| Item | Part No. | Part Name | Qty | Serial No. |
| (723-56-16401) | CONTROL VALVE | 20136- | ||
| (723-56-16400) | CONTROL VALVE | 20001-20135 | ||
| THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1660-31A0 TO Y1660-56A0. | ||||
| \6\ | BODY GROUP | 20001- | ||
| 1 | \6\ | BLOCK | 20001- | |
| 2 | 723-26-15170 | PLUG | 20001- | |
| 3 | 07002-11423 | O-RING | 20001- | |
| 4 | 07000-11007 | O-RING | 20001- | |
| 5 | 07001-01007 | RING,BACK-UP | 20001- | |
| 6 | 723-60-23301 | VALVE ASS'Y,CHECK | 20001- | |
| 7 | 07000-11005 | O-RING | 20001- | |
| 8 | 07001-01005 | RING,BACK-UP | 20001- | |
| 9 | 07002-11023 | O-RING | 20001- | |
| 10 | \6\ | PLUG | 20001- | |
| 11 | 723-26-15991 | UNION | 20001- | |
| 12 | 07000-13024 | O-RING | 20001- | |
| 13 | 02896-11018 | O-RING | 20001- | |
| 14 | 07000-11008 | O-RING | 20001- | |
| 15 | 07000-12120 | O-RING | 20001- | |
| 16 | 723-26-15840 | O-RING | 20001- | |
| 17 | 07000-12022 | O-RING | 20001- |