This is a boom cylinder seal kit designed to maintain hydraulic pressure within the boom lift cylinder of Volvo excavators. It is manufactured to meet stringent OEM material and dimensional standards, preventing internal and external fluid leaks, unlike a worn or damaged seal. Operators may experience slow or jerky boom movement, loss of holding pressure, or visible hydraulic fluid leaks from the cylinder rod 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.
Early signs of failure include a slow drift of the boom when holding a position or a slight external leak from the cylinder rod. If left unaddressed, the cylinder will lose its ability to hold heavy loads, leading to uncontrolled descent of the boom. Continued operation can result in significant hydraulic fluid loss and potential damage to the cylinder rod.
Carefully inspect the cylinder rod for any imperfections before installing the new seals, as even minor damage can compromise the seal's integrity. Ensure all sealing surfaces are clean and lubricated with clean hydraulic fluid during assembly.
Inspect the cylinder rod for scoring or damage, and check the hydraulic fluid level and condition before reassembling the boom cylinder.