| Item | Part No. | Part Name | Qty | Serial No. |
| (723-15-12400) | VALVE ASS'Y | 4001- | ||
| THIS ASSEMBLY CONSISTS OF ALL PARTS SHOWN IN FIGS.Y1665-11A0 T0 Y1665-15A0. | ||||
| 1 | \6\ | PLUG | 4001- | |
| 2 | \6\ | PLUG | 4001- | |
| 3 | 07002-10823 | O-RING | 4001- | |
| 4 | 723-11-32810 | RETAINER¤ 9.7MM | 4001- | |
| 723-11-32820 | RETAINER¤ 9.8MM | 4001- | ||
| 723-11-32830 | RETAINER¤ 9.6MM | 4001- | ||
| 5 | 723-11-32840 | RETAINER¤ 9.7MM | 4001- | |
| 723-11-32850 | RETAINER¤ 9.8MM | 4001- | ||
| 723-11-32860 | RETAINER¤ 9.6MM | 4001- | ||
| 6 | \6\ | SPRING | 4001- | |
| 7 | \6\ | SPRING | 4001- | |
| 8 | 723-11-17150 | WASHER | 4001- | |
| 9 | 01252-60610 | BOLT | 4001- | |
| 10 | 723-11-17130 | PLATE | 4001- | |
| 11 | 709-32-11530 | SEAL | 4001- | |
| 12 | 723-11-17930 | CASE,SPRING | 4001- | |
| 13 | 01252-60640 | BOLT | 4001- | |
| 14 | 01252-60610 | BOLT | 4001- | |
| 15 | \6\ | VALVE | 4001- | |
| 16 | \6\ | VALVE | 4001- | |
| 17 | \6\ | VALVE | 4001- | |
| 18 | 723-11-15130 | SPRING | 4001- | |
| 19 | \6\ | VALVE | 4001- | |
| 20 | \6\ | PISTON | 4001- | |
| 21 | \6\ | PISTON | 4001- | |
| 22 | 723-11-16130 | SPRING | 4001- | |
| 23 | 723-11-26350 | SPRING | 4001- | |
| 24 | 723-11-15110 | PLUG | 4001- | |
| 25 | 07002-11623 | O-RING | 4001- |