UPPERSTRUCTURE / Control Valve 1 Check Valve-1 Check Valve-2 Figure of Control Valve (Upper) Figure of Control Valve (Lower) Section of Overload Relief Valve Section of Arm Regenerative Valve 56 57 36 34, 35 37 37 36 62 61 57, 59 60 57 63 64 Check Valve-2 Flow Combiner Valve Close-Up of Arm Regenerative Valve Close-Up of Main Relief Valve Close-Up of Bucket Regenerative Valve W1J1-02-05-046 Section of Check Valve-1, Check Valve-2, Flow Combiner Valve W2-5-38 Close-Up of Overload Relief Valve Section of Bucket Reg Valve, Overload Relief Valv enerative e Che ck Valve-1