| 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. | ||||
| \6\ | BODY SUB ASS'Y | B31800- | ||
| 1 | \6\ | BLOCK,VALVE | B31800- | |
| 2 | \6\ | SPOOL | B31800- | |
| 3 | \6\ | SPOOL | B31800- | |
| 4 | \6\ | SPOOL | B31800- | |
| 5 | \6\ | SPOOL | B31800- | |
| 6 | \6\ | SPOOL | B31800- | |
| 7 | 723-46-15130 | PLUG | B31800- | |
| 8 | 723-46-15140 | PLUG | B31800- | |
| 9 | 723-46-15650 | PLUG | B31800- | |
| 10 | 07002-10823 | O-RING | B31800- | |
| 11 | 708-7T-16460 | BALL | B31800- | |
| 12 | 723-46-15120 | RETAINER | B31800- | |
| 13 | 723-46-15690 | RETAINER | B31800- | |
| 14 | 723-46-15950 | RETAINER | B31800- | |
| 15 | 723-46-15880 | RETAINER | B31800- | |
| 16 | 723-46-14110 | SPRING | B31800- | |
| 17 | 723-46-14280 | SPRING | B31800- | |
| 18 | 723-46-14290 | SPRING | B31800- | |
| 19 | 723-46-14131 | SPRING | B31800- |