hitachi — DISASSEMBLE CONTROL VALVE (4-SPOOL HOUSING UPPER AND LOWER SURFACES)

UPPERSTRUCTURE / Control Valve W1 Ｊ 1-02-05-053 W2-5-30 Main Relief Valve 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 61 1 62 Check 63 57 64 Flow Combiner Valve 62 Check Valve-2