| Item | Part No. | Part Name | Qty | Serial No. |
| 21M-30-00301 | FRONT IDLER ASS'Y | 30016- | ||
| 1 | 21M-30-17100 | IDLER | 30001- | |
| 2 | 21M-30-17110 | BUSHING | 30001- | |
| 3 | 21M-30-17121 | SHAFT | 30016- | |
| 4 | 209-30-63150 | PLUG | 30001- | |
| 5 | 07000-15100 | O-RING | 30028- | |
| 07000-05100 | O-RING | 30001-30027 | ||
| 21T-30-00110 | FLOATING SEAL ASS'Y | 30001- | ||
| 6 | \6\ | RING | 30001- | |
| 7 | \6\ | O-RING | 30001- | |
| 8 | 21M-30-17130 | SUPPORT | 30001- | |
| 9 | 21M-30-17170 | PIN | 30001- |