| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | 421-46-25130 | COUNTERWEIGHT | A31001-UP- | |
| 2 | 419-09-11130 | BOLT | A31001-UP- | |
| 3 | 22X-22-11280 | WASHER | A31001-UP- | |
| 4 | 421-46-A1210 | PIN | A31001-UP- | |
| 5 | 04025-01000 | PIN, SPRING | A31001-UP- | |
| 6 | 426-46-12280 | PIN, LYNCH | A31001-UP- | |
| 7 | 421-975-2110 | COUNTERWEIGHT | A31001-UP- | |
| 8 | 421-975-2170 | SPACER | A31001-UP- | |
| 9 | 419-975-2140 | BOLT | A31001-UP- |