This is a comprehensive boom cylinder seal kit, designed to replace all critical seals within the hydraulic boom cylinder of compatible excavators. Manufactured to meet stringent OEM standards, it ensures optimal sealing performance and durability, preventing leaks and maintaining hydraulic pressure. Operators may experience slow or jerky boom movements, external hydraulic fluid leaks from the cylinder, or a loss of lifting capacity if 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 failing cylinder seals is often a slow drift of the boom when not actively being controlled or visible hydraulic fluid leakage around the cylinder rod. If ignored, the cylinder will lose pressure more rapidly, leading to reduced lifting performance and potentially uncontrolled movement. Continued operation with compromised seals can lead to internal cylinder damage and hydraulic system contamination.
Carefully inspect the cylinder rod and bore for any nicks or scoring before installing the new seals, as imperfections will damage the new seals immediately. Ensure all old seal material is completely removed from the grooves.
Inspect the hydraulic fluid for contamination and consider flushing the system if significant leakage has occurred.