This boom cylinder seal kit is designed to replace worn or leaking seals within the hydraulic boom cylinder of an excavator, maintaining proper hydraulic pressure and preventing fluid loss. It is manufactured to precise specifications to ensure a tight seal and smooth operation, unlike a damaged seal that allows fluid bypass and reduced cylinder performance. Operators may notice a slow or jerky boom movement, the boom drifting down when not actively engaged, or visible hydraulic fluid leaks from the cylinder when the seal kit is compromised.
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 sign of a failing boom cylinder seal is often a noticeable drift of the boom when the hydraulic control is not engaged. This may progress to jerky or slow boom movements, requiring more effort from the operator. If left unaddressed, significant hydraulic fluid loss can occur, leading to reduced lifting capacity and potential damage to other hydraulic components.
Carefully inspect the cylinder bore for any scoring or damage before installing the new seals. Ensure all old seal material is completely removed from the grooves.
Inspect the hydraulic fluid for contamination and check the condition of the piston and rod when replacing the boom cylinder seals.