CATEngine Parts

118-1143-131-4824 Hydraulic Piston Pump — Cat D250E D300E

This is a CAT Hydraulic Piston Pump, a vital component that generates high-pressure hydraulic fluid flow for the machine's operational systems. It is engineered to meet rigorous OEM quality standards, offering reliable performance and durability over a worn pump that may exhibit reduced flow or internal leakage. Operators may notice sluggish hydraulic functions, erratic boom or bucket movements, or a whining noise from the pump as indicators of failure.

Hydraulic Piston Pump – Part No 118-1143-131-4824 – 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 and aluminum alloy
ApplicationMain hydraulic system
Service LifeReplace as needed based on performance
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Slow or unresponsive hydraulic functions, such as steering or implement movement, are common initial symptoms. If ignored, the pump may progressively lose pressure, leading to intermittent operation and potential overheating of the hydraulic system. The ultimate consequence is the inability to operate critical machine functions, leading to downtime.

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 wear.

Service Note

Always replace the hydraulic filter and inspect the hydraulic fluid for contamination when servicing the hydraulic pump.