CATEngine Parts

4i-1023 Gear Pump — Cat 312 312B

This gear pump is a vital component of the hydraulic system, generating the flow and pressure needed to operate various machine functions. Manufactured to meet stringent OEM quality standards, it provides reliable performance and durability against wear and contamination. A failing gear pump may exhibit symptoms such as slow or erratic hydraulic function, loss of system pressure, or increased noise from the hydraulic pump.

Gear Pump – Part No 4i-1023 – 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 Gear Pump
MaterialCast Iron Housing, Steel Gears
ApplicationHydraulic System
Service LifeInspect annually, replace as needed
CompatibilityCAT 312, 312B, 315, 317, 317N Excavators
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a failing gear pump is often a noticeable sluggishness or loss of power in hydraulic functions, such as boom or bucket movement. If ignored, this can progress to intermittent operation, complete loss of hydraulic pressure, and increased noise from the pump. Continued operation with a worn pump risks damage to other hydraulic components and potential system failure.

Installation Tip

Thoroughly flush the hydraulic system and clean all lines and components before installing the new pump to prevent contamination. Ensure the correct hydraulic fluid type and level are used, and prime the pump according to the manufacturer's instructions.

Service Note

When replacing the hydraulic gear pump, it is essential to inspect and clean or replace the hydraulic filter and check the hydraulic fluid level and condition.