| Item | Part No. | Part Name | Qty | Serial No. |
| 723-23-10504 | VALVE ASS'Y | 1241- | ||
| 723-23-10503 | VALVE ASS'Y | 1224-1240 | ||
| 723-23-10502 | VALVE ASS'Y | 1201-1223 | ||
| 723-23-10501 | VALVE ASS'Y | 1001-1200 | ||
| THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1663-01A0 TO Y1663-04A0. | ||||
| 1 | \6\ | BLOCK | 1001- | |
| 2 | \6\ | BLOCK,VALVE | 1001- | |
| 3 | \6\ | BLOCK,VALVE | 1001- | |
| 4 | \6\ | BLOCK,VALVE | 1001- | |
| 5 | 723-26-21720 | COVER | 1001- | |
| 6 | 07000-12120 | O-RING | 1001- | |
| 7 | 723-26-15830 | O-RING | 1001- | |
| 8 | 723-26-15840 | O-RING | 1001- | |
| 9 | 07000-12020 | O-RING | 1001- | |
| 10 | 07000-11008 | O-RING | 1001- | |
| 11 | 700-25-11120 | BOLT | 1001- | |
| 12 | 01643-31032 | WASHER | 1001- |