CATEngine Parts

254-5145-20r-1842 Hydraulic Piston Pump — Cat 938H IT38H

This is a CAT Hydraulic Piston Pump, a core component responsible for generating high-pressure hydraulic fluid flow to power various machine functions like steering, lifting, and braking. It is engineered to meet stringent OEM performance and durability standards, ensuring consistent operation unlike a worn or leaking pump. Operators may experience slow or erratic hydraulic functions, a whining noise from the hydraulic system, or a loss of system pressure when this pump begins to fail.

Hydraulic Piston Pump – Part No 254-5145-20r-1842 – 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 Piston Pump
MaterialHardened steel and aluminum alloy
ApplicationMain hydraulic system
Service LifeReplace as needed based on performance testing
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early indicators of a failing hydraulic piston pump include sluggish or erratic operation of hydraulic functions, such as slow boom movements or imprecise steering. A noticeable whining or groaning noise from the hydraulic system may also be present. If the pump fails completely, all hydraulic functions will cease to operate, rendering the machine immobile.

Installation Tip

Ensure the hydraulic reservoir is completely drained and clean before removing the old pump. Never run the pump dry; always prime it with clean hydraulic fluid before initial startup after installation.

Service Note

Thoroughly flush the hydraulic system and replace the main hydraulic filter and any other filters in the system when installing a new hydraulic pump.