| Item | Part No. | Part Name | Qty | Serial No. |
| 20U-973-0051 | ARM ASS'Y | 12800- | ||
| 20U-973-0050 | ARM ASS'Y | 8001-12799 | ||
| 1 | \6\ | ARM | 8001- | |
| 2 | 20T-70-81140 | BUSHING | 12800- | |
| 20T-70-71140 | BUSHING | 8001-12799 | ||
| 3 | 20T-70-25740 | BUSHING | 8001- | |
| 4 | 07020-00000 | FITTING,GREASE | 8001- | |
| 5 | 20U-70-27220 | BAR | 8001- | |
| 6 | 01011-81030 | BOLT | 8001- | |
| 7 | 01643-31032 | WASHER | 8001- | |
| 8 | 07145-00050 | SEAL,DUST | 8001- | |
| 9 | 07145-00045 | SEAL,DUST | 8001- | |
| 10 | 20T-70-71230 | PIN | 8001- | |
| 11 | 04082-00212 | LOCK | 8001- | |
| 12 | 01010-81230 | BOLT | 8001- | |
| 13 | 01643-31232 | WASHER | 8001- | |
| 14 | 20U-70-21780 | SHIM¤ 2.5MM | 8001- | |
| 15 | 07020-00000 | FITTING,GREASE | 8001- | |
| 16 | 20S-70-71571 | PIN | 8001- | |
| 17 | 04082-00212 | LOCK | 8001- | |
| 18 | 01010-81230 | BOLT | 8001- | |
| 19 | 01643-31232 | WASHER | 8001- | |
| 20 | 20U-70-21780 | SHIM¤ 2.5MM | 8001- | |
| 21 | 20T-70-19130 | SPACER¤ 1.0MM | 12800- |