UPPERSTRUCTURE / Control Valve Assemble Bucket Regenerative Valve 10. Install piston (26), spring (36) and check valve (37) to sleeve (33). 11. Install O-rings (28, 35) and backup rings (27, 34) to sleeve (33). Install sleeve (33) to sleeve (31). 12. Install spool (25), spring (30) and spring seat (21) to sleeve (31). IMPORTANT: Cap (19) is pushed outside by spring (30). While pushing cap (19) to sleeve (31), install cap (19). 13. Install O-ring (20) to cap (19). Clamp sleeve (31) into a vise. Install cap (19) to sleeve (31). 16. Install poppet (49), spring (48) and piston (41) to cap (46). IMPORTANT:
Align the matching marks and tighten adjusting screw (38) to the same turns when disassembling. 17. Install lock nut (40) and O-ring (39) to adjusting screw (38). Install adjusting screw (38) to sleeve (42). Tighten lock nut (40). : 30 mm : 60 N m (6 kgf m, 44 lbf ft) 18. Install backup ring (51) and O-ring (52) to pilot seat (50). 19. Install main poppet (54) and spring (53) to sleeve (55). 20. Install the sleeve (55) assembly to cap (46). : 14 mm : 180 N m (18.3 kgf m, 133 lbf ft) 14. Install O-ring (24) to sleeve (31). Install sleeve (31) to housing (1). : 36 mm 21. Install O-ring (47) to cap (46). IMPORTANT: Adjust pressure of the main relief valve.
(Refer to the Operational Performance Test section / TROUBLESHOOTING in the separated volume, T/M.) 22. Install the main relief valve to housing (1). : 180 N m (18.3 kgf m, 133 lbf ft) Assemble Main Relief Valve IMPORTANT: Align the matching marks and tighten sleeve (42) to the same turns when disassembling. 15. Install lock nut (45) and O-rings (43, 44) to sleeve (42). Install sleeve (42) to cap (46). Tighten lock nut (45). : 41 mm : 100 N m (10 kgf m, 74 lbf ft) : 41 mm : 100 N m (10 kgf m, 74 lbf ft) NOTE: Tighten the hexagonal part of cap (46). W2-5-37