| Item | Part No. | Part Name | Qty | Serial No. |
| (723-29-18500) | VALVE ASS'Y | 20490- | ||
| (723-29-15500) | VALVE ASS'Y | 19001-20489 | ||
| THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1666-01A0 TO Y1666-08A0. | ||||
| 1 | 723-20-62800 | VALVE ASS'Y | 19001- | |
| 2 | 700-22-11410 | O-RING | 19001- | |
| 3 | 700-80-64220 | RING | 19001- | |
| 4 | 07002-02434 | O-RING | 19001- | |
| 5 | 723-20-61602 | VALVE ASS'Y,RELIEF | 19001- | |
| 6 | 07002-02034 | O-RING | 19001- |