| Item | Part No. | Part Name | Qty | Serial No. |
| (709-91-12500) | VALVE ASS'Y | 1001- | ||
| THIS ASSEMBLY CONSISTS OF ALL PARTS SHOWN IN FIGS.Y1660-01A0 AND Y1660-02A0. | ||||
| 709-90-54200 | VALVE ASS'Y,RELIEF | 1001- | ||
| 1 | \6\ | SLEEVE | 1001- | |
| 2 | 702-13-51290 | O-RING | 1001- | |
| 3 | 700-93-11330 | RING,BACK-UP | 1001- | |
| 4 | 07002-23634 | O-RING | 1001- | |
| 5 | \6\ | PLUG | 1001- | |
| 6 | \6\ | VALVE | 1001- | |
| 7 | \6\ | SPRING | 1001- | |
| 8 | \6\ | SEAT | 1001- | |
| 9 | \6\ | O-RING | 1001- | |
| 10 | \6\ | RING,BACK-UP | 1001- | |
| 11 | \6\ | SPACER | 1001- | |
| 12 | \6\ | POPPET | 1001- | |
| 13 | \6\ | SPRING | 1001- | |
| 14 | \6\ | RETAINER | 1001- | |
| 15 | \6\ | HOLDER | 1001- | |
| 16 | \6\ | O-RING | 1001- | |
| 17 | \6\ | NUT | 1001- | |
| 18 | \6\ | SCREW | 1001- | |
| 19 | \6\ | O-RING | 1001- | |
| 20 | \6\ | NUT | 1001- |