| Item | Part No. | Part Name | Qty | Serial No. |
| (723-29-18500) | VALVE ASS'Y | 20490- | ||
| (723-29-15500) | VALVE ASS'Y | 19001-20489 | ||
| THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1666-01A0 TO Y1666-08A0. | ||||
| 723-26-00901 | COVER SUB ASS'Y | 19001- | ||
| 1 | 723-26-11370 | COVER | 19001- | |
| 2 | 723-26-15170 | PLUG | 19001- | |
| 3 | 723-26-15190 | PLUG | 19001- | |
| 4 | 708-8E-16160 | PLUG | 19001- | |
| 5 | 706-73-71450 | PLUG | 19001- | |
| 6 | 07002-11423 | O-RING | 19001- | |
| 7 | 07002-11023 | O-RING | 19001- | |
| 8 | 07000-11007 | O-RING | 19001- | |
| 9 | 07001-01007 | RING,BACK-UP | 19001- | |
| 10 | 07000-11009 | O-RING | 19001- | |
| 11 | 07001-01009 | RING,BACK-UP | 19001- | |
| 12 | 723-26-15690 | STUD | 19001- | |
| 13 | 01580-11008 | NUT | 19001- | |
| 14 | 01643-31032 | WASHER | 19001- | |
| 15 | 04530-10815 | BOLT,EYE | 19001- |