UPPERSTRUCTURE / Control Valve Assemble Control Valve (4-Spoo Housing Side) Assemble Bypass Shut-Out Valve 1. Install spool (33) and spring (34) to housing (38). 2. Install O-ring (32) to cap (31). Install cap (31) to housing (38). Assemble Boom Flow Rate Control Valve 7. Install poppet (50), check valve (49), spring (48) and piston (47) to housing (38). 8. Install O-ring (43) to cap (44). Install spool (40), guide (41), spring (42) and cap (44) to cover (45). : 250 N m (25.5 kgf m, 185 lbf ft) Assemble Arm Flow Rate Control Valve 3. Install poppet (53), check valve (49), spring (48) and piston (47) to housing (38). 4. Install O-ring (43) to cap (44).
Install spool (52), guide (41), spring (51) and cap (44) to cover (45). : 46 mm : 30 mm : 60 N m (6.1 kgf m, 44 lbf ft) 9. Install O-ring (8) to cap (19). Install check valve (17), spring (39) and cap (19) to cover (45). : 5mm : 20 N m (2.0 kgf m, 15 lbf ft) 10. Install O-rings (46, 8) to cover (45). Install cover (45) to housing (38) with socket bolts (10) (4 used). : 30 mm : 60 N m (6.1 kgf m, 44 lbf ft) 5. Install O-ring (8) to cap (19). Install check valve (17), spring (39) and cap (19) to cover (45). : 12 mm : 180 N m (18.3 kgf m, 130 lbf ft) : 5 mm : 20 N m (2.0 kgf m, 15 lbf ft) 6. Install O-rings (46, 8) to cover (45).
Install cover (45) to housing (38) with socket bolts (10) (4 used). : 12 mm : 180 N m (18.3 kgf m, 130 lbf ft) W2-5-13