This is a boom cylinder seal kit designed to replace worn or leaking seals within the main boom hydraulic cylinder of Volvo excavators. It is manufactured to precise specifications to ensure optimal sealing performance and protect the cylinder's internal components. Operators may observe hydraulic fluid leaks from the cylinder rod, slow or weak boom operation, or a tendency for the boom to drift downwards when this seal kit fails.
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 most common symptom of a failing boom cylinder seal kit is visible hydraulic fluid leakage around the cylinder rod. This can progress to a noticeable loss of lifting power or the boom slowly drifting down when not actively being controlled. If left unaddressed, significant leakage can lead to a loss of hydraulic pressure and potential uncontrolled movement of the boom.
Carefully inspect the cylinder rod for any nicks or scratches before installing new seals, as imperfections can quickly damage the new seals. Ensure all seals are seated correctly and lubricated with clean hydraulic fluid to prevent damage during installation and initial operation.
When replacing the boom cylinder seal kit, it is also recommended to inspect the hydraulic fluid and filter for signs of contamination.