CATEngine Parts

247-8790 Bucket Cylinder Seak Kit — Cat 325D

This bucket cylinder seal kit is designed to replace worn seals within the hydraulic cylinder of the excavator's bucket, preventing fluid leaks and maintaining hydraulic pressure. Manufactured to meet OEM specifications, these seals offer superior durability and sealing performance compared to degraded or damaged original seals. Operators may notice slow or jerky bucket movements, external hydraulic fluid leaks around the cylinder, or a loss of lifting/dumping force when this kit is needed.

Bucket Cylinder Seak Kit – Part No 247-8790 – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

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.

Part TypeHydraulic Cylinder Seal Kit
MaterialNBR rubber, Polyurethane
ApplicationExcavator bucket cylinder
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of failing bucket cylinder seals is often visible hydraulic fluid leakage around the cylinder rod or casing. This can lead to sluggish or inconsistent bucket operation, such as slow curling or dumping. If left unaddressed, significant fluid loss can cause the hydraulic system to lose pressure, severely impacting the machine's operational capability.

Installation Tip

Thoroughly clean the cylinder bore and rod to remove any dirt or debris that could damage the new seals during installation. Ensure all seals are properly seated and lubricated with clean hydraulic oil before reassembly.

Service Note

Inspect the cylinder rod for scoring or damage, and check the hydraulic fluid for contamination when replacing the bucket cylinder seals.