| Item | Part No. | Part Name | Qty | Serial No. |
| (723-21-10101) | VALVE ASS'Y | 1003- | ||
| (723-21-10100) | VALVE ASS'Y | 1001-1002 | ||
| THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1661-01A0 TO Y1661-04A0. | ||||
| 1 | \6\ | SPOOL | 1001- | |
| 2 | 723-26-14180 | SPRING | 1001- | |
| 3 | 709-70-71610 | SEAL | 1001- | |
| 4 | \6\ | SLEEVE | 1001- | |
| 5 | \6\ | PISTON | 1001- | |
| 6 | 723-26-14190 | SPRING | 1001- | |
| 7 | 07000-12018 | O-RING | 1001- | |
| 8 | 07001-02018 | RING,BACK-UP | 1001- | |
| 9 | 07002-12434 | O-RING | 1001- | |
| 10 | 723-40-56130 | PLUG | 1001- | |
| 11 | 07002-11423 | O-RING | 1001- | |
| 12 | 723-26-15230 | PLUG | 1001- | |
| 13 | 07002-12434 | O-RING | 1001- | |
| 14 | 723-26-15370 | PLUG | 1001- | |
| 15 | \6\ | PISTON | 1001- | |
| 16 | \6\ | VALVE | 1001- | |
| 17 | \6\ | VALVE | 1001- | |
| 18 | 723-26-14220 | SPRING | 1001- | |
| 19 | 723-26-14240 | SPRING | 1001- | |
| 20 | 723-26-15310 | PLUG | 1001- | |
| 21 | 07002-12034 | O-RING | 1001- | |
| 22 | 07000-11007 | O-RING | 1001- | |
| 23 | 708-8E-16160 | PLUG | 1001- | |
| 24 | 07002-11023 | O-RING | 1001- | |
| 25 | 706-73-71450 | PLUG | 1001- | |
| 26 | 07002-11423 | O-RING | 1001- | |
| 27 | 723-26-15190 | PLUG | 1001- | |
| 28 | 07000-11009 | O-RING | 1001- | |
| 29 | 07001-01009 | RING,BACK-UP | 1001- | |
| 30 | 07000-11007 | O-RING | 1001- | |
| 31 | 07001-01007 | RING,BACK-UP | 1001- | |
| 32 | \6\ | PLUG | 1001- | |
| 33 | 07002-11223 | O-RING | 1001- | |
| 34 | 07000-11007 | O-RING | 1001- | |
| 35 | 07001-01007 | RING,BACK-UP | 1001- | |
| 36 | \6\ | PLUG | 1001- | |
| 37 | \6\ | PLUG | 1001- |