This boom cylinder seal kit is designed to replace worn or leaking seals within the hydraulic boom cylinder of Volvo compact excavators, ensuring proper hydraulic pressure retention and smooth operation. Manufactured to precise dimensions and material specifications, it prevents fluid loss and contamination, unlike a damaged seal that allows oil to escape. Operators may notice hydraulic fluid leaks around the cylinder rod, slow or jerky boom movements, or a loss of lifting capacity 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 a failing seal kit is often visible hydraulic fluid weeping from the cylinder rod seal. If ignored, the leakage will worsen, leading to a gradual loss of hydraulic pressure and slower, less responsive boom movements. Continued operation with a compromised seal kit can lead to internal cylinder damage and contamination of the entire hydraulic system.
Thoroughly clean all internal surfaces of the cylinder bore and inspect the rod for any imperfections before installing new seals. Ensure the new seals are properly seated and not twisted, as this will cause immediate leakage.
Inspect the hydraulic fluid and filter for signs of contamination, and check the cylinder rod for any scoring or damage when replacing the seal kit.