This is similar to mine:
http://www.macsautoparts.com/assets/...u/64-14595.jpg
an oil port to the north, the shaft & bushing central, and an 'oil well' & wick below. The oil you dribble in the oil port runs around the rear open end of the bushing... some goes around the shaft, much of it drops down behind & into the well. There's a tiny bleed hole that keeps the well no more than 80% full. The oil wick pressed upward against the OUTSIDE of the bushing. Somehow, this is supposed to draw oil up thru the bronze and around the shaft but I don't readily see how. I don't think it's due to heat; heat comes from friction and properly oiled- there shouldn't be any of consequence.