| Item | Part No. | Part Name | Qty | Serial No. |
| 702-21-26002 | VALVE ASS'Y | 4001- | ||
| THIS ASSEMBLY CONSISTS OF ALL PARTS SHOWN IN FIGS.Y1660-11A0 AND Y1660-12A0. | ||||
| 1 | \6\ | BODY | 4001- | |
| 2 | \6\ | SPOOL | 4001- | |
| 3 | 281-64-14450 | PLUG | 4001- | |
| 4 | 07002-14234 | O-RING | 4001- | |
| 5 | 702-21-26380 | COVER | 4001- | |
| 6 | 702-21-26141 | SPRING | 4001- | |
| 7 | 01010-51865 | BOLT | 4001- | |
| 8 | 01602-21854 | WASHER,SPRING | 4001- | |
| 9 | 07000-12070 | O-RING | 4001- | |
| 10 | 702-13-46290 | POPPET | 4001- | |
| 11 | 701-30-67130 | SPRING | 4001- | |
| 12 | 702-21-26390 | PLUG | 4001- | |
| 13 | 07000-13030 | O-RING | 4001- | |
| 14 | 07001-03030 | RING,BACK-UP | 4001- | |
| 15 | 702-13-41320 | PLATE | 4001- | |
| 16 | 01010-81240 | BOLT | 4001- | |
| 17 | 01602-21236 | WASHER,SPRING | 4001- | |
| 18 | 01010-80830 | BOLT | 4001- | |
| 19 | 01602-20825 | WASHER,SPRING | 4001- | |
| 20 | 702-13-41160 | PLUG | 4001- | |
| 21 | 702-13-51280 | O-RING | 4001- | |
| 22 | 700-62-34140 | RING,BACK-UP | 4001- | |
| 23 | 07378-10600 | HEAD | 4001- | |
| 24 | 07000-13025 | O-RING | 4001- | |
| 25 | 07371-30638 | FLANGE,SPLIT | 4001- | |
| 26 | 01010-80830 | BOLT | 4001- | |
| 27 | 01602-20825 | WASHER,SPRING | 4001- | |
| 28 | 702-21-26151 | ORIFICE | 4001- | |
| 29 | 702-21-26162 | ORIFICE | 4001- | |
| 30 | 07040-11409 | PLUG | 4001- | |
| 31 | 07002-11423 | O-RING | 4001- | |
| 32 | 702-21-26180 | BLOCK | 4001- | |
| 33 | 07040-11007 | PLUG | 4001- | |
| 34 | 07002-11023 | O-RING | 4001- | |
| 35 | 07000-22018 | O-RING | 4001- | |
| 36 | 07040-11209 | PLUG | 4001- | |
| 37 | 07002-11223 | O-RING | 4001- | |
| 38 | (709-10-53300) | VALVE ASS'Y,RELIEF | 4001- |