This is a main control valve seal kit for Volvo excavators, crucial for maintaining proper hydraulic pressure and directional control. It contains high-quality seals designed to withstand the high pressures and temperatures of the hydraulic system, preventing leaks and ensuring precise valve operation. Symptoms of worn seals include sluggish hydraulic functions, unintended equipment movement, or a loss of hydraulic system pressure.
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.
Initial signs of failure may include a slight delay in hydraulic response or minor external leaks from the valve body. If left unaddressed, hydraulic functions will become increasingly sluggish, and the system may lose overall pressure, impacting digging and lifting performance. Continued operation risks internal valve damage and potential hydraulic system failure.
Carefully clean all valve components and passages before installing the new seals to prevent contamination. Ensure all seal lips are properly oriented and lubricated to avoid damage during assembly.
Inspect the hydraulic fluid for signs of contamination and check the valve spools for any scoring or wear that could affect the new seals.