| Item | Part No. | Part Name | Qty | Serial No. |
| 21T-30-00550 | TRACK ROLLER ASS'Y | 20001- | ||
| 1 | 21T-30-31110 | ROLLER | 20001- | |
| 2 | 21T-30-31121 | BUSHING | 20001- | |
| 3 | 21T-30-31130 | SHAFT | 20001- | |
| 4 | 21T-30-31140 | COLLAR | 20001- | |
| 5 | 21T-30-31170 | BOLT | 20001- | |
| 6 | 01803-12228 | NUT | 20001- | |
| 7 | 01643-32260 | WASHER | 20001- | |
| 8 | 07000-55135 | O-RING | 20001- | |
| 9 | 07052-31624 | PLUG | 20001- | |
| 21T-30-00180 | FLOATING SEAL ASS'Y | 20001- | ||
| 10 | \6\ | RING, SEAL | 20001- | |
| 11 | \6\ | O-RING | 20001- | |
| 12 | 156-70-12250 | BOLT | 20001- | |
| 13 | 01643-33080 | WASHER | 20001- |