| 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. | ||||
| 723-40-72100 | VALVE ASS'Y | B31800- | ||
| 1 | \6\ | BODY | B31800- | |
| 2 | \6\ | SPOOL | B31800- | |
| 3 | 723-40-72800 | PLATE ASS'Y | B31800- | |
| 4 | 702-21-60500 | PILOT VALVE | B31800- | |
| 5 | 700-80-61260 | O-RING | B31800- | |
| 6 | 723-11-19960 | O-RING | B31800- | |
| 7 | 702-21-54180 | SCREW | B31800- | |
| 8 | 702-21-54910 | O-RING | B31800- | |
| 9 | 723-46-15111 | CASE | B31800- | |
| 10 | 07430-71380 | O-RING | B31800- | |
| 11 | 723-40-71330 | RETAINER | B31800- | |
| 12 | 723-40-71340 | SPRING | B31800- | |
| 13 | 723-40-71350 | RETAINER | B31800- | |
| 14 | 01252-60816 | BOLT | B31800- | |
| 15 | 723-40-71870 | UNION | B31800- | |
| 16 | 02896-11008 | O-RING | B31800- | |
| 17 | 07002-11423 | O-RING | B31800- | |
| 18 | 07040-11409 | PLUG | B31800- | |
| 19 | 07002-11423 | O-RING | B31800- | |
| 20 | 01252-60855 | BOLT | B31800- | |
| 21 | 01252-60635 | BOLT | B31800- | |
| 22 | \6\ | SPOOL ASS'Y | B31800- | |
| 23 | 723-40-71850 | SPRING | B31800- | |
| 24 | 723-46-18720 | O-RING | B31800- | |
| 25 | \6\ | SPOOL | B31800- | |
| 26 | 723-40-71390 | SPRING | B31800- | |
| 27 | 723-46-18720 | O-RING | B31800- | |
| 723-40-71900 | VALVE ASS'Y | B31800- | ||
| 28 | 723-40-91600 | VALVE ASS'Y,RELIEF | B31800- | |
| 29 | 702-16-53920 | O-RING | B31800- | |
| 30 | 07002-11623 | O-RING | B31800- | |
| 31 | \6\ | BLOCK | B31800- | |
| 32 | \6\ | SPOOL | B31800- | |
| 33 | \6\ | SPRING | B31800- | |
| 34 | 702-21-55620 | PLUG | B31800- | |
| 35 | 07002-11423 | O-RING | B31800- | |
| 36 | 702-21-55710 | SEAT | B31800- | |
| 37 | 702-21-55720 | SPRING | B31800- | |
| 38 | 04260-00793 | BALL | B31800- | |
| 39 | 07000-11009 | O-RING | B31800- | |
| 40 | \6\ | PLUG | B31800- |