| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | 707-01-0S640 | BOOM CYLINDER, ASSY. | 21D5220431- | |
| 2 | 721-58-70410 | PISTON ROD | 21D5220431- | |
| 3 | 707-76-60760 | BUSHING | 21D5220431- | |
| 4 | 01010-81670 | SCREW | 21D5220431- | |
| 5 | 01643-51645 | WASHER | 21D5220431- | |
| 6 | 01310-01216 | DOWEL | 21D5220431- | |
| 7 | 707-27-12330 | CYLINDER HEAD | 21D5220431- | |
| 8 | 721-36-12050 | PISTON | 21D5220431- | |
| 9 | 707-13-12570 | CYLINDER | 21D5220431- | |
| 10 | 707-88-28120 | COLLAR | 21D5220431- | |
| 11 | 07375-21035 | SCREW | 21D5220431- | |
| 12 | 707-71-34210 | THRUST WASHER | 21D5220431- | |
| 13 | 707-71-70780 | BUSHING | 21D5220431- | |
| 14 | 07179-12084 | RING, WEAR | 21D5220431- | |
| 15 | 707-52-90470 | PACKING ROD | 21D5220431- | |
| 16 | 707-75-70110 | RING, WEAR | 21D5220431- | |
| 17 | 707-44-12911 | PACKING ROD | 21D5220431- | |
| 18 | 707-99-43300 | KIT, GASKET | 21D5220431- | |
| 19 | \6\ | O-RING | 21D5220431- | |
| 20 | \6\ | RING | 21D5220431- | |
| 21 | \6\ | RING, WEAR | 21D5220431- | |
| 22 | \6\ | RING | 21D5220431- | |
| 23 | \6\ | GASKET | 21D5220431- | |
| 24 | \6\ | RING, WEAR | 21D5220431- | |
| 25 | \6\ | O-RING | 21D5220431- | |
| 26 | \6\ | GASKET | 21D5220431- | |
| 27 | \6\ | O-RING | 21D5220431- | |
| 28 | \6\ | GASKET | 21D5220431- | |
| 29 | \6\ | GASKET | 21D5220431- | |
| 30 | \6\ | GASKET | 21D5220431- | |
| 31 | 21D-09-89300 | FITTING, GREASE | 21D5220431- | |
| 32 | 21D-09-89140 | GREASE NIPPLE | 21D5220431- |