| Item | Part No. | Part Name | Qty | Serial No. |
| 154-30-01011 | Idler Assembly | 12256- | ||
| 1 | Idler | 12256- | ||
| 2 | 154-30-74120 | Shaft | 12256- | |
| 3 | 07000-12060 | O-ring | 12256- | |
| 4 | 07052-31624 | Plug | 12256- | |
| 5 | 154-30-74130 | Bushing | 12256- | |
| 195-30-00302 | Floating Seal Assembly | 12256- | ||
| 6 | Seal | 12256- | ||
| 7 | O-ring | 12256- | ||
| 8 | 154-30-72731 | Support, L.H. | 12256- | |
| 9 | 154-30-72741 | Support, R.H. | 12256- | |
| 154-30-72653 | Guide Assembly | 12256- | ||
| 10 | Guide | 12256- | ||
| 11 | 154-30-71421 | Plate, Welded | 12256- | |
| 12 | 154-30-71491 | Plate, Welded | 12256- | |
| 13 | 154-30-12650 | Bolt | 12256- | |
| 14 | 175-30-23180 | Nut | 12256- | |
| 15 | 22W-43-17320 | Washer | 12256- | |
| 16 | 154-30-72670 | Plate | 12256- | |
| 17 | 154-30-12660 | Bolt | 12256- | |
| 18 | 01643-31645 | Washer | 12256- | |
| 19 | 154-30-12680 | Shim, T=1.0mm | 12256- | |
| 20 | 154-30-12690 | Shim, T=2.0mm | 12256- | |
| 21 | 154-30-72610 | Shim, T=1.0mm | 12256- | |
| 22 | 154-30-72620 | Shim, T=0.5mm | 12256- | |
| 23 | 01011-82030 | Bolt | 12256- | |
| 24 | 01643-32060 | Washer | 12256- |