SLJY300 amphibious crawler hydraulic excavator is new type.specially for floating ... land and swam areas. SLJY300 Amphibious Crawler Hydraulic Excavator--1, Engine,hydraulic pump,valve,swivel pump and ... and preventive action.4, The mobility of the excavator is fitted on to the tracked pontoon to ... operator.7, Specifically design for areas where normal excavator cannot operate in, like swamp areas, beach, ...