| Item | Part No. | Part Name | Qty | Serial No. |
| (723-57-13801) | VALVE ASS'Y | 1976- | ||
| (723-57-13800) | VALVE ASS'Y | 1501-1975 | ||
| THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1662-21A0 TO Y1662-33A0. | ||||
| 1 | 723-30-90101 | VALVE ASS'Y,RELIEF | 1501- | |
| 2 | 700-13-31161 | O-RING | 1501- | |
| 3 | 700-80-51190 | RING | 1501- | |
| 4 | 07002-03334 | O-RING | 1501- |