| Item | Part No. | Part Name | Qty | Serial No. |
| (723-58-13901) | VALVE ASS'Y | 6484- | ||
| (723-58-13900) | VALVE ASS'Y | 4501-6483 | ||
| THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1664-21A0 TO Y1664-35A0. | ||||
| 723-50-53102 | VALVE ASS'Y | 4501- | ||
| 1 | \6\ | BLOCK | 4501- | |
| 2 | \6\ | VALVE | 4501- | |
| 3 | 702-21-35130 | SEAL | 4501- | |
| 4 | 723-50-53130 | SPRING | 4501- | |
| 5 | \6\ | PISTON | 4501- | |
| 6 | \6\ | SEAL | 4501- | |
| 7 | \6\ | SLEEVE | 4501- | |
| 8 | 07000-12010 | O-RING | 4501- | |
| 9 | 07001-02010 | RING | 4501- | |
| 10 | 07000-12012 | O-RING | 4501- | |
| 11 | 07001-02012 | RING,BACK-UP | 4501- | |
| 12 | 723-50-53170 | SEAT | 4501- | |
| 13 | 07000-12016 | O-RING | 4501- | |
| 14 | \6\ | PISTON | 4501- | |
| 15 | 723-50-53190 | SPRING | 4501- | |
| 16 | 723-50-53270 | PLATE | 4501- | |
| 17 | 723-50-53260 | RETAINER | 4501- | |
| 18 | 07000-12015 | O-RING | 4501- | |
| 19 | 07000-13030 | O-RING | 4501- | |
| 20 | 01252-60630 | BOLT | 4501- | |
| 21 | \6\ | PLUG | 4501- | |
| 22 | 700-13-31161 | O-RING | 4501- | |
| 23 | 07000-11007 | O-RING | 4501- |