| Item | Part No. | Part Name | Qty | Serial No. |
| 21X-70-00121 | BOOM ASS'Y,1ST | 5974- | ||
| 21X-70-00120 | BOOM ASS'Y,1ST | 3001-5973 | ||
| 1 | \6\ | BOOM,1ST | 5974- | |
| \6\ | BOOM,1ST | 3001-5973 | ||
| 2 | 20S-70-71140 | BUSHING | 3001- | |
| 3 | 07020-00675 | FITTING,GREASE | 3001- | |
| 4 | 07145-00045 | SEAL,DUST | 3001- | |
| 21X-70-00220 | BOOM ASS'Y,2ND | 3001- | ||
| 5 | \6\ | BOOM,2ND | 3001- | |
| 6 | 20U-70-21490 | BUSHING | 3001- | |
| 7 | 07020-00000 | FITTING,GREASE | 3001- | |
| 8 | 07145-00070 | SEAL,DUST | 3001- | |
| 9 | 21X-70-21141 | BRACKET,3RD | 4483- | |
| 21X-70-21140 | BRACKET,3RD | 3001-4482 | ||
| 10 | 07020-00900 | FITTING,GREASE | 3001- | |
| 21X-70-00420 | LINK ASS'Y,SUB | 3001- | ||
| 11 | 21X-70-21251 | LINK SUB | 6250- | |
| 21X-70-21250 | LINK,SUB | 3001-6249 | ||
| 12 | 07144-10404 | BUSHING | 3001- | |
| 13 | 07145-00040 | SEAL,DUST | 3001- | |
| 14 | 07020-00675 | FITTING,GREASE | 3001- | |
| 15 | 07049-01012 | PLUG | 4483- |