VolvoHydraulic Parts

11988528 — Control Relief Valve 11988528 For Volvo Excavator Ew180E Ew160E Ewr150E Loader Bl70B Bl71B Bl61 Bl60 Bl71 Bl61B Bl70 Bl60B L50F L45F L50G L45H L50H

This control relief valve is essential for regulating and limiting the maximum pressure within the hydraulic system, protecting components from over-pressurization. Manufactured to meet Volvo's rigorous standards, it offers superior durability and consistent pressure control compared to a worn valve that may leak or fail to regulate pressure effectively. Operators might observe sluggish hydraulic operation, overheating of the hydraulic fluid, or unexpected loss of system pressure when this valve is malfunctioning.

Control Relief Valve 11988528 For Volvo Excavator Ew180E Ew160E Ewr150E Loader Bl70B Bl71B Bl61 Bl60 Bl71 Bl61B Bl70 Bl60B L50F L45F L50G L45H L50H – Part No 11988528 – Volvo Spare Part
Part Specifications
BrandVolvo
CategoryHydraulic 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

Flush hydraulic lines before fitting new components. Use only manufacturer-specified hydraulic fluid. Check O-rings and backup rings for correct orientation. Bleed air from system after installation.

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

Part TypeControl Relief Valve
MaterialHardened Steel
ApplicationHydraulic System Pressure Regulation
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing control relief valve may first manifest as a persistent low-pressure condition in the hydraulic system, causing sluggish or weak operation. If left unaddressed, the valve could stick open, leading to a complete loss of hydraulic power and inability to operate the machine's functions. This can result in significant project delays and potential damage to other hydraulic components due to lack of lubrication.

Installation Tip

Before installation, thoroughly flush the hydraulic system to remove any debris that could cause the new valve to malfunction. Ensure the valve is installed in the correct orientation as indicated by any markings on the valve body.

Service Note

When replacing this control relief valve, it is advisable to inspect the hydraulic filter and check the condition of the hydraulic fluid for signs of contamination or degradation.