| Item | Part No. | Part Name | Qty | Serial No. |
| (723-48-20103) | VALVE ASS'Y | 21690- | ||
| (723-48-20102) | VALVE ASS'Y | 21290-21689 | ||
| (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 | 20001- | ||
| 1 | \6\ | BLOCK,VALVE | 20001- | |
| 2 | \6\ | SPOOL | 20001- | |
| 3 | 723-46-15130 | PLUG | 20001- | |
| 4 | 07002-10823 | O-RING | 20001- | |
| 5 | 708-7T-16460 | BALL | 20001- | |
| 6 | 723-46-15120 | RETAINER | 20001- | |
| 7 | 723-46-14110 | SPRING | 20001- | |
| 8 | 723-46-15111 | CASE | 20001- | |
| 9 | 07430-71380 | O-RING | 20001- | |
| 10 | 01252-60820 | BOLT | 20001- | |
| 11 | 07000-11009 | O-RING | 20001- | |
| 12 | 07000-12021 | O-RING | 20001- | |
| 13 | 723-11-19130 | O-RING | 20001- | |
| 14 | 07000-13032 | O-RING | 20001- | |
| 15 | 723-46-17510 | O-RING | 20001- | |
| 16 | 723-46-17520 | RING,BACK-UP | 20001- | |
| 17 | 723-46-17530 | O-RING | 20001- |