This is a main hydraulic pump responsible for generating the high-pressure fluid flow essential for the excavator's primary operational functions. Built to meet demanding performance criteria, it delivers consistent power, unlike a worn unit that suffers from reduced flow and pressure. Operators will typically observe a loss of power and speed in the boom, stick, and bucket movements when this pump is failing.
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 failing main hydraulic pump will first manifest as a general sluggishness in all hydraulic operations. As the condition worsens, the machine may struggle to lift heavy loads or perform digging functions with its usual vigor. Continued operation with a degraded pump risks overheating the hydraulic system and causing damage to other components.
Ensure the hydraulic fluid is clean and free of debris before installation, as contaminants can quickly damage a new pump. Do not operate the pump dry; prime it with hydraulic fluid before initial startup.
It is highly recommended to replace the hydraulic filter and inspect the hydraulic fluid reservoir for cleanliness when replacing the main hydraulic pump.