| Item | Part No. | Part Name | Qty | Serial No. |
| 21W-973-0480 | ARM ASS'Y | 4001-5500 | ||
| 1 | \6\ | ARM (YELLOW) | 4001-5500 | |
| 2 | 202-973-6321 | BRACKET (WELDED) | 4001-@ | |
| 3 | 202-973-6331 | BRACKET (WELDED) | 4001-@ | |
| 4 | 21W-70-41360 | BUSHING | 4001-@ | |
| 5 | 20X-70-22140 | BUSHING | 4001-@ | |
| 6 | 21W-70-41620 | BUSHING | 4001-@ | |
| 7 | 07020-00000 | FITTING,GREASE | 4001-@ | |
| 8 | 07020-00900 | FITTING,GREASE | 4001-@ | |
| 9 | 21W-62-44230 | HOSE | 4001-@ | |
| 10 | 201-70-72230 | PIN | 4001-5500 | |
| 11 | 04082-00212 | LOCK | 4001-5500 | |
| 12 | 01010-81230 | BOLT | 4001-@ | |
| 13 | 01643-31232 | WASHER | 4001-@ | |
| 14 | 21Y-70-14770 | SPACER, 1.0MM | 4001-@ | |
| 15 | 07020-00000 | FITTING,GREASE | 4001-@ | |
| 16 | 201-70-72241 | PIN | 4001-@ | |
| 17 | 04082-00212 | LOCK | 4001-@ | |
| 18 | 01010-81230 | BOLT | 4001-@ | |
| 19 | 01643-31232 | WASHER | 4001-@ | |
| 20 | 22C-70-31510 | SPACER, 1.0MM | 4001-@ | |
| 21 | 07020-00000 | FITTING,GREASE | 4001-@ | |
| 22 | 07145-00060 | SEAL,DUST | 4001-@ | |
| 23 | 21W-70-41430 | SEAL,DUST | 4001-@ | |
| 24 | 130-09-12931 | SEAL,DUST | 4001-@ |