| Item | Part No. | Part Name | Qty | Serial No. |
| 22L-943-3701 | Arm Assembly | 20509- | ||
| 1 | Arm | 20509- | ||
| 2 | 22F-70-32820 | Bushing | 20509- | |
| 3 | 22F-70-31630 | Bushing | 20509- | |
| 4 | 07145-00040 | Seal, Dust | 20509- | |
| 5 | 22L-70-21550 | Seal, Dust | 20509- | |
| 6 | 07020-00000 | Fitting, Grease | 20509- | |
| 7 | 21X-70-21280 | Grommet | 20509- | |
| 8 | 22L-70-21561 | Pin | 20509- | |
| 9 | 04082-00212 | Lock | 20509- | |
| 10 | 01010-81230 | Bolt | 20509- | |
| 11 | 01643-31232 | Washer | 20509- | |
| 12 | 20N-70-41270 | Spacer, T=1.0mm | 20509- | |
| 12 | 22K-70-11150 | Spacer, T=0.5mm | 20509- |