This Boom Cylinder Seal Kit is essential for maintaining the hydraulic integrity of the boom cylinder on Volvo excavators, preventing fluid leaks and ensuring smooth, powerful lifting operations. It is manufactured with high-quality sealing materials that resist wear and hydraulic fluid degradation, unlike worn seals that allow oil to bypass the piston. Operators may observe a slow-drifting boom when the cylinder is lowered, or a loss of lifting capacity if 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 is a visible hydraulic fluid leak from the cylinder rod or around the cylinder body. If ignored, this leakage will worsen, leading to a gradual loss of boom height when holding a load or slower boom extension. The ultimate consequence is reduced lifting performance, potential hydraulic system contamination from dirt ingress, and increased risk of component damage due to low oil levels.
Carefully inspect the cylinder bore and rod for any scratches or burrs that could damage the new seals during installation. Ensure all seals are lubricated with clean hydraulic fluid before insertion.
Inspect the hydraulic fluid for contamination and check the condition of the cylinder rod and bore for any scoring or wear when replacing the seal kit.