| Item | Part No. | Part Name | Qty | Serial No. |
| 20Y-30-00016 | TRACK ROLLER ASS'Y | B20001-B20859 | ||
| 1 | 20Y-30-16411 | ROLLER | B20001-B20859 | |
| 2 | 22U-30-11450 | BUSHING | B20001-@ | |
| 3 | 22U-30-11420 | SHAFT | B20001-@ | |
| 4 | 205-30-76260 | O-RING | B20001-@ | |
| 20Y-30-00430 | FLOATING SEAL ASS'Y | B20001-B20859 | ||
| 5 | \6\ | SEAL | B20001-B20859 | |
| 6 | \6\ | O-RING | B20001-B20859 | |
| 7 | 22U-30-11430 | COLLAR | B20001-@ | |
| 8 | 20Y-30-16330 | PLUG | B20001-@ | |
| 9 | 22U-30-11440 | COLLAR | B20001-@ | |
| 10 | 20Y-30-16170 | PIN | B20001-@ | |
| 11 | 20Y-30-11340 | BOLT | B20001-@ | |
| 12 | 01643-31845 | WASHER | B20001-@ |