This is a hydraulic cylinder seal kit designed to replace worn seals within the boom cylinder of Volvo excavators. It ensures the integrity of the hydraulic system by preventing fluid leaks and maintaining optimal operating pressure, unlike a damaged seal which allows contamination and pressure loss. Operators may notice a gradual loss of lifting power, slow cylinder retraction, or visible hydraulic fluid leaks around the cylinder rod 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 first sign of failure is often a slow drift of the boom when the engine is off or a slight leak from the cylinder rod. If ignored, the cylinder will lose lifting capacity and retraction speed, leading to reduced machine productivity. Continued operation with a failing seal can lead to internal cylinder damage and potential hydraulic system contamination.
Ensure the cylinder bore is meticulously clean before installing new seals to prevent damage and premature wear. Avoid using sharp tools or excessive force when seating the seals, as this can compromise their integrity.
Inspect the cylinder rod for any scoring or damage, and clean the cylinder bore thoroughly before installing the new seals.