I don't recall pics being posted so here goes.
First pic shows the bearing with 6 balls in a cage.
Second pic shows the bearing with 6 balls but no cage (same pump, other side).
I don't know why the cage disintegrated but obviously it did.
I wonder how long before those 6 balls sneak out and cause indigestion for the timing chain
I don't have a pic of a new style pump but the bearing has shields so you can't see the balls.
Sixto
93 300SD