CATEngine Parts

375-0750-375-0749 Bucket Cylinder Seal Kit — Cat 306 306E

This is a hydraulic cylinder seal kit designed to replace worn seals within the bucket cylinder of heavy machinery. It ensures the hydraulic system maintains optimal pressure and prevents fluid leakage, crucial for efficient operation. A failed seal kit will manifest as slow or jerky bucket movements, external hydraulic fluid leaks, and a loss of lifting power.

Bucket Cylinder Seal Kit – Part No 375-0750-375-0749 – 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 bronze composite
ApplicationBucket cylinder sealing
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of a failing bucket cylinder seal kit is often a noticeable increase in cycle time or a slight drift in the bucket when holding a position. If ignored, the leakage will worsen, leading to a significant loss of hydraulic pressure and potentially uncontrolled bucket movement. Continued operation with a severely compromised seal kit risks damage to the hydraulic pump and system components due to low pressure.

Installation Tip

Ensure the cylinder bore and rod are meticulously cleaned to prevent debris from damaging the new seals during installation. Avoid using sharp tools that could scratch or nick the sealing surfaces when inserting the new seals.

Service Note

Inspect the hydraulic fluid for contamination and consider a fluid flush if the old seals have significantly degraded.