UPPERSTRUCTURE / Control Valve 20. Remove socket bolts (63) (8 used). Remove caps (67) (3 used), (64) and O-rings (59) (4 used) from housing (1). Disassemble Arm 2 Flow Rate Control Valve 26. Remove socket bolts (97) (8 used). Remove body (123), O-rings (77) (3 used), (13) (2 used) (78) and poppet (15) from housing (1). : 8 mm Disassemble Flow Combiner Valve 21. Remove socket bolts (68) (2 used). Remove cap (69), O-ring (4) and the spool (73) assembly from housing (1). Remove bolt (70), spring seats (71) (2 used) and spring (72) from spool (73). : 8 mm 27. Remove plugs (114) (3 used), spring seats (116) (3 used), springs (117, 121, 125) and spools (118, 122, 124) from body (123). :
5 mm Disassemble Overload Relief Valve IMPORTANT: Do not disassemble the overload relief valve. If the overload relief valve is disassembled, pressure must be adjusted. (Refer to the Operational Performance Test section / TROUBLESHOOTING in the separated volume, T/M.) 22. Remove overload relief valves (74) (2 used) from housing (1). : 24 mm 28. Remove plugs (119) (3 used) and (127) from body (123). 29. Remove spring (113) and poppet (112) from housing (1). 30. Remove springs (87) (2 used) and the poppet (98, 108) assemblies from housing (1). Remove plugs (101, 111), springs (100, 110) and poppets (99, 109) from poppets (98, 108). : 32 mm Disassemble Bucket Flow Rate Control Valve 23.
Remove socket bolts (97) (4 used). Remove body (91) and O-rings (13, 77) from housing (1). : 8 mm 24. Remove plug (96), spring seat (94), spring (93) and spool (92) from body (91). Remove plug (89) from body (91). : 5 mm 25. Remove sleeve (88), spring (87), plug (86), spring (85) and poppets (84, 83) from housing (1). : 27 mm W2-5-13