| Item | Part No. | Part Name | Qty | Serial No. |
| (723-28-50800) | CONTROL VALVE | 6501- | ||
| (723-28-50400) | CONTROL VALVE | 4001-6500 | ||
| THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1664-31A0 TO Y1664-55A0. | ||||
| 1 | 723-20-80100 | VALVE ASS'Y,SUCTION | 4001- | |
| 2 | 07002-12034 | O-RING | 4001- | |
| 3 | 723-10-80200 | VALVE ASS'Y,SUCTION | 4001- | |
| 4 | 07002-12034 | O-RING | 4001- |