CATEngine Parts

325-9786 Piston Pump — Cat D6T

This is a CAT Piston Pump, a high-pressure hydraulic component that converts mechanical energy into hydraulic energy to power machine functions. It is engineered for precise flow and pressure control, ensuring efficient operation unlike a worn pump with reduced displacement or internal leakage. Operators may experience slow or erratic hydraulic functions, loss of power, or whining noises from the hydraulic system when this pump is failing.

Piston Pump – Part No 325-9786 – 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 TypePiston Pump
MaterialHardened steel and aluminum alloy
ApplicationMain hydraulic system
Service LifeReplace as needed based on condition
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early signs of a failing piston pump include sluggish or unpredictable hydraulic movements and a noticeable drop in system pressure. If ignored, this can lead to a complete loss of hydraulic power, rendering the machine inoperable. Continued operation risks damage to other hydraulic components due to inadequate flow or pressure.

Installation Tip

Thoroughly flush the hydraulic system to remove any debris before installing the new pump. Ensure the pump shaft is properly aligned with the drive coupling to prevent premature wear.

Service Note

Inspect the hydraulic fluid for contamination, check the hydraulic filter, and examine all hydraulic lines and cylinders for leaks when replacing the piston pump.