This is a bucket cylinder seal kit, designed to replace all the seals within the hydraulic cylinder that actuates the excavator's bucket. It is manufactured to precise tolerances to prevent hydraulic fluid leakage and maintain consistent cylinder operation, unlike worn seals that allow fluid bypass and reduced lifting force. Operators will typically observe slow or jerky bucket movements, or a loss of holding pressure when the bucket is raised.
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 primary symptom of failing bucket cylinder seals is a noticeable drift or slow lowering of the bucket when not actively being operated. If left unaddressed, the cylinder may exhibit jerky movements, reduced lifting capacity, and eventually external fluid leaks, compromising operational efficiency.
Carefully inspect the cylinder rod and bore for any scoring or imperfections before installing the new seals, as these can cause premature seal failure. Ensure all old seal material is completely removed from the grooves.
Inspect the hydraulic fluid for contamination and check the condition of the cylinder rod for any damage or wear.