This is a main hydraulic pump, the heart of the excavator's hydraulic system, responsible for generating the high-pressure flow required to operate all functions. It is built with precision-machined components to meet stringent OEM specifications, ensuring efficient power transfer and preventing the internal leakage or cavitation that would occur with a worn pump. Operators may notice slow or weak hydraulic functions, excessive heat in the hydraulic oil, or unusual noises from the pump if it 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.
The first signs of main hydraulic pump failure often include a noticeable decrease in the speed and power of all hydraulic functions, accompanied by increased noise from the pump. If left unaddressed, the pump can overheat, leading to fluid degradation and potential damage to other hydraulic components, severely limiting or halting machine operation.
Ensure the hydraulic reservoir is filled with the correct type and amount of hydraulic fluid before starting the pump to prevent dry running and immediate damage. Always prime the pump according to the manufacturer's instructions before initial startup after installation.
When replacing the main hydraulic pump, it is essential to replace the hydraulic filter element and thoroughly inspect the hydraulic tank for any signs of internal wear or contamination.