EMPLOYEE WAS ASSISTING IN TURNING OVER LEFT SIDEDOZER TRACK FRAME. THE SHOP CRANE WAS USED AS THE PRIMARY LOAD SUPPORT AND A STEEL BAR WAS USED TO HELP TIP FRAME OVER CENTER. INJURED WAS USING THE STEEL BAR AND WHEN THE FRAME CAME OVER IT FORCED THE BAR DOWN TO THE FLOOR STRIKING INJUREDACROSS TOP OF LEFT FOOT.