| Item | Part No. | Part Name | Qty | Serial No. |
| 20N-70-31100 | BOOM ASS'Y | 5501- | ||
| 1 | \6\ | BOOM | 5501- | |
| 2 | 07143-10304 | BUSHING | 5501- | |
| 3 | 07145-00035 | SEAL,DUST | 5501- | |
| 4 | 20R-70-11270 | SPACER¤ 1.0MM | 5501- | |
| 5 | 20N-70-11230 | PIN | 5501- | |
| 6 | 07020-00000 | FITTING,GREASE | 5501- | |
| 7 | 01010-51225 | BOLT | 5501- | |
| 8 | 01643-31232 | WASHER | 5501- | |
| 9 | 20N-70-31120 | PIN | 5501- | |
| 10 | 07020-00000 | FITTING,GREASE | 5501- | |
| 11 | 01010-51225 | BOLT | 5501- | |
| 12 | 01643-31232 | WASHER | 5501- |