CATEngine Parts

3g-7665 Hydraulic Pump Cartridge — Cat 3406 3412

This hydraulic pump cartridge is a precision-engineered assembly that forms the core of a hydraulic pump, responsible for generating fluid flow and pressure within the hydraulic system. Manufactured to meet strict OEM standards, it ensures efficient operation and longevity, unlike a worn cartridge with damaged vanes or seals that can cause reduced flow and increased noise. Operators may notice sluggish hydraulic functions, a whining noise from the pump, or a loss of hydraulic power if this cartridge fails.

Hydraulic Pump Cartridge – Part No 3g-7665 – 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
ApplicationHydraulic pump assembly
Service LifeReplace every 3,000-5,000 hrs or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early signs of a failing cartridge include a noticeable decrease in the speed or power of hydraulic functions, often accompanied by a whining or groaning sound from the pump. If the wear progresses, hydraulic system pressure will drop significantly, leading to a loss of overall machine performance. Continued operation with a worn cartridge can lead to pump seizure and potential damage to other hydraulic components.

Installation Tip

Ensure all internal surfaces of the hydraulic pump housing are meticulously clean before inserting the new cartridge. Never reuse old seals or O-rings; always replace them with new ones appropriate for the cartridge.

Service Note

When replacing a hydraulic pump cartridge, it is crucial to inspect and clean the hydraulic fluid reservoir and filter for any debris.