| Item | Part No. | Part Name | Qty | Serial No. |
| 709-81-11101 | VALVE ASS'Y | B20001-B20500 | ||
| THIS ASSEMBLY CONSISTS OF ALL PARTS SHOWN IN FIGS.Y1660-11A0 AND Y1660-12A0. | ||||
| 1 | \6\ | BODY,VALVE | B20001-B20500 | |
| 2 | \6\ | COVER,VALVE | B20001-B20500 | |
| 3 | 07000-03030 | O-RING | B20001-B20500 | |
| 4 | 07000-13050 | O-RING | B20001-B20500 | |
| 5 | 700-81-11212 | BOLT | B20001-B20500 | |
| 6 | 700-81-11222 | BOLT | B20001-B20500 | |
| 7 | 700-22-11370 | PLUG | B20001-B20500 | |
| 8 | 07002-12434 | O-RING | B20001-B20500 | |
| 9 | 700-42-31460 | VALVE | B20001-B20500 | |
| 10 | 700-42-31470 | SPRING | B20001-B20500 | |
| 11 | 700-84-11320 | PLUG | B20001-B20500 | |
| 12 | 07002-13034 | O-RING | B20001-B20500 | |
| 13 | \6\ | SPOOL | B20001-B20500 | |
| 14 | 700-84-11310 | PLATE | B20001-B20500 | |
| 15 | 700-84-11232 | PACKING | B20001-B20500 | |
| 16 | 700-84-11820 | SEAL,DUST | B20001-B20500 | |
| 17 | 700-82-11250 | PLATE | B20001-B20500 | |
| 18 | 700-84-11240 | O-RING | B20001-B20500 | |
| 19 | 01252-30625 | BOLT | B20001-B20500 | |
| 20 | 700-82-11260 | PLATE | B20001-B20500 | |
| 21 | 700-82-11270 | SPACER | B20001-B20500 | |
| 22 | 700-82-11280 | RETAINER | B20001-B20500 | |
| 23 | 700-82-11290 | RETAINER | B20001-B20500 | |
| 24 | 700-84-11770 | SPRING | B20001-B20500 | |
| 25 | 700-82-11310 | CASE | B20001-B20500 | |
| 26 | 01252-30630 | BOLT | B20001-B20500 | |
| 27 | 700-82-11320 | PLUG | B20001-B20500 | |
| 28 | 700-82-11330 | PLUG | B20001-B20500 | |
| 29 | 700-82-11340 | BALL | B20001-B20500 | |
| 30 | 700-84-11730 | BALL | B20001-B20500 | |
| 31 | 700-81-11530 | SPRING | B20501- | |
| 700-82-11380 | SPRING | B20001-B20500 | ||
| 32 | 700-82-11350 | SCREW | B20001-B20500 | |
| 33 | 700-82-11360 | NUT | B20001-B20500 | |
| 34 | 700-82-11370 | PLUG | B20001-B20500 | |
| 35 | 700-84-11340 | PLUG | B20001-B20500 | |
| 36 | 07002-03034 | O-RING | B20001-B20500 | |
| 37 | 700-80-61260 | O-RING | B20001-B20500 |