| Item | Part No. | Part Name | Qty | Serial No. |
| (723-23-10300) | VALVE ASS'Y | B20001- | ||
| THIS ASSEMBLY CONSISTS OF ALL PARTS SHOWN IN FIGS.Y1660-01A0 T0 Y1660-05A0. | ||||
| 1 | \6\ | BLOCK,VALVE | B20001- | |
| 2 | \6\ | BLOCK,VALVE | B20001- | |
| 3 | 723-26-11170 | COVER | B20001- | |
| 4 | 07000-02120 | O-RING | B20001- | |
| 5 | 07000-13035 | O-RING | B20001- | |
| 6 | 07000-12020 | O-RING | B20001- | |
| 7 | 07000-12010 | O-RING | B20001- | |
| 8 | 700-84-11172 | BOLT | B20001- | |
| 9 | 01643-31032 | WASHER | B20001- | |
| 10 | \6\ | SPOOL | B20001- | |
| 11 | \6\ | SPOOL | B20001- | |
| 12 | 723-26-15480 | PLUG | B20001- | |
| 13 | 07000-11003 | O-RING | B20001- | |
| 14 | 07001-01003 | RING,BACK-UP | B20001- | |
| 15 | 700-22-11252 | U-PACKING | B20001- | |
| 16 | 700-22-11430 | COLLAR | B20001- | |
| 17 | 700-22-11261 | SEAL | B20001- | |
| 18 | 723-26-15450 | PLATE | B20001- | |
| 19 | 723-26-15460 | PLATE | B20001- | |
| 20 | 723-26-15470 | GASKET | B20001- | |
| 21 | 700-22-11291 | RETAINER | B20001- | |
| 22 | 700-22-11321 | PLUG | B20001- | |
| 23 | 700-22-11311 | SPRING | B20001- | |
| 24 | 723-26-15420 | CASE | B20001- | |
| 25 | 723-26-14160 | SPRING | B20001- | |
| 26 | 01252-30616 | BOLT | B20001- |