| Item | Part No. | Part Name | Qty | Serial No. |
| 723-26-52100 | CONTROL VALVE | 6501- | ||
| 723-26-51101 | CONTROL VALVE | 4001-6500 | ||
| THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1660-01A0 TO Y1660-20A0. | ||||
| \6\ | COVER GROUP | 6501- | ||
| \6\ | COVER GROUP | 4001-6500 | ||
| 1 | 723-26-21760 | COVER | 6501- | |
| 1 | 723-26-21741 | COVER | 4001-6500 | |
| 2 | 708-8E-16160 | PLUG | 4001- | |
| 3 | 07002-11023 | O-RING | 4001- | |
| 4 | 702-21-55620 | PLUG | 4001- | |
| 5 | 07002-11423 | O-RING | 4001- | |
| 6 | 723-26-16630 | PLUG | 4001- | |
| 7 | 07000-11009 | O-RING | 4001- | |
| 8 | 07001-01009 | RING,BACK-UP | 4001- | |
| 9 | 07000-11007 | O-RING | 4001- | |
| 10 | 07001-01007 | RING,BACK-UP | 4001- |