| Item | Part No. | Part Name | Qty | Serial No. |
| G-1 | (\8\20T-973-X240) | BOOM GROUP,(FOR ATTACHMENT) | 8501- | |
| ==================== | ||||
| 1 | 20T-973-4110 | BOOM | 8501- | |
| 2 | 20T-70-25720 | BUSHING | 8501- | |
| 3 | 07145-00050 | SEAL | 8501- | |
| ==================== | ||||
| G-2 | (\8\20T-973-X220) | BOOM PIPING GROUP,(FOR ATTACHMENT) | 8501- | |
| ==================== | ||||
| 4 | 20T-973-4210 | HOSE | 8501- | |
| 5 | 20T-973-4230 | TUBE,R.H. | 8501- | |
| 6 | 20T-973-4220 | TUBE,L.H. | 8501- | |
| 7 | 20T-62-56180 | HOSE | 8501- | |
| 8 | 201-62-21890 | CLAMP | 8501- | |
| 9 | 01010-51020 | BOLT | 8501- | |
| 10 | 01602-21030 | WASHER,SPRING | 8501- | |
| ==================== |