A mechanical pallet lift, such as incorporated into a conveyor driven process, having a base. A lower frame is displaceably supported upon the base and includes a first plurality of upwardly extending and spaced apart walls. An upper frame includes a second plurality of downwardly extending and spaced apart walls which nest in offsetting fashion with the first plurality of walls in an initial position. A rotary driven crank includes a first linkage elevating the upper frame so that the second walls are located above the first walls, a second linkage successively displacing the lower frame to cause the first walls to align with the second walls concurrent with the first linkage reverse lowering the upper frame to seat upon the lower frame. A limit stroke bracket surrounds the base includes column supports which, upon shifting in the elevated position, are engaged by horizontal exterior supports mounted to said upper frame upon reverse actuating of said crank at an intermediate elevated position.