| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | 723-57-18400 | VALVE ASSEMBLY, 7-SPOOL | H50051- | |
| (FOR INNER PARTS SEE FIGS. Y1662-01A0 TO Y1662-09A0) | ||||
| 723-58-18400 | VALVE ASSEMBLY, 8-SPOOL, ONE-PIECE BOOM | H50051- | ||
| (FOR INNER PARTS SEE FIGS. Y1664-01A0 TO Y1664-09A0) | ||||
| 723-58-18300 | VALVE ASSEMBLY, 8-SPOOL, TWO-PIECE BOOM | H50051- | ||
| (FOR INNER PARTS SEE FIGS. Y1664-11A0 TO Y1664-19A0) | ||||
| 723-59-18300 | VALVE ASSEMBLY, 9-SPOOL | H50051- | ||
| (FOR INNER PARTS SEE FIGS. Y1666-01A0 TO Y1666-09A0) | ||||
| 2 | 20E-62-31450 | BRACKET | H50051- | |
| 3 | 01010-81645 | BOLT | H50051- | |
| 4 | 01643-31645 | WASHER | H50051- | |
| 5 | 203-62-61572 | PLATE | H50051- | |
| 6 | 01011-81600 | BOLT | H50051- | |
| 7 | 01643-31645 | WASHER | H50051- | |
| 8 | 203-54-21110 | CUSHION | H50051- | |
| 9 | 203-62-61581 | SPACER | H50051- | |
| 10 | 07000-13025 | O-RING | H50051- | |
| 11 | 01010-81645 | BOLT | H50051- | |
| 12 | 01643-31645 | WASHER | H50051- | |
| 13 | 07049-01012 | PLUG | H50051- | |
| 14 | 203-62-61511 | ELBOW | H50051- | |
| 15 | 07002-11823 | O-RING | H50051- | |
| 16 | 7861-93-1811 | SENSOR,PRESSURE | H50051- |