| Item | Part No. | Part Name | Qty | Serial No. |
| VALVE ASSEMBLY - TWO-SPOOL(SEE FIG. Y1660-01A0) | A51001-UP- | |||
| 702-21-04170 | VALVE ASSEMBLY, PILOT | A51001-UP- | ||
| 1 | (NSS) | SLEEVE | A51001-UP- | |
| 2 | 07000-12020 | O-RING | A51001-UP- | |
| 3 | 07001-02020 | RING, BACK-UP | A51001-UP- | |
| 4 | 700-13-31161 | O-RING | A51001-UP- | |
| 5 | (NSS) | RETAINER | A51001-UP- | |
| 6 | 07002-03034 | O-RING | A51001-UP- | |
| 7 | (NSS) | POPPET | A51001-UP- | |
| 8 | (NSS) | PISTON | A51001-UP- | |
| 9 | (NSS) | SPRING | A51001-UP- | |
| 10 | (NSS) | SCREW | A51001-UP- | |
| 11 | (NSS) | O-RING | A51001-UP- | |
| 12 | (NSS) | NUT | A51001-UP- | |
| 13 | (NSS) | PISTON | A51001-UP- | |
| 14 | 700-81-11222 | BOLT | A51001-UP- | |
| 15 | 700-92-11770 | BOLT | A51001-UP- | |
| 16 | 01643-31232 | WASHER | A51001-UP- |
