CATEngine Parts

352-6869 Relief Valve — Cat 325D C15

This is a relief valve, a critical component in the hydraulic system that regulates and limits system pressure. It protects hydraulic components from damage caused by over-pressurization by automatically opening to vent excess fluid. A malfunctioning relief valve can lead to erratic hydraulic system performance, such as jerky movements or a complete loss of function, and may cause overheating due to constant fluid bypass.

Relief Valve – Part No 352-6869 – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeRelief Valve
MaterialSteel, brass
ApplicationHydraulic system pressure regulation
Service LifeReplace if faulty or pressure is inconsistent
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Erratic or sluggish hydraulic operation, such as slow boom or bucket movement, is a common symptom of a faulty relief valve. The hydraulic system may also overheat due to continuous fluid bypass if the valve is stuck open or set incorrectly. In severe cases, the system may fail to generate sufficient pressure for any hydraulic functions.

Installation Tip

Ensure the hydraulic system is properly depressurized before attempting to remove or install the relief valve to prevent injury. Clean the valve mounting port thoroughly to avoid introducing contaminants into the system.

Service Note

Check the hydraulic fluid level and condition, and inspect the hydraulic filter for signs of contamination.