| Item | Part No. | Part Name | Qty | Serial No. |
| (723-58-19500) | CONTROL VALVE | 1601- | ||
| THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1664-21A0 TO Y1664-33A0. | ||||
| \6\ | BODY GROUP | 1601- | ||
| 1 | \6\ | SPOOL | 1601- | |
| 2 | \6\ | SPOOL | 1601- | |
| 3 | \6\ | SPOOL | 1601- | |
| 4 | \6\ | SPOOL | 1601- | |
| 5 | \6\ | SPOOL | 1601- | |
| 6 | \6\ | SPOOL | 1601- | |
| 7 | \6\ | SPOOL | 1601- | |
| 8 | \6\ | PLUG | 1601- | |
| 9 | 07002-11223 | O-RING | 1601- | |
| 10 | 723-56-31211 | RETAINER | 1601- | |
| 11 | 723-36-14120 | SPRING | 1601- | |
| 12 | 723-56-31520 | CASE | 1601- | |
| 13 | 723-56-31530 | CASE | 1601- | |
| 14 | 723-56-31510 | CASE | 1601- | |
| 15 | 702-21-55450 | O-RING | 1601- | |
| 16 | 07000-11006 | O-RING | 1601- | |
| 17 | 01252-60630 | BOLT | 1601- |