| Item | Part No. | Part Name | Qty | Serial No. |
| 20T-30-00112 | IDLER ASS'Y | 12800- | ||
| 1 | 20T-30-72112 | IDLER | 12800- | |
| 2 | 20T-30-11190 | BUSHING | 12800- | |
| 3 | 20T-30-72120 | SUPPORT | 12800- | |
| 4 | 20T-30-12191 | SHAFT | 12800- | |
| 5 | 07000-03028 | O-RING | 12800- | |
| 140-30-00141 | FLOATING SEAL ASS'Y | 12800- | ||
| 6 | \6\ | RING,SEAL | 12800- | |
| 7 | \6\ | O-RING | 12800- | |
| 8 | 01090-51045 | BOLT | 12800- | |
| 9 | 01643-31032 | WASHER | 12800- | |
| 10 | 01010-81260 | BOLT | 12800- | |
| 11 | 01602-21236 | WASHER,SPRING | 14993- | |
| 12 | 20T-30-82181 | PLATE | 14993- |