| Item | Part No. | Part Name | Qty | Serial No. |
| 723-18-11504 | VALVE ASS'Y | ....- | ||
| 723-18-11503 | VALVE ASS'Y | ...-.... | ||
| 723-18-11502 | VALVE ASS'Y | ..-... | ||
| 723-18-11501 | VALVE ASS'Y | .-.. | ||
| 723-18-11500 | VALVE ASS'Y | 10001-. | ||
| THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1660-01A0 TO Y1660-10A0. | ||||
| 1 | \6\ | BLOCK | 10001- | |
| 2 | \6\ | BODY,VALVE | 10001- | |
| 3 | \6\ | BLOCK,VALVE | 10001- | |
| 4 | \6\ | BLOCK,VALVE | 10001- | |
| 5 | \6\ | BLOCK,VALVE | 10001- | |
| 6 | \6\ | BLOCK,VALVE | 10001- | |
| 7 | \6\ | BLOCK,VALVE | 10001- | |
| 8 | \6\ | BLOCK,VALVE | 10001- | |
| 9 | \6\ | BLOCK,VALVE | 10001- |