| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | VALVE ASSEMBLY, 2-SPOOL(SEE FIG. Y1660-01A0) | A31001-A31195- | ||
| OR | ||||
| 1 | VALVE ASSEMBLY, 3-SPOOL(SEE FIG. Y1661-01A0) | A31001-UP- | ||
| 2 | 01010-81680 | BOLT | A31001-UP- | |
| 3 | 01011-81605 | BOLT | A31001-UP- | |
| 4 | 01643-31645 | WASHER | A31001-UP- | |
| 5 | 421-64-23110 | BRACKET | A31001-UP- | |
| 6 | 01010-81670 | BOLT | A31001-UP- | |
| 7 | 01643-31645 | WASHER | A31001-UP- | |
| 8 | 421-70-11280 | WASHER | A31001-UP- | |
| 9 | 421-64-23120 | CUSHION | A31001-UP- | |
| 10 | 421-64-23140 | SPACER | A31001-UP- | |
| 11 | 421-64-23130 | CUSHION | A31001-UP- | |
| 12 | 421-64-23150 | CUSHION | A31001-UP- |