CATEngine Parts

156-9084 Piston Pump — Cat D6N

This is a high-pressure piston pump, a critical component of the hydraulic system responsible for generating flow and pressure. It is engineered to meet stringent OEM performance and durability standards, ensuring reliable operation under demanding conditions. A worn or failed piston pump will typically manifest as sluggish hydraulic functions, loss of power, or complete hydraulic system failure.

Piston Pump – Part No 156-9084 – 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 Piston Pump
MaterialHardened steel alloy
ApplicationMain hydraulic system
Service LifeReplace based on performance degradation
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early signs of a failing piston pump include a noticeable decrease in the speed and power of hydraulic functions, accompanied by potential whining noises. If ignored, the pump's output will continue to diminish, leading to intermittent or complete loss of hydraulic system operation. This can render the equipment inoperable and potentially damage other hydraulic components.

Installation Tip

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

Service Note

Inspect hydraulic hoses, cylinders, and the hydraulic fluid reservoir for any signs of leaks or damage when replacing the piston pump.