This boom cylinder seal kit is essential for maintaining the integrity of the hydraulic cylinder that controls the excavator's boom movement. It contains high-quality seals and wipers designed to prevent hydraulic fluid leakage and contamination, ensuring smooth and powerful boom operation, unlike a worn kit with brittle or degraded seals. Operators may observe hydraulic fluid leaking from the boom cylinder, slow or jerky boom raising/lowering, or the boom drifting downwards when not actively controlled.
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 a worn boom cylinder seal kit is often a visible hydraulic fluid leak from the cylinder rod or at the cylinder base. This leakage will progress, leading to a loss of hydraulic pressure, resulting in slow or weak boom movements and potential drifting of the boom when controls are not engaged. If left unaddressed, significant fluid loss can occur, potentially damaging the cylinder bore and impacting overall machine performance and safety.
Ensure the cylinder rod is perfectly clean and free of any burrs or scratches before installing the new seals to prevent immediate damage. Never reuse old seals or O-rings, as they may not provide an adequate seal and can lead to leaks.
Inspect the hydraulic fluid level and condition, and check the hydraulic pump and control valve for any signs of abnormal operation or wear.