| Item | Part No. | Part Name | Qty | Serial No. |
| 23B-40-11100 | VALVE ASS'Y,STEERING | 50001- | ||
| 23A-40-11200 | VALVE ASS'Y,STEERING | 50001- | ||
| 237-40-12560 | HOUSING ASS'Y,CONTROL | 50001- | ||
| 1 | \6\ | HOUSING | 50001- | |
| 2 | \6\ | SLEEVE | 50001- | |
| 3 | \6\ | SPOOL | 50001- | |
| 4 | 237-40-12620 | PIN | 50001- | |
| 5 | 237-40-12610 | SPRING | 50001- | |
| 6 | 237-40-12550 | RETAINER | 50001- | |
| 7 | 237-40-12540 | BALL | 50001- | |
| 8 | 237-40-12520 | SEAT | 50001- | |
| 9 | \6\ | O-RING (K3) | 50001- | |
| 10 | 237-40-12490 | SCREW | 50001- | |
| 11 | \6\ | O-RING (K3) | 50001- | |
| 237-40-12460 | BEARING ASS'Y | 50001- | ||
| 12 | 237-40-12480 | NEEDLE,BEARING | 50001- | |
| 13 | 237-40-12470 | RACE,BEARING | 50001- | |
| 14 | \6\ | O-RING (K3) | 50001- | |
| 15 | 23A-40-11280 | BUSHING | 50001- | |
| 16 | 237-40-12420 | RING | 50001- | |
| 17 | \6\ | SEAL,DUST (K3) | 50001- | |
| 18 | 237-40-12640 | PLATE,SPACER | 50001- | |
| 19 | \6\ | O-RING,DRIVE (K3) | 50001- | |
| 20 | 237-40-12650 | SHAFT | 50001- | |
| 21 | 23A-40-11220 | DRIVE | 50001- | |
| 22 | 23A-40-11230 | SPACER | 50001- | |
| 23 | 237-40-12670 | CAP,END | 50001- | |
| 24 | \6\ | O-RING (K3) | 50001- | |
| 25 | 23A-40-11210 | SCREW | 50001- | |
| 26 | \6\ | RING,BACK-UP (K3) | 50001- | |
| 27 | \6\ | O-RING (K3) | 50001- |