| Item | Part No. | Part Name | Qty | Serial No. |
| (263-60-31400) | PUMP ASS'Y | 11001- | ||
| THIS ASSEMBLY CONSISTS OF ALL PARTS SHOWN IN FIGS.2501 AND 2503. | ||||
| THE KAYABA KOGYO PART NUMBER IS THAT KB IS REMOVED FROM KOMATSU PART NUMBER LISTED BELOW. | ||||
| 1 | \6\ | BODY | 11001- | |
| 2 | KB20121-40102 | PLATE,CENTER | 11001- | |
| 3 | KB20121-30101 | COVER | 11001- | |
| KB2012B-40090 | GEAR ASS'Y,REAR | 11001- | ||
| 4 | \6\ | GEAR,DRIVE | 11001- | |
| 5 | \6\ | GEAR,DRIVEN | 11001- | |
| 6 | \6\ | BUSHING | 11001- | |
| 7 | \6\ | BUSHING | 11001- | |
| 8 | \6\ | PACKING,RING (K1) | 11001- | |
| 9 | \6\ | PACKING,RING (K1) | 11001- | |
| 10 | \6\ | SEAL,OIL (K1) | 11001- | |
| 11 | \6\ | SEAL,OIL (K1) | 11001- | |
| 12 | \6\ | SEAL,OIL (K1) | 11001- | |
| 13 | KB20121-43201 | WASHER,THRUST | 11001- | |
| 14 | KB20121-41802 | COUPLING | 11001- | |
| 15 | \6\ | O-RING (K1) | 11001- | |
| 16 | KB20121-41205 | BOLT | 11001- | |
| 17 | KB94101-10250 | WASHER,SPRING | 11001- |