| Item | Part No. | Part Name | Qty | Serial No. |
| | VALVE ASSEMBLY - TWO-SPOOL(SEE FIG. Y1660-01A0) | | A51001-UP- |
| 709-90-53200 | VALVE ASSEMBLY, RELIEF | | A51001-UP- |
| 1 | (NSS) | SLEEVE | | A51001-UP- |
| 2 | 700-92-11320 | O-RING | | A51001-UP- |
| 3 | 700-93-11330 | RING | | A51001-UP- |
| 4 | 07002-03634 | O-RING | | A51001-UP- |
| 5 | (NSS) | PLUG | | A51001-UP- |
| 6 | (NSS) | VALVE | | A51001-UP- |
| 7 | (NSS) | SPRING | | A51001-UP- |
| 8 | (NSS) | SEAT | | A51001-UP- |
| 9 | (NSS) | O-RING | | A51001-UP- |
| 10 | (NSS) | RING, BACK-UP | | A51001-UP- |
| 11 | (NSS) | SPACER | | A51001-UP- |
| 12 | (NSS) | POPPET | | A51001-UP- |
| 13 | (NSS) | SPRING | | A51001-UP- |
| 14 | (NSS) | RETAINER | | A51001-UP- |
| 15 | (NSS) | HOLDER | | A51001-UP- |
| 16 | (NSS) | O-RING | | A51001-UP- |
| 17 | (NSS) | NUT | | A51001-UP- |
| 18 | (NSS) | SCREW | | A51001-UP- |
| 19 | (NSS) | WASHER | | A51001-UP- |
| 20 | (NSS) | NUT | | A51001-UP- |
| 21 | (NSS) | NUT | | A51001-UP- |
| 709-10-62101 | VALVE ASSEMBLY, SUCTION AND SAFETY | | A51001-UP- |
| 22 | (NSS) | SLEEVE | | A51001-UP- |
| 23 | 07002-03634 | O-RING | | A51001-UP- |
| 24 | (NSS) | VALVE | | A51001-UP- |
| 25 | (NSS) | SEAL | | A51001-UP- |
| 26 | (NSS) | POPPET | | A51001-UP- |
| 27 | (NSS) | SPRING | | A51001-UP- |
| 28 | (NSS) | PISTON | | A51001-UP- |
| 29 | (NSS) | O-RING | | A51001-UP- |
| 30 | (NSS) | RING, BACK-UP | | A51001-UP- |
| 31 | (NSS) | O-RING | | A51001-UP- |
| 32 | (NSS) | SEAL | | A51001-UP- |
| 33 | (NSS) | NUT | | A51001-UP- |
| 34 | (NSS) | SPRING | | A51001-UP- |
| 700-90-74001 | VALVE ASSEMBLY, SUCTION | | A51001-UP- |
| 35 | (NSS) | SLEEVE | | A51001-UP- |
| 36 | 07002-03634 | O-RING | | A51001-UP- |
| 37 | 700-90-62211 | VALVE | | A51001-UP- |
| 38 | 700-90-61281 | SEAL | | A51001-UP- |
| 39 | 700-90-61170 | SPRING | | A51001-UP- |
| 709-10-62500 | VALVE ASSEMBLY, SUCTION AND SAFETY | | A51001-UP- |
| 40 | (NSS) | SLEEVE | | A51001-UP- |
| 41 | 07002-03634 | O-RING | | A51001-UP- |
| 42 | (NSS) | SEAL | | A51001-UP- |
| 43 | (NSS) | POPPET | | A51001-UP- |
| 44 | (NSS) | SPRING | | A51001-UP- |
| 45 | (NSS) | PISTON | | A51001-UP- |
| 46 | 07000-12016 | O-RING | | A51001-UP- |
| 47 | 07001-02016 | RING, BACK-UP | | A51001-UP- |
| 48 | (NSS) | O-RING | | A51001-UP- |
| 49 | (NSS) | SEAL | | A51001-UP- |
| 50 | 700-90-61261 | NUT | | A51001-UP- |
| 51 | 700-90-61170 | SPRING | | A51001-UP- |
| 52 | (NSS) | VALVE | | A51001-UP- |
