Caterpillar Part reference
Part number 0056523 is cataloged as a poppet described as a check valve. Catalog occurrences show it listed within hydraulic system valve groups on two Caterpillar catalog models, TK1051 and 615C, though these entries are associations rather than confirmed fitment for every machine. Confirm the recorded conditions before ordering.
Recorded applications
Selected catalog references that list this part. A catalog association does not confirm fitment for every machine or configuration.
Catalog context
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| Part number | Description |
|---|---|
| 00***21 | spring |
| 0056523 | poppet; (check valve) (current part) |
| 00***64 | plug |
| 09***59 | seal-o-ring (id=34.40mm) |
Selected entries from this catalog unit. Other part numbers are masked. Confirm the full breakdown and your machine configuration before ordering.
View model pageGeneral guidance
In general, a poppet is a valve element that opens and closes by moving off or onto a seat, and a check valve allows fluid to flow in one direction while blocking reverse flow. In heavy equipment, check valves are used in hydraulic circuits to hold pressure, prevent backflow, and maintain the position of loads.
Use part number 0056523 as the cataloged reference for this poppet check valve. Before ordering, verify the model, serial number and configuration conditions recorded for the catalog occurrences, because they describe the surrounding assemblies and may not apply to every machine.
Catalog references
Locked