| Item | Part No. | Part Name | Qty | Serial No. |
| (363-17-31101) | PUMP ASS'Y,(A4V40DA-986-0) | | 10991-12550 |
| (363-17-31101) | PUMP ASS'Y,(A4V40DA-991-2) | | 10878-10990 |
| (363-17-31101) | PUMP ASS'Y,(A4V40DA-991-1) | | 10659-10877 |
| (363-17-31101) | PUMP ASS'Y,(A4V40DA-991-0) | | 10001-10658 |
| | THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1610-01A0 TO Y1610-07A0. | | |
| | THE UCHIDA YUATSU KIKI PART NUMBER IS THAT UC IS REMOVED FROM KOMATSU PART NUMBER LISTED BELOW. | | |
| (UCB1141R9881-0) | PUMP ASS'Y,PISTON | | 10991-12550 |
| (UCB1141R0453-0) | PUMP ASS'Y,PISTON | | 10001-10990 |
| | THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1610-02A0 TO Y1610-06A0. | | |
| (\7\UC4100335859) | ROTARY ASS'Y | | 10001-12550 |
| 1 | (\7\UC4100366376) | ROTARY ASS'Y | | 10001-12550 |
| 2 | (\7\UC4100366385) | HANGER ASS'Y | | 10001-12550 |
| 3 | UC4100336999 | CASE ASS'Y,SEAL | | 10001-12550 |
| 4 | (\7\UC1704016281) | SHAFT | | 10001-12550 |
| 5 | (\7\UC1700802932) | FLANGE,BEARING | | 10001-12550 |
| 6 | (\7\UC1700762339) | LEVER | | 10001-12550 |
| 7 | (\7\UC1704018425) | PIN | | 10001-12550 |
| 8 | (\7\UC1701536856) | BEARING | | 10001-12550 |
| 9 | (\7\UC1701546817) | BEARING | | 10001-12550 |
| 10 | (\7\UC1302132008) | RING,SNAP | | 10001-12550 |
| 11 | 04065-06220 | RING | | 10001-12550 |
| 12 | UC1300254005 | O-RING | | 10001-12550 |
| 13 | 02892-03123 | O-RING | | 10001-12550 |
| 14 | (\7\UC1700867067) | SHIM, 0.3MM | | 10001-12550 |
| 14 | (\7\UC1700867076) | SHIM, 0.1MM | | 10001-12550 |
| 15 | (\7\UC1700864287) | SHIM, 0.3MM | | 10001-12550 |
| 15 | (\7\UC1700864278) | SHIM, 0.1MM | | 10001-12550 |
