| Item | Part No. | Part Name | Qty | Serial No. |
| (361-17-21200) | PUMP ASS'Y,(A4VG28DA-987-0) | | 10222-10841 |
| (361-17-21200) | PUMP ASS'Y,(A4VG28DA-999-1) | | 10001-10221 |
| | 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. | | |
| (UCB1043R9914-0) | PUMP ASS'Y,PISTON | | 10222-10841 |
| (UCC9845A0376-0) | PUMP ASS'Y,PISTON | | 10001-10221 |
| | THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1610-02A0 TO Y1610-06A0. | | |
| (\7\UC4100362017) | COVER ASS'Y | | 10222-10841 |
| (\7\UC4100356241) | COVER ASS'Y | | 10001-10221 |
| 1 | (\7\UC4100378672) | COVER | | 10222-10841 |
| 1 | (\7\UC4100372812) | COVER | | 10001-10221 |
| 2 | 02891-02081 | O-RING | | 10001-@ |
| 3 | UC1300034003 | O-RING | | 10001-@ |
| 4 | (\7\UC1701570838) | RING | | 10001-@ |
| 5 | (\7\01252-31260) | BOLT | | 10001-@ |
| 6 | (\7\UC1100354275) | COUPLING | | 10001-@ |
| 7 | (\7\UC1701532459) | BEARING | | 10001-@ |
| 8 | (\7\UC1701533646) | PLUG | | 10001-@ |
| 9 | (\7\UC1701516926) | PLUG | | 10222-10841 |
| 9 | (\7\UC1607054546) | PLUG | | 10001-10221 |
| 10 | (\7\UC1701533389) | PLUG | | 10001-@ |
| (UC4100368143) | RELIEF VALVE ASS'Y,HIGH PRESSURE | | 10001-@ |
| 11 | (\7\UC4100372748) | VALVE ASS'Y | | 10001-@ |
| 12 | UC1300146005 | O-RING | | 10001-@ |
| 13 | UC1300166009 | O-RING | | 10001-@ |
| 14 | UC1609041827 | NUT | | 10001-@ |
| 15 | UC1100310514 | NUT,CAP | | 10001-@ |
| 16 | UC1800042449 | O-RING | | 10001-@ |
| (UC4704336674) | RELIEF VALVE ASS'Y,LOW PRESSURE | | 10001-@ |
| 17 | (\7\UC1704328209) | GUIDE | | 10001-@ |
| 18 | (\7\UC1704328199) | PLUNGER | | 10001-@ |
| 19 | (\7\UC1704244615) | SPRING | | 10001-@ |
| 20 | (\7\UC1701537996) | SHIM, 0.5MM | | 10001-@ |
| 20 | (\7\UC1701570782) | SHIM, 1.0MM | | 10001-@ |
| 20 | (\7\UC1701578667) | SHIM, 0.3MM | | 10001-@ |
| 21 | (\7\UC1704328189) | PLUG | | 10001-@ |
| 22 | UC1300158008 | O-RING | | 10001-@ |
| (UC4100368152) | DA CURTRIDGE ASS'Y | | 10001-@ |
| 23 | (\7\UC4100372775) | DA CURTRIDGE ASS'Y | | 10001-@ |
| 24 | (\7\04065-01410) | RING,SNAP | | 10001-@ |
| 25 | UC1300170008 | O-RING | | 10001-@ |
| 26 | UC1609041836 | NUT | | 10001-@ |
| 27 | UC1100310505 | NUT,CAP | | 10001-@ |
| 28 | 02890-01009 | O-RING | | 10001-@ |
