This Main Valve Seal Kit provides all the necessary seals and O-rings to rebuild the main control valve, ensuring proper hydraulic pressure regulation and preventing internal leaks. Manufactured to precise OEM dimensions and material specifications, it restores the valve's integrity, unlike a worn or damaged seal that can lead to fluid bypass and loss of control. Operators may experience issues such as slow or erratic hydraulic movements, loss of holding pressure, or external hydraulic fluid leaks originating from the valve body if the seals 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 sign of failing main valve seals is often a subtle decrease in hydraulic system responsiveness or a slight drift in hydraulic functions. If these seals are not replaced, internal leakage will increase, leading to significantly slower operation, loss of lifting capacity, and potential overheating of the hydraulic oil. This can result in reduced productivity and an inability to perform critical tasks.
Carefully clean all valve spool bores and sealing surfaces before installing new seals to prevent damage and ensure a proper seal. Avoid using sharp tools that could nick or cut the new seals during installation.
When rebuilding the main control valve with this kit, inspect the valve spools and bores for any scoring or wear that might require further attention.