This seal kit is engineered to replace the worn seals within the boom cylinder of Volvo excavators, preventing hydraulic fluid leaks and maintaining consistent lifting force. It is manufactured to strict quality standards, ensuring a reliable seal that outperforms degraded original seals. Operators may observe a slow drift of the boom when not actively lifting, external fluid leaks around the cylinder rod, or a noticeable reduction in the cylinder's lifting capacity when these seals fail.
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 initial symptom of a failing boom cylinder seal is often a slow, unintended lowering or drifting of the boom when the control lever is in neutral. If ignored, the leak will worsen, leading to a significant loss of lifting force and visible hydraulic fluid leaks. This can compromise the machine's ability to hold loads and potentially cause damage to the cylinder or surrounding components.
Ensure the cylinder rod is perfectly clean and free of any burrs or imperfections before sliding on the new seals. Never use a sharp object to pry or force seals into their grooves.
Inspect the cylinder rod for scoring or pitting, and check the hydraulic fluid level and condition.