UPPERSTRUCTURE / Control Valve Disassemble Right Travel Spool (37) 12. Clamp spool (37) in a vise by using wooden pieces. Remove bolt (41), spring seat (38), spring (39) and spring seat (38) from spool (37). Disassemble Boom 1 Spool (50) 16. Clamp spool (50) in a vise by using wooden pieces. Remove bolt (41), spring seat (38), spring (39) and spring seat (38) from spool (50). : 8 mm Disassemble Bucket Spool (47) 13. Clamp spool (47) in a vise by using wooden pieces. Remove bolt (41), spring seat (38), spring (39) and spring seat (38) from spool (47). : 8 mm 17. Heat the plug (48) part of spool (50) by using a drier. Remove plug (48) by using special tool (ST 5909).
Remove O-Ring (44) and backup ring (43) from plug (48). 18. Remove spring (45) and poppet (49) from spool (50). : 8 mm 14. Heat the plug (42) part of spool (47) by using a drier. Remove plug (42) by using special tool (ST 5909). Remove O-Ring (44) and backup ring (43) from plug (42). Disassemble Arm 2 Spool (51) 19. Clamp spool (51) in a vise by using wooden pieces. Remove bolt (41), spring seats (38, 52), springs (53, 39) and spring seat (52, 38) from spool (51). ST 5909 : 8 mm W157-02-05-049 15. Remove spring (45) and poppet (46) from spool (47). W2-5-11