| Item | Part No. | Part Name | Qty | Serial No. |
| (723-29-19500) | VALVE ASS'Y | 20490- | ||
| (723-29-17500) | VALVE ASS'Y | 19001-20489 | ||
| THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1666-61A0 TO Y1666-68A0. | ||||
| 723-21-03700 | VALVE SUB ASS'Y | 19001- | ||
| 1 | \6\ | BLOCK | 19001- | |
| 2 | \6\ | SPOOL | 19001- | |
| 3 | \6\ | PLUG | 19001- | |
| 4 | \6\ | O-RING | 19001- | |
| 5 | 723-26-15110 | CASE | 19001- | |
| 6 | 709-26-11450 | SPRING | 19001- | |
| 7 | 723-26-15120 | RETAINER | 19001- | |
| 8 | 575-41-17420 | O-RING | 19001- | |
| 9 | 01252-60630 | BOLT | 19001- | |
| 10 | 01641-20608 | WASHER | 19001- | |
| 11 | \6\ | VALVE | 19001- | |
| 12 | \6\ | VALVE | 19001- | |
| 13 | 723-26-51150 | PISTON | 19001- | |
| 14 | 723-26-14140 | SPRING | 19001- | |
| 15 | 723-26-15230 | PLUG | 19001- | |
| 16 | 07002-12434 | O-RING | 19001- | |
| 17 | 07000-13035 | O-RING | 19001- | |
| 18 | 07000-12020 | O-RING | 19001- | |
| 19 | 07000-12120 | O-RING | 19001- | |
| 20 | 07000-12010 | O-RING | 19001- | |
| 21 | \6\ | VALVE | 19001- | |
| 22 | 723-26-15220 | PLUG | 19001- | |
| 23 | 723-26-14150 | SPRING | 19001- | |
| 24 | 07002-11223 | O-RING | 19001- | |
| 25 | 709-30-69100 | VALVE ASS'Y,SUCTION AND SAFETY | 19001- | |
| 26 | 07002-02034 | O-RING | 19001- |