CATEngine Parts

448-3702 Gear Pump — Cat C13

This gear pump is a vital component of the hydraulic system, responsible for generating flow and pressure to operate various machine functions. It is constructed from durable materials to meet rigorous performance demands, unlike a worn pump that can exhibit reduced output and increased internal leakage. Operators may notice slow or erratic hydraulic functions, a whining noise from the pump, or a loss of system pressure when this part is failing.

Gear Pump – Part No 448-3702 – 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 TypeGear Pump
MaterialHardened steel gears and cast iron housing
ApplicationHydraulic system
Service LifeReplace based on performance testing or failure
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early signs of a failing gear pump include a noticeable decrease in the speed or power of hydraulic functions, such as boom, stick, or bucket movements. If left unaddressed, this can progress to intermittent or complete loss of hydraulic power, making the equipment difficult or impossible to operate effectively. The primary risk is significant operational downtime and potential damage to other hydraulic components due to insufficient lubrication or pressure.

Installation Tip

Ensure the hydraulic fluid reservoir is filled to the correct level with the specified fluid type before starting the pump to prevent dry running. Always prime the pump by manually rotating the shaft or filling the pump housing with hydraulic fluid before initial startup.

Service Note

When replacing the gear pump, thoroughly inspect the hydraulic system for contamination and consider replacing the hydraulic filter element.