| Item | Part No. | Part Name | Qty | Serial No. |
| (709-63-11501) | CONTROL VALVE | 18001- | ||
| THIS ASSEMBLY CONSISTS OF ALL PARTS SHOWN IN FIGS.Y1663-01A0 AND Y1663-02A0. | ||||
| 700-88-58000 | VALVE ASS'Y,RELIEF | 18001- | ||
| 1 | \6\ | SLEEVE | 18001- | |
| 2 | \6\ | VALVE,MAIN | 18001- | |
| 3 | 700-22-11540 | SPRING | 18001- | |
| 4 | 700-10-51230 | PLUG | 18001- | |
| 5 | 700-80-51170 | SEAT,VALVE | 18001- | |
| 6 | 07000-22012 | O-RING | 18001- | |
| 7 | 07001-02012 | RING,BACK-UP | 18001- | |
| 8 | 700-80-61190 | POPPET | 18001- | |
| 9 | 700-80-51240 | SPACER | 18001- | |
| 10 | 700-80-51130 | SPRING | 18001- | |
| 11 | 700-80-51230 | RETAINER | 18001- | |
| 12 | 700-80-51320 | HOLDER | 18001- | |
| 13 | 07239-12410 | NUT | 18001- | |
| 14 | 07002-02434 | O-RING | 18001- | |
| 15 | 700-10-51211 | SCREW | 18001- | |
| 16 | 01580-10605 | NUT | 18001- | |
| 17 | 700-10-51220 | COVER | 18001- | |
| 18 | 07002-01423 | O-RING | 18001- | |
| 19 | 700-13-31161 | O-RING | 18001- | |
| 20 | 700-80-51190 | RING,BACK-UP | 18001- | |
| 21 | 07002-03334 | O-RING | 18001- |