This is a CAT bucket cylinder seal kit, containing all necessary seals to rebuild a hydraulic cylinder used for operating the machine's bucket. Manufactured to meet OEM standards, these seals ensure proper hydraulic pressure retention and prevent leaks, offering reliable performance unlike worn or damaged seals. Operators may experience slow or jerky bucket movements, hydraulic fluid leaks around the cylinder, or a loss of lifting/dumping force when the cylinder seals begin to fail.
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.
The initial symptom of failing bucket cylinder seals is often visible hydraulic fluid leakage around the cylinder rod or barrel. This can progress to slow or erratic bucket operation and a reduction in the cylinder's lifting or holding capacity. Continued operation risks complete loss of hydraulic function for the bucket, potentially hindering machine operation.
Carefully inspect the cylinder rod and bore for any scoring or damage before installing new seals, as imperfections will quickly ruin the new seals. Ensure all seal surfaces are clean and lubricated with compatible hydraulic fluid.
Inspect the cylinder rod and bore for scoring or wear, and clean the cylinder housing thoroughly when replacing seals.