| Item | Part No. | Part Name | Qty | Serial No. |
| 20Y-973-0040 | ARM ASS'Y | 30916-30979 | ||
| 1 | \6\ | ARM | 30916-@ | |
| 2 | 20Y-70-22G40 | SEAT (WELDED) | 30916-@ | |
| 3 | 20Y-970-3570 | BRACKET (WELDED) | 30916-@ | |
| 4 | 20Y-970-3560 | BRACKET (WELDED) | 30916-@ | |
| 5 | 20Y-70-21650 | BUSHING | 30916-30979 | |
| 6 | 21K-70-12170 | BUSHING | 30916-@ | |
| 7 | 205-70-72130 | BUSHING | 30916-@ | |
| 8 | 07020-00900 | FITTING | 30916-@ | |
| 9 | 07020-00000 | FITTING | 30916-@ | |
| 10 | 07145-00090 | SEAL | 30916-@ | |
| 11 | 21K-70-12180 | SEAL | 30001-@ | |
| 12 | 205-70-62150 | SEAL | 30001-@ | |
| 13 | 20Y-70-11180 | PIN | 30001-@ | |
| 14 | 205-70-66580 | PLATE | 30001-@ | |
| 15 | 01010-51230 | BOLT | 30001-30979 | |
| 16 | 01643-31232 | WASHER | 30001-@ | |
| 17 | 205-70-71190 | PIN | 30001-@ | |
| 18 | 205-70-66580 | PLATE | 30001-@ | |
| 19 | 01010-51230 | BOLT | 30001-30979 | |
| 20 | 01643-31232 | WASHER | 30001-@ | |
| 21 | (\8\206-63-X7290) | BUCKET CYLINDER G.,(SEE FIG.Y1620-41A0) | 30916-30979 |