| Item | Part No. | Part Name | Qty | Serial No. |
| (20U-60-22223) | VALVE ASS'Y | 12772- | ||
| (\0\20U-60-22222) | VALVE ASS'Y | 9181-12771 | ||
| (\0\20U-60-22221) | VALVE ASS'Y | 8001-9180 | ||
| THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1682-01A1 TO Y1682-03A1. | ||||
| 1 | \6\ | BLOCK | 8001- | |
| 2 | \6\ | BLOCK | 8001- | |
| 3 | \6\ | BLOCK | 8001- | |
| 4 | NAC01200055010 | O-RING | 8001- | |
| 5 | \6\ | SPOOL,TRAVEL, R.H. | 12772- | |
| 5 | \6\ | SPOOL,TRAVEL, R.H. | 8001-12771 | |
| 6 | \6\ | SPOOL,BUCKET | 8001- | |
| 7 | \6\ | SPOOL,BOOM | 12772- | |
| 7 | \6\ | SPOOL,BOOM | 8001-12771 | |
| 8 | NAD33416861901 | RETAINER | 8001- | |
| 9 | NAE57416861701 | SPRING | 8001- | |
| 10 | NAD33416861801 | CASE | 8001- | |
| 11 | NAC01100022010 | O-RING | 8001- | |
| 12 | NAA02010604051 | BOLT | 8001- | |
| 13 | NAD33414362401 | RETAINER | 8001- | |
| 14 | NAE57416982101 | SPRING | 8001- | |
| 15 | NAE51417062001 | BOLT | 8001- | |
| 16 | NAD33414760401 | CASE | 8001- | |
| 17 | NAE55414586501 | SEAL,OIL | 8001- | |
| 18 | NAD33090604004 | PLATE | 8001- | |
| 19 | NAE51416985101 | BOLT | 8001- | |
| 20 | NAA02010601051 | BOLT | 8001- | |
| 21 | NAD33417236801 | POPPET | 8001- | |
| 22 | NAE57417237001 | SPRING | 8001- | |
| 23 | NAD33417236901 | PLUG | 8001- | |
| 24 | NAC01100014010 | O-RING | 8001- | |
| 25 | (NAD33316087822) | VALVE ASS'Y,MAIN RELIEF | 8001- | |
| 26 | (NAD33415778005) | VALVE ASS'Y,SAFETY | 8001- | |
| 27 | (NAD33416379404) | VALVE ASS'Y,SAFETY AND SUCTION | 8001- |