CATEngine Parts

8j-8489 11 Gallon Hydraulic Pump — Cat C18

This 11-gallon hydraulic pump is a key component in the machine's hydraulic system, responsible for generating the flow of fluid needed to operate various functions. Manufactured to high standards, it ensures reliable pressure and flow rates, outperforming worn pumps that exhibit reduced efficiency. Operators may notice slow or unresponsive hydraulic functions, such as loader arm movement or steering, when this pump begins to fail.

11 Gallon Hydraulic Pump – Part No 8j-8489 – 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 Pump
MaterialCast iron and steel
ApplicationMain hydraulic system
Service LifeReplace every 4,000-6,000 hours or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a failing hydraulic pump is often a noticeable sluggishness in hydraulic functions, such as boom or bucket movements. As the failure progresses, these functions may become erratic or lose power intermittently, and the hydraulic system may overheat. Continued operation risks complete loss of hydraulic power, rendering the equipment inoperable.

Installation Tip

Thoroughly flush the hydraulic system and replace the hydraulic filter before installing the new pump to prevent contamination. Ensure the pump shaft is properly aligned with the drive coupling to avoid premature wear.

Service Note

Replace the hydraulic filter and inspect the hydraulic fluid for contamination when installing a new hydraulic pump.