This Boom Cylinder Seal Kit provides all the necessary seals and O-rings to rebuild a hydraulic boom cylinder, essential for lifting and positioning the excavator boom. It is manufactured from high-quality materials to withstand high pressures and harsh operating conditions, ensuring a leak-free seal unlike worn or damaged seals. Operators may notice hydraulic fluid leaks from the cylinder rod, slow boom operation, or a tendency for the boom to drift downwards when this kit is needed.
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.
Visible hydraulic fluid leaks from the boom cylinder rod or casing are the most common initial sign of seal failure. If ignored, the cylinder may lose pressure, resulting in slow or weak boom movement and a tendency for the boom to drift down under load. This can compromise the operator's ability to precisely control the boom, affecting digging efficiency and potentially causing instability.
Thoroughly clean the cylinder bore and rod before installing new seals to prevent damage from debris. Ensure all seals are lubricated with appropriate hydraulic fluid or assembly lube before insertion to prevent tearing.
Inspect the cylinder rod for scoring or damage, and check the piston and gland for wear that could compromise the new seals' effectiveness.