| Item | Part No. | Part Name | Qty | Serial No. |
| 723-18-17800 | Valve, Control | 20509-21000 | ||
| 1 | Spool | 20509-21000 | ||
| 2 | Spool | 20509-21000 | ||
| 3 | Spool | 20509-21000 | ||
| 4 | Spool | 20509-21000 | ||
| 5 | Spool | 20509-21000 | ||
| 6 | Spool | 20509-21000 | ||
| 7 | Spool | 20509-21000 | ||
| 8 | Spool | 20509-21000 | ||
| 9 | Spool | 20509-21000 |