| Item | Part No. | Part Name | Qty | Serial No. |
| 21U-70-25500 | BOOM ASS'Y,1ST | 7001- | ||
| 1 | \6\ | BOOM | 7001- | |
| 2 | 21U-70-25520 | SEAT (WELDED) | 7001- | |
| 3 | 21U-70-25530 | BAR (WELDED) | 7001- | |
| 4 | 20C-70-11140 | BUSHING | 7001- | |
| 5 | 07145-00040 | SEAL,DUST | 7001- | |
| 6 | 07020-00675 | FITTING,GREASE | 7001- | |
| 21U-70-25900 | BOOM ASS'Y,2ND | 7001- | ||
| 7 | \6\ | BOOM | 7001- | |
| 8 | 21U-70-25550 | BAR (WELDED) | 7001- | |
| 9 | 21U-60-21230 | COLLAR | 7001- | |
| 10 | 21U-70-21240 | COLLAR | 7001- | |
| 11 | 21U-70-21220 | BUSHING | 7001- | |
| 12 | 07145-00055 | SEAL,DUST | 7001- | |
| 13 | 21U-70-21320 | BOOM,3RD | 7001- |