770G - GRADER, MOTOR 3460 Hydraulic System Parts group 3460 Hydraulic System 3460 Hydraulic System . Rotary Manifold, Standard Controls ( - 654767) Rotary Manifold, Grade Pro ( - 654767) Blade Impact System Field Kit (Standard Controls) Blade Impact System Field Kit (Grade Pro) Blade Impact Valve Blade Impact Switch (Standard Controls) Blade Impact Switch (Grade Pro) Blade Impact Switch Plug (Standard Controls) Blade Impact Switch Plug (Grade Pro)