| Item | Part No. | Part Name | Qty | Serial No. |
| 20M-30-31300 | TRACK ROLLER ASS'Y | 2501-3100 | ||
| 1 | 20M-30-31310 | ROLLER | 2501-@ | |
| 2 | 20M-30-31130 | BUSHING | 2501-@ | |
| 3 | 20M-30-11140 | COLLAR | 2501-3100 | |
| 110-30-00045 | FLOATING SEAL ASS'Y | 2501-@ | ||
| 4 | 101-30-00130 | SEAL RING ASS'Y | 2501-@ | |
| 4 | \6\ | RING | 2501-@ | |
| 5 | 101-30-00140 | O-RING ASS'Y | 2501-@ | |
| 5 | \6\ | O-RING | 2501-@ | |
| 6 | 20M-30-11530 | COLLAR | 2501-3100 | |
| 7 | 20M-30-31321 | SHAFT | 2501-@ | |
| 8 | 07000-02021 | O-RING | 2501-@ | |
| 9 | 20R-30-11270 | RING | 2501-@ |