| Item | Part No. | Part Name | Qty | Serial No. |
| 6631-21-4031 | IDLER GEAR ASS'Y | 174428- | ||
| 1 | 6631-21-4321 | GEAR,IDLER | 174428- | |
| 2 | 6631-21-4371 | BUSHING | 174428- | |
| 3 | 6631-21-4311 | SHAFT,IDLER GEAR | 174428- | |
| 4 | 07000-62010 | O-RING (K4) | 174428- | |
| 5 | 07000-62015 | O-RING (K4) | 174428- | |
| 6 | 6631-21-4381 | BOLT | 174428- | |
| 8A | 6610-31-3331 | WASHER | 174428- | |
| 9 | 6632-21-4611 | SHAFT,PUMP DRIVE | 174428- | |
| 13 | 6631-21-4621 | GEAR | 174428- | |
| 14 | 04000-01235 | KEY | 174428- | |
| 15 | 6631-21-4650 | SPACER | 174428- | |
| 16 | 6632-21-4631 | CASE,BEARING | 174428- | |
| 17 | 06000-06209 | BEARING | 174428- | |
| 18 | 04065-08530 | RING,SNAP | 174428- | |
| 19 | 04064-04518 | RING,SNAP | 174428- | |
| 20 | 07000-62095 | O-RING (K4) | 174428- | |
| 21 | 6645-21-4140 | COVER | 174428- | |
| 22 | 07000-62075 | O-RING (K4) | 174428- | |
| 23 | 01010-31030 | BOLT | 174428- | |
| 24 | 01010-31025 | BOLT | 174428- | |
| 25 | 01602-01030 | WASHER,SPRING | 174428- | |
| 26 | 6631-21-4660 | CASE,BEARING | 174428- | |
| 27 | 06000-06208 | BEARING | 174428- | |
| 28 | 04064-04018 | RING,SNAP | 174428- | |
| 29 | 07000-63088 | O-RING (K4) | 174428- | |
| 30 | 07000-62075 | O-RING (K4) | 174428- | |
| 31 | 01010-31040 | BOLT | 174428- | |
| 32 | 01602-01030 | WASHER,SPRING | 174428- |