| Item | Part No. | Part Name | Qty | Serial No. |
| (723-24-10803) | VALVE ASS'Y | 1181- | ||
| (723-24-10801) | VALVE ASS'Y | 1166-1180 | ||
| (723-24-10800) | VALVE ASS'Y | 1088-1165 | ||
| (723-24-10601) | VALVE ASS'Y | 1001-1087 | ||
| THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1664-01A0 TO Y1664-12A0. | ||||
| 1 | 723-20-63200 | VALVE ASS'Y,RELIEF | 1001- | |
| 2 | 700-22-11410 | O-RING | 1001- | |
| 3 | 700-80-64220 | RING | 1001- | |
| 4 | 07002-12434 | O-RING | 1001- |