| Item | Part No. | Part Name | Qty | Serial No. |
| (363-17-31402) | PUMP ASS'Y,(A4VG28DA-931-0) | | 21212- |
| | THIS ASSEMBLY CONSISTS OF ALL PARTS SHOWN IN FIGS.Y1610-02A0A T0 Y1610-06A0A . | | |
| | THE UCHIDA YUATSU KIKI PART NUMBER IS THAT UC IS REMOVED FROM KOMATSU PART NUMBER LISTED BELOW. | | |
| (UCBA041S9146-0) | PUMP ASS'Y,PISTON | | 21212- |
| | THIS ASSEMBLY CONSISTS OF ALL PARTS SHOWN IN FIGS.Y1610-02A0A T0 Y1610-06A0. | | |
| UC4704375889 | ROTARY ASS'Y | | 21212- |
| 1 | UC4704354498 | CYLINDER ASS'Y | | 21212- |
| 2 | UC4704315415 | PISTON ASS'Y | | 21212- |
| 3 | UC4704355088 | HANGER ASS'Y | | 21212- |
| 4 | UC1704323552 | SPRING | | 21212- |
| 5 | UC1704152653 | SHAFT | | 21212- |
| 6 | UC1704198246 | CASE,SEAL | | 21212- |
| 7 | UC1704139201 | PIN | | 21212- |
| 8 | UC1704321419 | RETAINER | | 21212- |
| 9 | UC1704313427 | GUIDE | | 21212- |
| 10 | UC1706500494 | GUIDE | | 21212- |
| 11 | UC1100361998 | PLATE,CONTROL | | 21212- |
| 12 | UC1701566059 | BEARING | | 21212- |
| 13 | UC1701566251 | BEARING | | 21212- |
| 14 | 04064-02512 | RING,SNAP | | 21212- |
| 15 | 04065-06825 | RING,SNAP | | 21212- |
| 16 | UC1100354339 | SEAL,OIL | | 21212- |
| 17 | UC1300271009 | O-RING | | 21212- |
| 18 | UC1704350022 | SHIM,0.6MM | | 21212- |
| 18 | UC1100474589 | SHIM,0.7MM | | 21212- |
| 18 | UC1704350013 | SHIM,0.8MM | | 21212- |
| 18 | UC1100474599 | SHIM,0.9MM | | 21212- |
| 18 | UC1704350004 | SHIM,1.0MM | | 21212- |
| 18 | UC1100474609 | SHIM,1.1MM | | 21212- |
| 18 | UC1704329999 | SHIM,1.2MM | | 21212- |
