CATEngine Parts

126-1947 Bucket Cylinder Seal Kit — Cat 320C 320B

This bucket cylinder seal kit is designed to restore the sealing integrity of the hydraulic cylinder, preventing fluid leaks and maintaining optimal system pressure. Manufactured to meet rigorous OEM standards, these seals offer superior resistance to wear and contamination compared to compromised or degraded seals. Operators may observe slow or jerky bucket movements, external hydraulic fluid leaks around the cylinder, or a loss of lifting power when this seal kit fails.

Bucket Cylinder Seal Kit – Part No 126-1947 – 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 and polyurethane
ApplicationExcavator bucket hydraulic cylinder
Service LifeReplace when leaks are detected or during cylinder overhaul
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of a failing bucket cylinder seal kit is often visible hydraulic fluid leakage around the cylinder rod or barrel. If left unaddressed, the leaks will worsen, leading to a gradual loss of hydraulic pressure and reduced lifting capacity. Continued operation can result in internal cylinder damage and potential system contamination.

Installation Tip

Ensure all cylinder bore surfaces and piston grooves are meticulously cleaned before installing new seals. Avoid using sharp tools to pry seals into place, as this can easily cause damage and lead to premature failure.

Service Note

Inspect the cylinder rod for scoring or pitting and check the hydraulic fluid for contamination when replacing the bucket cylinder seal kit.