| Item | Part No. | Part Name | Qty | Serial No. |
| 20C-70-21100 | BOOM ASS'Y,1ST | 3001- | ||
| 1 | \6\ | BOOM | 3001- | |
| 2 | 20C-70-11140 | BUSHING | 3001- | |
| 3 | 07145-00040 | SEAL,DUST | 3001- | |
| 4 | 07020-00675 | FITTING,GREASE | 3001- | |
| 20C-70-21201 | BOOM ASS'Y,2ND | 3618- | ||
| 5 | \6\ | BOOM | 3618- | |
| 6 | 20C-70-11280 | COLLAR | 3001- | |
| 7 | 20C-70-11290 | COLLAR | 3001- | |
| 8 | 20C-70-11260 | BUSHING | 3001- | |
| 9 | 20C-70-11270 | BUSHING | 3001- | |
| 10 | 07145-00050 | SEAL,DUST | 3001- | |
| 11 | 07145-00045 | SEAL,DUST | 3001- | |
| 12 | 20C-70-21321 | BOOM,3RD | 3001- |