| Item | Part No. | Part Name | Qty | Serial No. |
| 723-48-20102 | VALVE ASS'Y | 21290- | ||
| 723-48-20101 | VALVE ASS'Y | 20805-21289 | ||
| 723-48-20100 | VALVE ASS'Y | 20001-20804 | ||
| THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1664-01A0 TO Y1664-21A0. | ||||
| \6\ | BODY SUB ASS'Y | 21290- | ||
| \6\ | BODY SUB ASS'Y | 20805-21289 | ||
| \6\ | BODY SUB ASS'Y | 20001-20804 | ||
| 1 | \6\ | BLOCK,VALVE | 20001- | |
| 2 | \6\ | SPOOL | 20001- | |
| 3 | \6\ | SPOOL | 20001- | |
| 4 | \6\ | SPOOL | 20001- | |
| 5 | \6\ | SPOOL | 21290- | |
| \6\ | SPOOL | 20001-21289 | ||
| 6 | \6\ | SPOOL | 20001- | |
| 7 | 723-46-15130 | PLUG | 20001- | |
| 8 | 723-46-15140 | PLUG | 20001- | |
| 9 | 07002-10823 | O-RING | 20001- | |
| 10 | 708-7T-16460 | BALL | 20001- | |
| 11 | 723-46-15120 | RETAINER | 20001- | |
| 12 | 723-46-15690 | RETAINER | 20001- | |
| 13 | 723-46-14110 | SPRING | 20001- | |
| 14 | 723-46-14270 | SPRING | 20001- | |
| 15 | 723-46-14131 | SPRING | 20001- |