A lift assist mechanism is provided for positioning a hatch cover in relation to a corresponding opening in a hatch frame. The assist mechanism includes a torsion bar and a lifting mechanism. The torsion bar has first and second opposite ends. The first end secures to the hatch frame. The second end connects to a bar spur gear. The lifting assembly includes a lift spur gear and a hinge gear. The lift spur gear engages the bar spur gear. The gears convert an acute angle twist of the bar to substantially perpendicular pivot the hatch cover from the hatch frame.