| Item | Part No. | Part Name | Qty | Serial No. |
| (723-28-10500) | VALVE ASS'Y | 19001- | ||
| (723-29-12502) | VALVE ASS'Y | 15001-19000 | ||
| THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1666-21A0 TO Y1666-28A0. | ||||
| 723-20-62800 | VALVE ASS'Y | 19001- | ||
| 723-20-60903 | VALVE ASS'Y,RELIEF | 15001-19000 | ||
| 1 | \6\ | SLEEVE | 19001- | |
| \6\ | SLEEVE | 15001-19000 | ||
| 2 | \6\ | PLUG | 19001- | |
| \6\ | VALVE | 15001-19000 | ||
| 3 | \6\ | POPPET | 19001- | |
| \6\ | POPPET | 15001-19000 | ||
| 4 | \6\ | PISTON | 19001- | |
| \6\ | SPRING | 15001-19000 | ||
| 5 | \6\ | POPPET | 19001- | |
| \6\ | SCREW | 15001-19000 | ||
| 6 | \6\ | SPACER | 19001- | |
| \6\ | SPRING | 15001-19000 | ||
| 7 | \6\ | NUT | 19001- | |
| \6\ | RING | 15001-19000 | ||
| 8 | \6\ | NUT | 19001- | |
| \6\ | NUT | 15001-19000 | ||
| 9 | 700-22-11410 | O-RING | 15001- | |
| 10 | 700-80-64220 | RING | 15001- | |
| 11 | 07002-02434 | O-RING | 15001- | |
| 12 | \6\ | O-RING | 19001- | |
| \6\ | O-RING | 15001-19000 | ||
| 13 | \6\ | O-RING | 19001- | |
| 14 | \6\ | SEAL | 19001- | |
| 15 | \6\ | SEAL | 19001- | |
| 16 | \6\ | SPRING | 19001- | |
| 17 | \6\ | SPRING | 19001- | |
| 723-20-61602 | VALVE ASS'Y,RELIEF | 15001- | ||
| 18 | \6\ | PISTON | 15001- | |
| 19 | \6\ | SLEEVE | 15001- | |
| 20 | \6\ | POPPET | 15001- | |
| 21 | \6\ | SEAL | 15001- | |
| 22 | \6\ | NUT | 15001- | |
| 23 | \6\ | NUT | 15001- | |
| 24 | \6\ | SPACER | 15001- | |
| 25 | \6\ | PLUG | 15001- | |
| 26 | \6\ | SEAL | 15001- | |
| 27 | \6\ | SLEEVE | 15001- | |
| 28 | \6\ | SPRING | 15001- | |
| 29 | \6\ | POPPET | 15001- | |
| 30 | \6\ | SPRING | 15001- | |
| 31 | 07002-02034 | O-RING | 15001- | |
| 32 | \6\ | O-RING | 15001- | |
| 33 | 07002-02034 | O-RING | 15001- |