| Item | Part No. | Part Name | Qty | Serial No. |
| 21M-70-K1010 | BOOM ASS'Y | 10138- | ||
| 1 | \6\ | BOOM | 10138- | |
| 2 | 21M-62-17440 | CLAMP (WELDED) | 10138- | |
| 3 | 209-70-57170 | SEAT (WELDED) | 10138- | |
| 4 | 21M-62-17211 | BRACKET (WELDED) | 10138- | |
| 5 | 21M-62-17221 | BRACKET (WELDED) | 10138- | |
| 6 | 21M-62-17270 | BRACKET (WELDED) | 10138- | |
| 7 | 21M-62-17281 | BRACKET (WELDED) | 10138- | |
| 8 | 21M-62-17291 | CLAMP (WELDED) | 10138- | |
| 9 | 21M-62-17320 | BRACKET (WELDED) | 10138- | |
| 10 | 21M-62-17360 | BRACKET (WELDED) | 10138- | |
| 11 | 21M-62-17230 | SEAT | 10138- | |
| 12 | 205-62-54622 | SEAT | 10138- | |
| 13 | 205-62-73430 | SEAT | 10138- | |
| 14 | 209-62-58520 | SEAT | 10138- | |
| 15 | 21M-70-11271 | BUSHING | 10138- | |
| 16 | 209-72-11261 | SEAL | 10138- | |
| 17 | 21M-70-11240 | PIN | 10138- | |
| 18 | 20Y-70-11190 | PLATE | 10138- | |
| 19 | 01010-81645 | BOLT | 10138- | |
| 20 | 01643-31645 | WASHER | 10138- |