CATEngine Parts

3g-7656 Hydraulic Pump Cartridge — Cat 3306 3406

This hydraulic pump cartridge is a critical component responsible for generating the necessary hydraulic pressure for machine functions. Manufactured to high standards, it ensures efficient fluid transfer and consistent performance, unlike a worn cartridge which may exhibit reduced flow or internal leakage. Operators may observe sluggish hydraulic operation, decreased lifting capacity, or unusual noises from the hydraulic pump when this part is failing.

Hydraulic Pump Cartridge – Part No 3g-7656 – 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 and Bronze
ApplicationMain Hydraulic System
Service LifeReplace based on performance degradation or hours
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial symptoms include a noticeable decrease in hydraulic system performance, such as slower boom or bucket movements. If left unaddressed, the pump may lose significant pressure, leading to a drastic reduction in machine productivity. Prolonged operation with a failing cartridge can cause overheating of the hydraulic system and potential damage to other components.

Installation Tip

Thoroughly flush the hydraulic system and replace the hydraulic filter before installing the new cartridge to prevent contamination. Ensure the cartridge is correctly oriented and seated before reassembling the pump housing.

Service Note

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