| Item | Part No. | Part Name | Qty | Serial No. |
| (363-17-31402) | PUMP ASS'Y,(A4VG28DA-931-0) | | 21212- |
| (363-17-31401) | PUMP ASS'Y,(A4VG28DA-965-1) | | 20642-21211 |
| | THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1610-01A0A TO Y1610-07A0B . | | |
| | THE UCHIDA YUATSU KIKI PART NUMBER IS THAT UC IS REMOVED FROM KOMATSU PART NUMBER LISTED BELOW. | | |
| (UCBA041S9146-0) | PUMP ASS'Y,PISTON | | 21212- |
| (UCB1043R9565-0) | PUMP ASS'Y,PISTON | | 20642-21211 |
| | THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1610-02A0A TO Y1610-06A0A . | | |
| UC4704340893 | CYLINDER ASS'Y,LEANING | | 20642- |
| 1 | UC1704351281 | PISTON | | 20642- |
| 2 | UC1704142014 | ROD | | 20642- |
| 3 | UC1704322467 | SPRING,LARGE | | 20642- |
| 4 | UC1704322476 | SPRING,SMALL | | 20642- |
| 5 | UC1704352642 | RETAINER | | 20642- |
| 6 | UC1701544765 | SHIM, 0.3MM | | 20642- |
| 6 | UC1701544774 | SHIM, 0.5MM | | 20642- |
| 6 | UC1701547259 | SHIM, 0.4MM | | 20642- |
| 7 | 04065-04018 | RING,SNAP | | 20642- |
| 8 | UC1704004646 | RING, 5.77MM | | 20642- |
| 8 | UC1704004655 | RING, 5.82MM | | 20642- |
| 8 | UC1704004664 | RING, 5.87MM | | 20642- |
| 8 | UC1704004673 | RING, 5.92MM | | 20642- |
| 8 | UC1704004682 | RING, 5.97MM | | 20642- |
| 8 | UC1704004691 | RING, 6.02MM | | 20642- |
| 9 | UC1704004701 | GUIDE | | 20642- |
| 10 | 02890-01009 | O-RING | | 20642- |
| 11 | UC1704152075 | COVER | | 20642- |
| 12 | UC1704154199 | COVER | | 20642- |
| 13 | UC1100357614 | BUSHING | | 21212- |
| 13 | (\7\UC1704142261) | BUSHING | | 20642-21211 |
| 14 | 02891-02051 | O-RING | | 20642- |
| 15 | UC1193100207 | NUT | | 20642- |
| 16 | 01252-30620 | BOLT | | 20642- |
