This is an Arm Cylinder Seal Kit designed to replace worn seals within the hydraulic arm cylinder of Volvo excavators. It restores the cylinder's ability to hold pressure and prevent fluid leakage, ensuring smooth and efficient boom and bucket operation. Failure of these seals typically manifests as visible hydraulic fluid leaks around the cylinder rod or a loss of lifting power and slow cylinder movement.
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 primary symptom of a failing arm cylinder seal kit is visible hydraulic fluid leakage from the cylinder rod or around the cylinder body. This will progress to a noticeable loss of lifting capacity, slow or jerky arm movements, and potential inability to hold a position under load. Continued operation risks significant hydraulic system contamination and component damage.
Thoroughly clean the cylinder bore and rod before installing new seals to prevent damage from debris. Ensure all seals are oriented correctly according to the service manual to prevent immediate leakage.
Inspect the cylinder rod for scoring or damage, and check the hydraulic fluid for contamination before installing a new seal kit.