This hydraulic cylinder seal kit is designed to replace worn or damaged seals within the hydraulic cylinder of specific CAT equipment, ensuring proper fluid containment and pressure regulation. Manufactured to meet OEM performance specifications, these seals provide a reliable seal that prevents leaks and maintains hydraulic system efficiency. Operators may observe slow or jerky cylinder movement, external fluid leaks around the cylinder rod, or a loss of lifting/actuation force when this kit is needed.
Always verify with serial number before ordering.
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Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.
External hydraulic fluid leaks from the cylinder rod gland are the most common initial symptom. Cylinder performance may degrade, showing slower actuation speeds or a tendency to drift under load. If left unaddressed, persistent leaks can lead to hydraulic system contamination and reduced operational effectiveness.
Thoroughly clean the cylinder bore and rod before installing new seals to prevent contamination and damage. Avoid using sharp tools that could nick or cut the seal lips during installation.
Inspect the cylinder rod for scoring or damage, and check the hydraulic fluid for contamination when replacing cylinder seals.