This is a comprehensive seal kit specifically designed for the boom cylinder of Volvo excavators, containing all necessary seals and O-rings to restore its functionality. Manufactured to OEM specifications, it ensures a tight seal and prevents hydraulic fluid leakage, unlike a worn or damaged kit. Operators will typically notice hydraulic fluid leaking from the cylinder rod, or a loss of lifting power and slow boom movement if the seals have failed.
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 failed boom cylinder seals is visible hydraulic fluid leakage from the cylinder rod. This can progress to a noticeable loss of lifting capacity or slow, uncontrolled descent of the boom under load. Continued operation with leaking seals can lead to system contamination and potential damage to other hydraulic components.
Thoroughly clean the cylinder bore and piston rod before installing new seals to prevent damage from debris. Ensure all seals are lubricated with clean hydraulic fluid or appropriate assembly grease before insertion.
Inspect the cylinder barrel for scoring or damage, and check the condition of the piston and rod itself for wear or deformation during seal replacement.