| Item | Part No. | Part Name | Qty | Serial No. |
| 723-48-21101 | VALVE ASSEMBLY | H55051- | ||
| THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS. Y1664-01A0 TO Y1664-20A0 | ||||
| 723-40-71301 | VALVE ASSEMBLY | H55051- | ||
| THIS ASSEMBLY CONSISTS OF ALL PARTS SHOWN IN FIGS. Y1664-13A0 AND Y1664-14A0 | ||||
| 1 | \6\ | BODY | H55051- | |
| 2 | \6\ | SPOOL | H55051- | |
| 3 | 723-40-71330 | RETAINER | H55051- | |
| 4 | 723-40-71340 | SPRING | H55051- | |
| 5 | 01252-60816 | BOLT | H55051- | |
| 6 | 723-46-15111 | CASE | H55051- | |
| 7 | 723-40-71350 | RETAINER | H55051- | |
| 8 | 07430-71380 | O-RING | H55051- | |
| 9 | 01252-60820 | BOLT | H55051- | |
| 10 | \6\ | SPOOL | H55051- | |
| 11 | 723-40-71440 | SPRING | H55051- | |
| 12 | \6\ | PLUG | H55051- | |
| 13 | 709-74-91860 | PLUG | H55051- | |
| 14 | 07002-12434 | O-RING | H55051- |