STRUCTURE, FUNCTION, & MAINTENANCE STANDARD CONTROL VALVE 12 (4/9) 1. Spool (Arm) 2. Spool (Right travel) 3. Spool (Swing) 4. Spool (Boom) 5. Spool (Left travel) 6. Spool (Bucket) 7. Spool (Service) 8. Unload valve 9. Main relief valve 10. Spool return spring Unit: mm PC210/240-7K 10-57 No.
Check item Criteria Remedy 11 Free Spool return spring sid 5 Standard size Repair limit If damaged or deformed, replace spring length x Out- Installed Instal e diameter length loa led Free Installed d length load 416.5 4.2 x 34.8 51.2 {42.5 N 333.2 N — kg} {34 kg} 12 Spool return spring 5 429.9 4.6 x 34.8 51.2 {43.9 N 336.1 N — kg} {34.3 kg} 13 Spool return spring 5 393 4.5 x 34.8 51.2 {40.1 N 314.6 N — kg} {32.1 kg}