| Item | Part No. | Part Name | Qty | Serial No. |
| (723-47-23600) | VALVE ASS'Y | B31800- | ||
| THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1663-01A0 TO Y1663-21A0. | ||||
| 723-40-87601 | VALVE ASS'Y | B31800- | ||
| 1 | 723-40-87510 | BODY | B31800- | |
| 2 | 723-40-87240 | SPOOL | B31800- | |
| 3 | 723-40-87260 | SPRING | B31800- | |
| 4 | \6\ | SLEEVE | B31800- | |
| 5 | \6\ | SEAL | B31800- | |
| 6 | \6\ | CASE | B31800- | |
| 7 | 723-40-87250 | RETAINER | B31800- | |
| 8 | 723-40-87170 | O-RING | B31800- | |
| 9 | 07000-13035 | O-RING | B31800- | |
| 10 | 07000-11007 | O-RING | B31800- | |
| 11 | 01252-60825 | BOLT | B31800- | |
| 12 | 723-40-87520 | PISTON | B31800- | |
| 13 | 723-40-87540 | SPRING | B31800- | |
| 14 | \6\ | SLEEVE | B31800- | |
| 15 | \6\ | CASE | B31800- | |
| 16 | 723-40-87170 | O-RING | B31800- | |
| 17 | 01252-61080 | BOLT | B31800- |