| Item | Part No. | Part Name | Qty | Serial No. |
| (723-28-10401) | VALVE ASS'Y | 1001- | ||
| THIS ASSEMBLY CONSISTS OF ALL PARTS SHOWN IN FIGS.Y1664-01A0 T0 Y1664-08A0. | ||||
| 723-20-62201 | VALVE ASS'Y,RELIEF | 1001- | ||
| 1 | \6\ | SLEEVE | 1001- | |
| 2 | \6\ | VALVE | 1001- | |
| 3 | \6\ | POPPET | 1001- | |
| 4 | \6\ | SPRING | 1001- | |
| 5 | \6\ | SCREW | 1001- | |
| 6 | \6\ | SPRING | 1001- | |
| 7 | \6\ | RING | 1001- | |
| 8 | \6\ | NUT | 1001- | |
| 9 | 700-22-11410 | O-RING | 1001- | |
| 10 | 700-80-64220 | RING | 1001- | |
| 11 | 07002-02434 | O-RING | 1001- | |
| 12 | \6\ | O-RING | 1001- | |
| 723-20-70500 | VALVE ASS'Y | 1001- | ||
| 13 | \6\ | SLEEVE | 1001- | |
| 14 | \6\ | VALVE | 1001- | |
| 15 | \6\ | SPRING | 1001- | |
| 16 | \6\ | PLUG | 1001- | |
| 17 | \6\ | RING | 1001- | |
| 18 | \6\ | O-RING | 1001- | |
| 19 | 07002-12434 | O-RING | 1001- | |
| 20 | 07000-12016 | O-RING | 1001- | |
| 21 | 07001-02016 | RING,BACK-UP | 1001- | |
| 22 | 07000-11009 | O-RING | 1001- | |
| 23 | 07001-01009 | RING,BACK-UP | 1001- |