This is a 2nd boom cylinder seal kit, essential for maintaining the integrity of the hydraulic system in Volvo excavators. It ensures proper sealing to prevent fluid loss and maintain consistent pressure for boom operation, performing better than worn seals that allow leakage and reduced lifting capacity. Operators may observe a slow drift of the boom when not actively engaged, reduced lifting power, or visible hydraulic fluid leaks around the second boom cylinder.
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.
Early indications of a failing 2nd boom cylinder seal kit include a slight lag in boom extension or retraction, or a slow, unintended lowering of the boom under load. If ignored, the leakage will worsen, leading to a significant loss of lifting capacity and potentially visible fluid drips. In severe cases, the boom may not hold its position at all, posing a risk of uncontrolled movement.
Carefully inspect the cylinder rod for any imperfections that could damage the new seals before installation. Ensure all old seal material is completely removed from the cylinder housing.
When replacing boom cylinder seals, it is advisable to also inspect the hydraulic fluid for contamination and check the condition of the cylinder rod.