CATEngine Parts

318-8481 Hydraulic Pump — Cat D6N

This hydraulic pump is a critical component responsible for generating the high-pressure fluid flow required to operate various hydraulic systems on the equipment. It is built to Caterpillar's exacting standards, ensuring reliable performance and durability under demanding operating conditions, unlike a worn pump that loses efficiency and pressure. Operators may experience slow or erratic hydraulic functions, a loss of power, or unusual noises from the hydraulic system when a pump begins to fail.

Hydraulic Pump – Part No 318-8481 – 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 alloy
ApplicationMain hydraulic system power generation
Service LifeReplace as needed based on performance diagnostics
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a failing hydraulic pump is often a noticeable decrease in the speed and responsiveness of hydraulic functions, accompanied by unusual noises like whining or grinding. If ignored, the pump's output pressure will continue to drop, leading to a significant loss of lifting capacity and operational power. The ultimate consequence is the inability of the equipment to perform its intended tasks, potentially leading to extended downtime.

Installation Tip

Ensure the hydraulic system is completely flushed and clean before installing the new pump to prevent contamination. Never run the new pump dry; prime it according to the manufacturer's instructions before initial startup.

Service Note

Always replace the hydraulic filter and inspect hydraulic lines for blockages or damage when installing a new hydraulic pump.