Just a quick question, but what model year is the Cherokee 140? I've got a 1975 (Cruiser) and it's got toe brakes on both sides in addition to the handbrake below the central portion of the instrument panel.
You can still control the aircraft's brakes from your side (no toe brakes) using coordinated rudder and handbrake inputs. It isn't as smooth as having toe-brakes, but it's far from impossible. In fact, I'm fairly certain that early model 140's didn't have toe-brakes on either side, only the centrally located handbrake.