CATEngine Parts

3g-1266 Hydraulic Pump Cartridge — Cat 3406 D400

This is a CAT Hydraulic Pump Cartridge, a vital component within the hydraulic pump that generates flow and pressure for the machine's systems. Manufactured to precise OEM specifications, it ensures optimal hydraulic performance and longevity. Operators may notice a gradual decrease in hydraulic system performance, such as slower implement speeds or reduced lifting capacity, if this cartridge wears out.

Hydraulic Pump Cartridge – Part No 3g-1266 – 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 Cartridge
MaterialHardened Steel, Bronze Alloys
ApplicationHydraulic Pump
Service LifeReplace as needed based on hydraulic system performance
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The initial symptom of a worn hydraulic pump cartridge is a gradual reduction in hydraulic system efficiency, such as slower operation of implements or reduced breakout force. If left unaddressed, the pump may lose its ability to generate adequate pressure, leading to significant operational limitations. The consequence is a severely degraded ability to perform work, potentially halting productivity.

Installation Tip

Ensure the inside of the hydraulic pump housing is meticulously clean and free of any debris or metal particles before installing the new cartridge. Avoid rotating the cartridge shaft until it is properly seated and lubricated by hydraulic fluid.

Service Note

When replacing a hydraulic pump cartridge, it is crucial to inspect and clean the hydraulic fluid reservoir and filters for any signs of contamination.