... front loader,back digger 2,buffer valve hydraulic system 3,Engine type/power(KW):Weichai 4100/44kw(60HP) front loader ... ,back digger ,backhoe loader 4x4small type backhoe loader buffer valve hydraulic system, ensure reliable, efficient, stable job.Adopt ... valves, moving arm rotary control assembly buffer valve hydraulic system, ensure reliable, efficient, stable job. Cab and covering ...