| 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\ | BLOCK | 1001- | |
| 2 | \6\ | BLOCK | 1001- | |
| 3 | \6\ | BLOCK | 1001- | |
| 4 | \6\ | BLOCK | 1001- | |
| 5 | \6\ | BLOCK | 1001- | |
| 6 | \6\ | BLOCK | 1001- | |
| 7 | \6\ | SPOOL | 1001- | |
| 8 | \6\ | SPOOL | 1001- | |
| 9 | \6\ | PLUG | 1001- | |
| 10 | \6\ | VALVE | 1001- | |
| 11 | \6\ | SPRING | 1001- | |
| 12 | \6\ | O-RING | 1001- | |
| 13 | \6\ | RING,BACK-UP | 1001- | |
| 14 | \6\ | SPOOL | 1001- | |
| 15 | \6\ | SPOOL | 1001- | |
| 16 | \6\ | PLUG | 1001- | |
| 17 | \6\ | PLUG | 1001- | |
| 18 | \6\ | VALVE | 1001- | |
| 19 | \6\ | VALVE | 1001- | |
| 20 | \6\ | SPRING | 1001- | |
| 21 | \6\ | O-RING | 1001- | |
| 22 | \6\ | SPOOL | 1001- | |
| 23 | \6\ | PLUG | 1001- | |
| 24 | \6\ | PLUG | 1001- | |
| 25 | \6\ | VALVE | 1001- | |
| 26 | \6\ | SPRING | 1001- | |
| 27 | \6\ | O-RING | 1001- | |
| 28 | \6\ | SPOOL | 1001- | |
| 29 | \6\ | PLUG | 1001- | |
| 30 | \6\ | O-RING | 1001- | |
| 31 | \6\ | SPOOL | 1001- | |
| 32 | \6\ | VALVE | 1001- | |
| 33 | \6\ | SPRING | 1001- | |
| 34 | \6\ | PLUG | 1001- | |
| 35 | \6\ | O-RING | 1001- | |
| 36 | \6\ | RING,BACK-UP | 1001- | |
| 37 | 723-26-15110 | CASE | 1001- | |
| 38 | 709-26-11450 | SPRING | 1001- | |
| 39 | 723-26-14370 | SPRING | 1001- | |
| 40 | 723-26-14210 | SPRING | 1001- | |
| 41 | 723-26-14360 | SPRING | 1001- | |
| 42 | 723-26-14310 | SPRING | 1001- | |
| 43 | 723-26-15620 | RETAINER | 1001- | |
| 44 | 723-26-15120 | RETAINER | 1001- | |
| 45 | 723-26-15570 | PLATE | 1001- | |
| 46 | 575-41-17420 | O-RING | 1001- | |
| 47 | 01252-60630 | BOLT | 1001- | |
| 48 | 01252-60640 | BOLT | 1001- | |
| 49 | 01641-20608 | WASHER | 1001- |