AUTOCAR IS RECALLING 770 MY 2007-2009 WXLL HEAVY DUTY CLASS 8 VEHICLES EQUIPPED WITH RESIDENTIAL FRONT-LOADER APPLICATIONS. THESE VEHICLES MAY DEVELOP CRACKS MAINLY IN THE TOP FLANGE OF THE RH EXTENSION OF THE FRAME RAIL AT THE FRONT SPLAY BREAK WHERE THE RE-ENFORCING STRAPS ARE WELDED. DURING FRONT-LOADER OPERATION, RESIDUAL HYDRAULIC PRESSURE CAUSES THE FRONT LOADER SYSTEM TO PUSH DOWN ON THE BUMPER-MOUNTED BRACKETS, CAUSING VISIBLE DEFLECTION OF THE CHASSIS FROM THE SUSPENSION FRONT HANGER BRACKET FORWARD.