| Item | Part No. | Part Name | Qty | Serial No. |
| 20Y-944-B080 | ARM ASSâY | B20001- | ||
| 1 | (\6\ 20Y-944-B130) | ARM | B20074- | |
| (\6\ 20Y-944-K350) | ARM | B20001-B20073 | ||
| 2 | 205-70-72180 | BUSHING | B20001- | |
| 3 | 21K-70-12170 | BUSHING | B20001- | |
| 4 | 205-70-72130 | BUSHING | B20001- | |
| 5 | 07020-00900 | FITTING | B20001- | |
| 6 | 07020-00000 | FITTING | B20001- | |
| 7 | 07145-00090 | SEAL | B20001- | |
| 8 | 20Y-70-23220 | SEAL | B20001- | |
| 9 | 205-70-62150 | SEAL | B20001- | |
| 10 | 20Y-70-11180 | PIN | B20001- | |
| 11 | 205-70-66580 | PLATE | B20001- | |
| 12 | 01010-81230 | BOLT | B20001- | |
| 13 | 01643-31232 | WASHER | B20001- | |
| 14 | 205-70-71190 | PIN | B20001- | |
| 15 | 205-70-66580 | PLATE | B20001- | |
| 16 | 01010-81230 | BOLT | B20001- | |
| 17 | 01643-31232 | WASHER | B20001- | |
| 18 | (\8\205-63-X3131) | BUCKET CYLINDER G.,(SEE FIG.Y1620-41A0) | B20001- | |
| 19 | 07378-10600 | HEAD | B20001- | |
| 20 | 07000-13025 | O-RING | B20001- | |
| 21 | 07371-30640 | FLANGE | B20001- | |
| 22 | 07372-21035 | BOLT | B20001- | |
| 23 | 01643-51032 | WASHER | B20001- |