| Item | Part No. | Part Name | Qty | Serial No. |
| 363-64-33110 | VALVE ASS'Y | | 20001-20093 |
| | THIS ASSEMBLY CONSISTS OF ALL PARTS SHOWN IN FIGS.Y1680-01A0 AND Y1680-02A0. | | |
| | THE KAYABA KOGYO PART NUMBER IS THAT KB IS REMOVED FROM KOMATSU PART NUMBER LISTED BELOW. | | |
| 42A-64-13160 | INLET SECTION ASS'Y | | 20001-@ |
| 1 | KB21011-30336 | HOUSING,INLET | | 20001-@ |
| 2 | KB21001-00106 | O-RING | | 20001-@ |
| 363-64-33120 | SPOOL SECTION ASS'Y | | 20001-20093 |
| 3 | \6\ | HOUSING | | 20001-@ |
| 4 | KB21011-32404 | POPPET | | 20001-@ |
| 5 | KB21011-30604 | SPRING | | 20001-@ |
| 6 | KB21001-00106 | O-RING | | 20001-@ |
| 7 | \6\ | SPOOL | | 20001-20093 |
| 8 | KB21001-00689 | O-RING | | 20001-@ |
| 9 | KB21011-32801 | WIPER | | 20001-@ |
| 10 | KB21011-31702 | PLATE | | 20001-@ |
| 11 | KB91111-60102 | SCREW | | 20001-@ |
| 12 | KB21011-30922 | SPACER | | 20001-20093 |
| 13 | KB95131-01400 | O-RING | | 20001-20093 |
| 14 | KB21001-00689 | O-RING | | 20001-@ |
| 15 | KB21011-30702 | SEAT,SPRING | | 20001-@ |
| 16 | KB21011-30630 | SPRING | | 20001-@ |
| 17 | KB21011-30556 | PIN | | 20001-20093 |
| 18 | KB21011-31842 | SLEEVE | | 20001-20093 |
| 19 | KB21011-31031 | CAP | | 20001-20093 |
| 20 | KB92703-06451 | BOLT,HEAD | | 20001-20093 |
| 21 | KB21011-33504 | RING,SNAP | | 20001-20093 |
| 22 | KB21011-33452 | PLATE | | 20001-20093 |
| 23 | KB21001-01366 | BOLT,HEAD | | 20001-20093 |
| 24 | KB21001-01093 | NUT | | 20001-20093 |
| 25 | KB25113-30113 | TUBE,COIL | | 20001-20093 |
| 26 | KB21011-32214 | NUT | | 20001-20093 |
| 27 | 42A-64-13270 | PLUG | | 20001-@ |
| 28 | 42A-64-13280 | O-RING | | 20001-@ |
| 29 | 42A-64-13220 | RELIEF VALVE ASS'Y,MAIN | | 20001-@ |
| 30 | KB21001-00036 | O-RING | | 20001-@ |
| 31 | 42A-64-13230 | RELIEF VALVE ASS'Y,OVERLOAD | | 20001-@ |
| 32 | KB21001-00036 | O-RING | | 20001-@ |
| 33 | 42A-64-13250 | PLUG,(FOR SHIPPING) | | 20001-@ |
| 34 | 42A-64-13260 | CAP,(FOR SHIPPING) | | 20001-20093 |
