| Item | Part No. | Part Name | Qty | Serial No. |
| 451-633 | CONTROL VALVE | 7001- | ||
| THIS ASSEMBLY CONSISTS OF ALL PARTS SHOWN IN FIGS.Y1660-01A0A T0 Y1660-20A0A . | ||||
| 451-285 | CASE SUB ASS'Y | 7001- | ||
| 1 | CASE,SPRING | 7001- | ||
| 2 | 453-601 | O-RING | 7001- | |
| 3 | PLUG | 7001- | ||
| 4 | 453-559 | O-RING | 7001- | |
| 5 | SEAT | 7001- | ||
| 6 | BALL | 7001- | ||
| 7 | 453-586 | O-RING | 7001- |