CATEngine Parts

170-9827 Bucket Cylinder Seal Kit — Cat Excavator 315B L 317B Ln

This is a comprehensive seal kit designed to replace all the necessary seals within a hydraulic bucket cylinder, restoring its sealing integrity. Manufactured from high-grade NBR rubber and metal components, it ensures robust sealing capabilities superior to worn or cracked seals. Operators will typically observe hydraulic fluid leaks around the cylinder rod or barrel, and a loss of lifting or digging power when this kit is needed.

Bucket Cylinder Seal Kit – Part No 170-9827 – 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, metal, and acetal
ApplicationBucket hydraulic cylinder
Service LifeReplace as needed based on leakage or performance degradation
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of failing bucket cylinder seals is visible hydraulic fluid leakage from the cylinder rod or barrel. If left unaddressed, the leakage will worsen, leading to a noticeable loss of hydraulic pressure and reduced lifting or digging force. Eventually, the cylinder may fail to hold its position under load, impacting machine operation.

Installation Tip

Carefully inspect the cylinder rod and bore for any nicks or scratches that could damage the new seals during installation. Avoid using sharp tools to pry seals into place, as this can easily cause premature failure.

Service Note

When replacing bucket cylinder seals, inspect the hydraulic fluid for contamination and consider replacing the hydraulic filter element.