| Item | Part No. | Part Name | Qty | Serial No. |
| 421-35-11400 | VALVE ASSEMBLY, TREADLE | | |
| 1 | (NSS) | BODY | | |
| 566-35-00130 | VALVE ASSEMBLY, UPPER | | |
| 2 | (NSS) | VALVE, UPPER | | |
| 3 | 238-44-12140 | RETAINER | | |
| 4 | (NSS) | SPRING | | |
| 5 | 238-44-12160 | RETAINER | | |
| 6 | (NSS) | O-RING | | |
| 7 | 238-44-12180 | WASHER, SPECIAL | | |
| 8 | (NSS) | RING, RETAINING | | |
| 9 | 238-44-12210 | O-RING | | |
| 10 | 565-44-12870 | RING, RETAINING | | |
| 11 | (NSS) | SPRING | | |
| 12 | 238-44-12230 | PISTON, RELAY | | |
| 13 | (NSS) | O-RING | | |
| 14 | (NSS) | O-RING | | |
| 15 | 238-44-12260 | SPRING, RETURN | | |
| 566-35-00140 | STEM ASSEMBLY | | |
| 16 | 238-44-12270 | STEM | | |
| 17 | (NSS) | SPRING, INNER | | |
| 18 | (NSS) | SPRING, OUTER | | |
| 19 | 238-44-12310 | SLEEVE | | |
| 20 | 238-44-12320 | WASHER | | |
| 21 | 238-44-12330 | PISTON, UPPER | | |
| 22 | (NSS) | SPRING, RUBBER | | |
| 23 | 238-44-12350 | SEAT, RUBBER SPRING | | |
| 24 | 01580-10605 | NUT | | |
| 25 | 01602-20619 | WASHER, SPRING | | |
| 26 | 01643-30623 | WASHER | | |
| 27 | (NSS) | O-RING | | |
| 28 | (NSS) | BODY | | |
| 421-35-15990 | VALVE ASSEMBLY, LOWER | | |
| 29 | (NSS) | VALVE, LOWER | | |
| 30 | 238-44-12390 | RETAINER | | |
| 31 | (NSS) | SPRING | | |
| 32 | 238-44-12420 | RETAINER | | |
| 33 | (NSS) | O-RING | | |
| 34 | 238-44-12440 | WASHER, SPECIAL | | |
| 35 | (NSS) | RING, RETAINING | | |
| 36 | (NSS) | O-RING | | |
| 37 | 238-44-12470 | COVER, EXHAUST | | |
| 38 | 238-44-12480 | VALVE, EXHAUST | | |
| 39 | 01220-40510 | SCREW | | |
| 40 | 01601-20513 | WASHER, SPRING | | |
| 41 | (NSS) | O-RING | | |
| 42 | 01010-50620 | BOLT | | |
| 43 | 01602-20619 | WASHER, SPRING | | |
| 44 | 421-35-15190 | PLATE ASSEMBLY | | |
| 45 | 421-35-15270 | PLUNGER | | |
| 46 | 238-44-12530 | BOOT | | |
| 47 | 421-35-15290 | TREADLE | | |
| 48 | 238-44-12550 | BOOT | | |
| 49 | 238-44-12590 | PIPE | | |
| 50 | 238-44-12560 | PIN | | |
| 51 | 238-44-12570 | PIN | | |
| 52 | 238-44-12580 | ROLLER | | |
| 53 | 238-44-12610 | PIN, COTTER | | |
| 54 | 01252-30820 | BOLT | | |
| 55 | 01580-10806 | NUT | | |
| 56 | 01010-50825 | BOLT | | |
| 57 | 01602-20825 | WASHER, SPRING | | |
| N/I | 238-44-05030 | SERVICE KIT, TREADLE VALVE | | |
| N/I | 421-35-05110 | SERVICE KIT, TREADLE VALVE SPRINGS | | |
| | | | |
| | F1 - INCLUDED IN SERVICE KIT 238-44-05030. | | |
| | | | |
| | F2 - INCLUDED IN SERVICE KIT 421-35-05110. | | |
| | | | |
