This is a seal kit specifically designed for the boom and bucket cylinders of Volvo excavators, containing all necessary seals and O-rings to rebuild a leaking cylinder. It is constructed from high-quality, durable materials engineered to withstand high pressures and harsh operating environments. Failure of these seals will result in hydraulic fluid leaks from the cylinder rod, leading to loss of lifting power and potential contamination of the hydraulic system.
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 failing cylinder seals is visible hydraulic fluid leakage from the cylinder rod or barrel. This can progress to a noticeable loss of lifting force or slow cylinder retraction/extension. If left unaddressed, the leaks can lead to significant hydraulic fluid loss and potential contamination of the hydraulic system.
Thoroughly clean the cylinder bore and piston rod before installing new seals to prevent damage and ensure a proper seal. Avoid using sharp tools when removing old seals or installing new ones, as this can scratch the cylinder surfaces.
When rebuilding a hydraulic cylinder, inspect the piston, rod, and cylinder barrel for any scoring, pitting, or wear that might compromise the new seals.