft exposed. Using some sort of filler stock (I used a socket wrench) press down on the center of the stub shaft hub, pushing it out of the pulley bearing.
Step four: Flip over the pulley on the press table. You may need stock to give ample room for the bearing to come out of the pulley, between the pulley and the table. Using stock (again I used a socket wrench) press on the center of the bearing and push it out of the pulley.
Your pulley will now have an open hole with one snap ring left in it, as it has a snap ring on each side of the pulley to retain the bearing. Clean the pulley and stub shaft assembly (bead blast, wire wheel, soak in evaporust, etc.).
Once clean, place new bearing into pulley assembly opposite to the snap ring that was left in. Mine slipped in 1/4 of the way before it stuck. I tapped the bearing lightly on the bench with a socket as the driver. It would be better to use the press and push it in until it makes contact with the snap ring (less abusive to the bearing than tapping it with a hammer). Once the bearing is seated against the snap ring, you should be able to install the other large snap ring into the pulley bore.
After the pulley is assembled with the new bearing, slip it on the end of the stub shaft. Place the assembly on the press table and use stock (again I used a socket) to push on the INNER bearing hub ONLY!!!! and press the bearing/pulley assembly until seated on the stub shaft. Once it is seated the smaller snap ring can be installed in its groove. Using a socket, I tapped the grease cap back into place, much like a freeze plug. I also placed a dab of grease on the end of the shaft, where the smaller snap ring was located prior to installing the cap. I figured it would prevent corrosion inside there, if moisture got to it.
Got in a hurry or I would have snapped pics. Took maybe 5 minutes to have it assembled.
