Picked up another Royal 10 in pretty good shape the other day.  Everything seems to be working except the escapement.  The linkages from the keys and space bar seem to move freely but the escapement wheel does not turn at all, along with a few rollers behind it.  My attempts to manually help it to move haven't worked and I certainly do not want to force it.

How should I approach this?  Spray it with penetrating oil and try again tomorrow?  Try to remove the wheel to try to clean it?  Something else?