| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | 20U-70-00423 | ARM ASS'Y | 1019- | |
| 20U-70-00422 | ARM ASS'Y | 1001-1018 | ||
| \6\ | ARM | 1019- | ||
| \6\ | ARM | 1001-1018 | ||
| 2 | 20T-70-81140 | BUSHING | 1001- | |
| 3 | 20T-70-25740 | BUSHING | 1001- | |
| 4 | 07020-00675 | FITTING,GREASE | 1001- | |
| 5 | 21W-70-21380 | CUSHION | 1001- | |
| 6 | 20U-70-21311 | PLATE | 1001- | |
| 7 | 01010-81020 | BOLT | 1001- | |
| 8 | 01643-31032 | WASHER | 1001- | |
| 9 | 07145-00050 | SEAL,DUST | 1001- | |
| 10 | 07145-00045 | SEAL,DUST | 1001- | |
| 11 | 20T-70-71571 | PIN | 1001- | |
| 12 | 04082-00212 | LOCK | 1001- | |
| 13 | 01010-81230 | BOLT | 1001- | |
| 14 | 01643-31232 | WASHER | 1001- | |
| 15 | 21W-70-21440 | SHIM¤ 3.0MM | 1001- | |
| 16 | 20T-70-81750 | SPACER¤ 0.5MM | 1001- | |
| 17 | 20T-70-81730 | SPACER¤ 1.0MM | 1001- | |
| 18 | 20S-70-71571 | PIN | 1001- | |
| 19 | 04082-00212 | LOCK | 1001- | |
| 20 | 01010-81230 | BOLT | 1001- | |
| 21 | 01643-31232 | WASHER | 1001- | |
| 22 | 20U-70-21780 | SHIM¤ 2.5MM | 1001- | |
| 23 | 20T-70-81710 | SPACER¤ 1.0MM | 1001- |