| Item | Part No. | Part Name | Qty | Serial No. |
| (723-28-16101) | VALVE ASS'Y | 59659- | ||
| (723-28-16100) | VALVE ASS'Y | 58001-59658 | ||
| (723-28-13102) | VALVE ASS'Y | 55328-58000 | ||
| (723-28-13101) | VALVE ASS'Y | 54770-55327 | ||
| (723-28-13100) | VALVE ASS'Y | 52374-54769 | ||
| THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1664-21A0 TO Y1664-28A0. | ||||
| 723-20-70500 | VALVE ASS'Y | 58001- | ||
| 723-20-70100 | VALVE ASS'Y | 52374-58000 | ||
| 1 | \6\ | SLEEVE | 58001- | |
| 1 | \6\ | SLEEVE | 52374-58000 | |
| 2 | \6\ | VALVE | 58001- | |
| 2 | \6\ | VALVE | 52374-58000 | |
| 3 | \6\ | SPRING | 52374- | |
| 4 | \6\ | PLUG | 52374- | |
| 5 | \6\ | RING | 52374- | |
| 6 | \6\ | O-RING | 52374- | |
| 7 | 07002-12434 | O-RING | 52374- | |
| 8 | 07000-12016 | O-RING | 52374- | |
| 9 | 07001-02016 | RING,BACK-UP | 52374- | |
| 10 | 07000-11009 | O-RING | 52374- | |
| 11 | 07001-01009 | RING,BACK-UP | 52374- | |
| 723-30-60101 | VALVE ASS'Y | 52374- | ||
| 12 | \6\ | SLEEVE | 52374- | |
| 13 | \6\ | VALVE | 52374- | |
| 14 | \6\ | PISTON | 52374- | |
| 15 | \6\ | PISTON | 52374- | |
| 16 | \6\ | SPRING | 52374- | |
| 17 | \6\ | SPRING | 52374- | |
| 18 | \6\ | PLUG | 52374- | |
| 19 | \6\ | SEAL | 52374- | |
| 20 | \6\ | O-RING | 52374- | |
| 21 | \6\ | O-RING | 52374- | |
| 22 | 709-25-11390 | O-RING | 52374- | |
| 23 | 07000-12012 | O-RING | 52374- | |
| 24 | 07001-02012 | RING,BACK-UP | 52374- |