| Item | Part No. | Part Name | Qty | Serial No. |
| 1252 159 H91 | VALVE, DUAL COUNTERBALANCE | |||
| 1 | (NSS) | BLOCK, VALVE | ||
| 2 | 1257 986 H1 | CARTRIDGE, COUNTERBALANCE | ||
| 1257 988 H1 | KIT, SEAL | |||
| 3 | (NSS) | RING, BACKUP | ||
| 4 | (NSS) | O-RING | ||
| 5 | (NSS) | RING, BACKUP | ||
| 6 | (NSS) | RING, BACKUP | ||
| 7 | (NSS) | O-RING |