This is a gear pump, a positive displacement hydraulic pump that generates flow by trapping fluid in meshing gears. It is built to Volvo's exacting standards for material strength and precision gearing, ensuring consistent hydraulic pressure and flow compared to a worn pump that may produce insufficient output or excessive noise. Operators might observe a general sluggishness in all hydraulic functions, or a complete loss of hydraulic power, when this gear pump begins to fail.
Always verify with serial number before ordering.
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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.
A gradual decrease in the speed and power of all hydraulic functions, often accompanied by increased noise from the pump, are typical early signs of a failing gear pump. If ignored, the pump may cease to generate adequate pressure, leading to a significant loss of operational capability and potentially damaging other hydraulic components due to inadequate lubrication. This can render the excavator unable to perform its primary digging and lifting tasks.
Ensure the hydraulic system is completely drained and clean before installing the new pump to prevent contamination. Properly align the pump shaft with the drive coupling, and use the correct mounting hardware to avoid stress on the pump housing.
Replace the hydraulic filter and flush the hydraulic system with clean fluid to remove any debris or wear particles from the old pump.