CATEngine Parts

126-0980 Hydraulic Piston Pump — Cat 3306

This Hydraulic Piston Pump is a key component in the machine's hydraulic system, responsible for generating high-pressure fluid flow to power actuators and functions. It is engineered to precise specifications for optimal flow rate and pressure, unlike a worn pump that can result in sluggish or erratic hydraulic operation. Operators may experience a loss of hydraulic power, slow boom or bucket movements, or system leaks when this pump begins to fail.

Hydraulic Piston Pump – Part No 126-0980 – 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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Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

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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
MaterialCast iron, steel, seals
ApplicationMain hydraulic system
Service LifeReplace if flow or pressure is low
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The initial symptom of a failing hydraulic piston pump is often a reduction in the speed and power of hydraulic functions. If ignored, the pump's internal wear will worsen, leading to more pronounced sluggishness, erratic operation, and potentially overheating of the hydraulic fluid. Continued operation with a worn pump can lead to complete loss of hydraulic power, rendering the equipment inoperable and risking damage to other hydraulic components.

Installation Tip

Thoroughly flush the hydraulic system to remove any contaminants 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 and filter for signs of contamination or wear, and check all hydraulic hoses and fittings for leaks when replacing the hydraulic piston pump.