| Item | Part No. | Part Name | Qty | Serial No. |
| 451-631 | CONTROL VALVE | 4001- | ||
| THIS ASSEMBLY CONSISTS OF ALL PARTS SHOWN IN FIGS.Y1664-01A0 T0 Y1664-09A0. | ||||
| 450-898 | VALVE ASS'Y,RELIEF | 4001- | ||
| 1 | SLEEVE | 4001- | ||
| 2 | POPPET | 4001- | ||
| 3 | SPRING | 4001- | ||
| 4 | SCREW | 4001- | ||
| 5 | O-RING | 4001- | ||
| 6 | NUT | 4001- | ||
| 7 | 453-583 | O-RING | 4001- | |
| 8 | 453-687 | O-RING | 4001- | |
| 9 | RING | 4001- | ||
| 10 | VALVE | 4001- | ||
| 11 | SPRING | 4001- |