| Item | Part No. | Part Name | Qty | Serial No. |
| 23A-60-26200 | CONTROL VALVE ASS'Y | 4501- | ||
| THIS ASSEMBLY CONSISTS OF ALL PARTS SHOWN IN FIGS.6202 AND 6203. | ||||
| THE KAYABA KOGYO PART NUMBER IS THAT KB IS REMOVED FROM KOMATSU PART NUMBER LISTED BELOW. | ||||
| KB21013-35188 | SPOOL SECTION ASS'Y | 4501- | ||
| 1 | \6\ | HOUSING | 4501- | |
| 2 | \6\ | O-RING (KIT A) | 4501- | |
| 3 | \6\ | WIPER (KIT A) | 4501- | |
| 4 | \6\ | SPOOL | 4501- | |
| 5 | KB21011-30613 | SPRING | 4501- | |
| 6 | KB21011-30702 | SEAT,SPRING | 4501- | |
| 7 | KB21011-30507 | SCREW | 4501- | |
| 8 | KB21011-31011 | CAP | 4501- | |
| 9 | KB21011-31702 | PLATE,PLATE | 4501- | |
| 10 | KB92702-06181 | BOLT | 4501- | |
| 11 | KB21011-31702 | PLATE,PLATE | 4501- | |
| 12 | KB91111-60102 | SCREW | 4501- | |
| 13 | KB21011-32404 | POPPET | 4501- | |
| 14 | KB21011-30606 | SPRING | 4501- | |
| 15 | \6\ | O-RING (KIT A) | 4501- | |
| KB21013-30758 | SECTION ASS'Y,FLOW CONTROL | 4501- | ||
| 16 | \6\ | HOUSING | 4501- | |
| 17 | \6\ | SPOOL | 4501- | |
| 18 | KB21011-36504 | SPRING | 4501- | |
| 19 | KB21011-30997 | SPACER | 4501- | |
| 20 | KB21011-30998 | SPACER | 4501- | |
| 21 | \6\ | O-RING | 4501- | |
| 22 | \6\ | RING,BACK-UP | 4501- | |
| 23 | KB21011-32512 | ADJUSTER | 4501- | |
| 24 | KB21011-32947 | PLUG | 4501- | |
| 25 | \6\ | O-RING | 4501- | |
| 26 | KB21001-00504 | PLUG | 4501- | |
| 27 | \6\ | O-RING | 4501- | |
| 28 | KB21011-32404 | POPPET | 4501- | |
| 29 | KB21011-30604 | SPRING | 4501- | |
| 30 | \6\ | O-RING | 4501- | |
| KB21013-36001 | INLET SECTION ASS'Y | 4501- | ||
| 31 | KB21011-36301 | HOUSING | 4501- | |
| 32 | \6\ | O-RING (KIT B) | 4501- | |
| KB21003-00207 | PLUG ASS'Y | 4501- | ||
| 33 | KB21001-00504 | PLUG | 4501- | |
| 34 | \6\ | O-RING (KIT B) | 4501- | |
| 35 | KB21013-30664 | RELIEF VALVE ASS'Y | 4501- | |
| 36 | KB21091-30702 | STUD | 4501- | |
| 37 | KB93118-08652 | NUT | 4501- | |
| 38 | KB21091-30701 | STUD | 4501- | |
| 39 | KB93128-10082 | NUT | 4501- | |
| SERVICE KIT | ||||
| KIT A | 23E-60-05120 | SERVICE KIT,CONTROL VALVE | 4501- | |
| KIT B | 23A-60-06410 | SERVICE KIT,CONTROL VALVE | 4501- |