| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | (21J-63-X2400) | CYLINDER GROUP,BOOM L.H. | 1201- | |
| (21J-63-X2202) | CYLINDER GROUP,BOOM L.H.(SEE FIG.Y1620-01A0) | 1001-1200 | ||
| 2 | (21J-63-X2410) | CYLINDER GROUP,BOOM R.H. | 1201- | |
| (21J-63-X2212) | CYLINDER GROUP,BOOM R.H.(SEE FIG.Y1620-01A0) | 1001-1200 |