UPPERSTRUCTURE / Control Valve Disassemble Overload Relief Valve-2 IMPORTANT: Do not disassemble the overload relief valve. When the overload relief valve is disassembled, pressure must be adjusted. Refer to the Operational Performance Test section / TROUBLESHOOTING in the separated volume, T/M.) 8. Rotate sleeve (27) and remove the overload relief valve assembly (1 to 30) from housing (64). : 41 mm IMPORTANT: Put the matching marks on sleeves (27, 15). Record the rotation number of adjusting sleeve (15). 9. Clamp sleeve (27) into a vise. Loosen sleeve (15). Remove the sleeve (15) assembly (1 to 14) from sleeve (27). : 36 mm 10.
Remove spring seat (9), spring (10), pilot poppet (11), pilot seat (19), springs (21, 20), piston (22) and main poppet (26) from sleeve (27). NOTE: Push and remove main poppet (26) from the housing (64) side in sleeve (27) by using a round bar. 11. Remove spring (8) and poppet (7) from sleeve (15). IMPORTANT: Put the matching marks on sleeves (4, 15) and lock nut (12). Record the rotation number of sleeve (4). 12. Clamp sleeve (15) into a vise. Loosen lock nut (12). Remove sleeve (4) and lock nut (12) from sleeve (15). : 36 mm 13. Clamp sleeve (4) into a vise. Remove cap (1). Remove piston (3) from sleeve (4). NOTE: Push a round bar (Dia.:
3 mm) into the poppet (7) hole on sleeve (4) and remove piston (3). : 27 mm W2-5-45