| Item | Part No. | Part Name | Qty | Serial No. |
| 451-645 | CONTROL VALVE | 6001- | ||
| THIS ASSEMBLY CONSISTS OF ALL PARTS SHOWN IN FIGS.Y1664-01A0 T0 Y1664-21A0. | ||||
| 451-281 | CASE SUB ASS'Y | 6001- | ||
| 1 | 451-263 | CASE,SPRING | 6001- | |
| 2 | 453-878 | BALL | 6001- | |
| 3 | 450-723 | PLUG | 6001- | |
| 4 | 453-559 | O-RING | 6001- | |
| 5 | 453-711 | O-RING | 6001- |