| Item | Part No. | Part Name | Qty | Serial No. |
| (723-28-10401) | VALVE ASS'Y | 1001- | ||
| THIS ASSEMBLY CONSISTS OF ALL PARTS SHOWN IN FIGS.Y1664-01A0 T0 Y1664-08A0. | ||||
| (723-27-00301) | BODY GROUP | 1001- | ||
| 1 | \6\ | VALVE | 1001- | |
| 2 | \6\ | ORIFICE | 1001- | |
| 3 | \6\ | VALVE | 1001- | |
| 4 | \6\ | VALVE | 1001- | |
| 5 | \6\ | VALVE | 1001- | |
| 6 | 723-26-50100 | VALVE SUB ASS'Y | 1001- | |
| 7 | \6\ | VALVE | 1001- | |
| 8 | 723-26-51190 | PISTON | 1001- | |
| 9 | \6\ | VALVE | 1001- | |
| 10 | 723-26-51290 | PISTON | 1001- | |
| 11 | \6\ | VALVE | 1001- | |
| 12 | 723-26-51250 | PISTON | 1001- | |
| 13 | 723-26-14220 | SPRING | 1001- | |
| 14 | 723-26-14240 | SPRING | 1001- | |
| 15 | 723-26-14140 | SPRING | 1001- | |
| 16 | 723-26-15230 | PLUG | 1001- | |
| 17 | 723-26-15370 | PLUG | 1001- | |
| 18 | 07002-12434 | O-RING | 1001- | |
| 19 | 07000-13035 | O-RING | 1001- | |
| 20 | 07000-12020 | O-RING | 1001- | |
| 21 | 07000-12120 | O-RING | 1001- | |
| 22 | 07000-12010 | O-RING | 1001- | |
| 23 | 07000-12012 | O-RING | 1001- | |
| 24 | \6\ | VALVE | 1001- | |
| 25 | 723-26-15220 | PLUG | 1001- | |
| 26 | 723-26-15610 | PLUG | 1001- | |
| 27 | 723-26-14150 | SPRING | 1001- | |
| 28 | 723-26-14380 | SPRING | 1001- | |
| 29 | 07002-11223 | O-RING | 1001- | |
| 30 | 723-26-15580 | PLUG | 1001- | |
| 31 | 709-25-11361 | SPRING | 1001- | |
| 32 | 709-25-11650 | VALVE,CHECK | 1001- | |
| 33 | 07000-12016 | O-RING | 1001- | |
| 34 | 723-60-22230 | RING,BACK-UP | 1001- | |
| 35 | 723-26-15490 | SLEEVE | 1001- | |
| 36 | 07002-11823 | O-RING | 1001- | |
| 37 | 07000-12012 | O-RING | 1001- | |
| 38 | 07001-02012 | RING,BACK-UP | 1001- | |
| 39 | 07000-12010 | O-RING | 1001- | |
| 40 | 07001-02010 | RING | 1001- |