Originally Posted by
Velo Mule
. I would guess that the end cap may be threaded or pressed on. You could also stand the pedals so that the threaded part of the axle is pointing upward and place a few drops of oil into the gap between the axle and the body. I've done this on the swaged Schwinn Approved pedals that are not easily rebuildable with good results.
I’ve worked on a few too and most will not gracefully open up (vs destructively open). I’ve oiled them as told above which improves them but does not ensure the bearings are cleaned. But, probably suitable for purpose. Either those bikes will not be ridden or will be ridden very little. I doubt those vintage rubber block pedals ever see serious mileage.