| Item | Part No. | Part Name | Qty | Serial No. |
| 234-60-66700 | VALVE ASS'Y,2-SPOOL | 23001- | ||
| THE KAYABA KOGYO PART NUMBER IS THAT KB IS REMOVED FROM KOMATSU PART NUMBER LISTED BELOW. | ||||
| 1 | KB21001-00332 | NUT | 23001- | |
| 2 | KB21031-40401 | STUD | 23001- | |
| 3 | KB21001-00333 | NUT | 23001- | |
| 4 | KB21031-40402 | STUD | 23001- | |
| 5 | KB21013-47104 | INLET SECTION ASS'Y | 23001- | |
| 6 | KB21013-40121 | INLET SECTION ASS'Y | 23001- | |
| 7 | KB21013-40201 | SPOOL SECTION ASS'Y | 23001- | |
| 8 | KB21013-40301 | SPOOL SECTION ASS'Y | 23001- | |
| 9 | KB21011-41602 | BLOCK | 23001- | |
| 10 | KB21113-40058 | VALVE ASS'Y,RELIEF | 23001- |