CATHydraulic Parts

3P4405 Caterpillar Gear Pump-Hydraulic 3P4405 — Cat

This is a Caterpillar gear pump designed for the main hydraulic system, providing the necessary fluid flow and pressure for machine functions. It is manufactured to meet stringent OEM quality standards, ensuring durability and performance superior to a worn or damaged pump. Operators may notice a loss of hydraulic power, slow or erratic implement movement, or a whining noise from the pump if it begins to fail.

Caterpillar Gear Pump-Hydraulic 3P4405 – Part No 3P4405 – CAT Spare Part
Part Specifications
BrandCAT
CategoryHydraulic 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

Flush hydraulic lines before fitting new components. Use only manufacturer-specified hydraulic fluid. Check O-rings and backup rings for correct orientation. Bleed air from system after installation.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeHydraulic Gear Pump
MaterialHardened Steel Alloy
ApplicationMain Hydraulic System
Service LifeReplace based on performance degradation
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of a failing gear pump include a noticeable decrease in hydraulic system performance, such as slower boom or bucket movements. If ignored, the pump's efficiency will continue to degrade, leading to intermittent loss of hydraulic functions and potential overheating of the hydraulic oil. Continued operation with a failing pump risks damage to other critical hydraulic components.

Installation Tip

Ensure the hydraulic system is completely clean before installing the new pump, as even small contaminants can cause premature wear. Avoid overtightening mounting bolts, which can distort the pump housing and lead to leaks or internal damage.

Service Note

Inspect the hydraulic filter and oil for signs of metal debris, and check the condition of hydraulic hoses and seals when replacing the gear pump.