| Item | Part No. | Part Name | Qty | Serial No. |
| 20R-63-02251 | BOOM CYLINDER ASS'Y | 1001- | ||
| 1 | 20R-63-57241 | CYLINDER | 1001- | |
| 2 | 07144-10405 | BUSHING | 1001- | |
| 3 | 07145-00045 | SEAL,DUST (K1) | 1001- | |
| 4 | 07020-00000 | FITTING,GREASE | 1001- | |
| 5 | 707-29-80230 | HEAD,CYLINDER | 1001- | |
| 6 | 07177-04530 | BUSHING | 1001- | |
| 7 | 707-51-45210 | PACKING,ROD (K1) | 1001- | |
| 8 | 112-63-15370 | SEAL,DUST (K1) | 1001- | |
| 9 | 07179-12057 | RING,SNAP | 1001- | |
| 10 | 07000-12075 | O-RING (K1) | 1001- | |
| 11 | 07146-02076 | RING,BACK-UP (K1) | 1001- | |
| 12 | 707-35-52750 | RING,BACK-UP (K1) | 1001- | |
| 13 | 07000-02080 | O-RING (K1) | 1001- | |
| 14 | 20R-63-57221 | ROD,PISTON | 1001- | |
| 15 | 07143-10404 | BUSHING | 1001- | |
| 16 | 07145-00040 | SEAL,DUST (K1) | 1001- | |
| 17 | 707-71-60520 | PLUNGER | 1001- | |
| 18 | 707-36-80230 | PISTON | 1001- | |
| 19 | 707-44-80180 | RING,PISTON (K1) | 1001- | |
| 20 | 07156-00810 | RING,WEAR (K1) | 1001- | |
| 21 | 01580-03024 | NUT | 1001- | |
| 22 | 20R-63-57271 | TUBE | 1001- | |
| 23 | 20R-63-57181 | TUBE | 1001- | |
| 24 | 01010-51020 | BOLT | 1001- | |
| 25 | 01643-31032 | WASHER | 1001- |