Komatsu WA380-1LC Wheel Loader Fig No. 3621 Treadle Valve Parts
Komatsu WA380-1LC fig no. 3621 treadle valve parts for machine serial A45001-UP. View this configuration's diagram, part numbers, quantities and options; shop or request a quote.
Catalog configuration: Drive Shaft, Axles Wheels & Brake Systems / Fig No. 3621 Treadle Valve.
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Aftermarket parts reference illustration · Click to enlarge. Actual supplied parts may differ.
Assembly parts
Showing all 63 part occurrences
Select any parts and adjust quantities. Store products go to your cart; parts without a store match go into a quote request. Each button handles only its matching selections.
| Line | Part number | Description | Qty | Order qty | Purchase options | |
|---|---|---|---|---|---|---|
| 0 | VALVE ASSY, TREADLE | 2 | View product ↗ | |||
| 1 | BODY, UPPER | 1 | Request quote | |||
| 2 | VALVE ASSY, UPPER | 1 | Request quote | |||
| 2 | VALVE, UPPPERF1 | 1 | Request quote | |||
| 3 | RETAINER | 1 | Request quote | |||
| 4 | SPRINGF2 | 1 | Request quote | |||
| 5 | RETAINER | 1 | Request quote | |||
| 6 | O-RINGF1 | 1 | Request quote | |||
| 7 | WASHER, SPECIAL | 1 | Request quote | |||
| 8 | RING, RETAINERF1 | 1 | Request quote | |||
| 9 | O-RINGF1 | 1 | Request quote | |||
| 10 | RING, RETAININGF1 | 1 | Request quote | |||
| 11 | SPRINGF2 | 1 | Request quote | |||
| 12 | PISTON, RELAY | 1 | Request quote | |||
| 13 | O-RINGF1 | 1 | Request quote | |||
| 14 | O-RINGF1 | 1 | Request quote | |||
| 15 | SPRING, RETURNF2 | 1 | Request quote | |||
| 17 | STEM ASSY | 1 | Request quote | |||
| 16 | STEM | 1 | Request quote | |||
| 17 | SPRING, INNERF2 | 1 | Request quote | |||
| 18 | SPRING, OUTERF2 | 1 | Request quote | |||
| 19 | SLEEVE | 1 | Request quote | |||
| 20 | WASHER | 1 | Request quote | |||
| 21 | PISTON, UPPER | 1 | Request quote | |||
| 22 | RUBBER, UPPER PISTONF2 | 1 | Request quote | |||
| 23 | SEAT, SPRING | 1 | Request quote | |||
| 24 | NUT | 1 | Request quote | |||
| 25 | WASHER, SPRING | 1 | Request quote | |||
| 26 | WASHER | 1 | View product ↗ | |||
| 27 | O-RINGF1 | 1 | Request quote | |||
| 28 | BODY, LOWER | 1 | Request quote | |||
| 31 | VALVE ASSY, LOWER | 1 | Request quote | |||
| 29 | VALVE, LOWERF1 | 1 | Request quote | |||
| 30 | RETAINER | 1 | Request quote | |||
| 31 | SPRINGF2 | 1 | Request quote | |||
| 32 | RETAINER | 1 | Request quote | |||
| 33 | O-RINGF1 | 1 | Request quote | |||
| 34 | WASHER, SPECIAL | 1 | Request quote | |||
| 35 | RING, RETAININGF1 | 1 | Request quote | |||
| 36 | O-RINGF1 | 1 | Request quote | |||
| 37 | COVER, EXHAUST | 1 | Request quote | |||
| 38 | VALVE, EXHAUSTF1 | 1 | Request quote | |||
| 39 | SCREW | 4 | Request quote | |||
| 40 | WASHER, SPRING | 4 | View product ↗ | |||
| 41 | O-RINGF1 | 1 | Request quote | |||
| 42 | BOLT | 4 | View product ↗ | |||
| 43 | WASHER, SPRING | 4 | Request quote | |||
| 44 | PLATE, MOUNTING | 1 | Request quote | |||
| 45 | PLUNGER | 1 | Request quote | |||
| 46 | BOOT | 1 | Request quote | |||
| 47 | PEDAL, TREADLE | 1 | Request quote | |||
| 48 | BOOT | 1 | Request quote | |||
| 49 | SPACER | 1 | Request quote | |||
| 50 | PIN | 1 | Request quote | |||
| 51 | PIN | 1 | Request quote | |||
| 52 | ROLLER | 1 | Request quote | |||
| 53 | PIN, COTTER | 2 | Request quote | |||
| 54 | SCREW, SET | 1 | Request quote | |||
| 55 | NUT | 1 | Request quote | |||
| 56 | BOLT | 3 | Request quote | |||
| 57 | WASHER, SPRING | 3 | View product ↗ | |||
| 61 | SERVICE KIT, TREADLE VALVE | 1 | View product ↗ | |||
| 62 | SERVICE KIT, TREADLE VALVE SPRINGS | 1 | View product ↗ |
Repeated parts remain separate. Source order is retained; diagram callout mapping has not yet been verified.
Assembly notes
F1 - INCLUDED IN SERVICE KIT 238-44-05030
F2 - INCLUDED IN SERVICE KIT 421-35-05110
Using Komatsu WA380-1LC Wheel Loader Fig No. 3621 Treadle Valve Parts
Use the Komatsu WA380-1LC Wheel Loader Fig No. 3621 Treadle Valve Parts listing to identify aftermarket replacement parts within the drive shaft, axles wheels & brake systems section. This wheel loader application is listed for machine serial A45001-UP; the diagram and parts table retain the selected configuration and its source notes.
The parts table contains 63 listed part occurrences, including valve assy, treadle (reference 421-35-11400), body, upper (reference NSS) and valve assy, upper (reference 566-35-00130). Read any option and reference notes beside these entries before choosing a replacement; repeated references may represent separate positions in the source list.
For axle, driveline and brake-related parts, follow the assembly location and machine serial applicability. Keep front/rear and left/right distinctions, along with any equipment options recorded in the parts list.
Catalog quantities describe the illustrated assembly. Adjust the order quantity to what you need, select the relevant rows, and use Add selected to cart for verified store matches or Add selected to quote for quote items. The diagram alone does not establish current stock or part interchangeability.