CATEngine Parts

168-9027 Rexroth Hydraulic Piston Pump — Cat 3056 3056E

This Rexroth hydraulic piston pump is a core component of the hydraulic system, generating the flow and pressure necessary to operate various machine functions. Built to exacting standards, it ensures consistent hydraulic power delivery, unlike a worn pump that may exhibit reduced flow or internal leakage. Operators may experience slow or erratic hydraulic functions, loss of system pressure, or whining noises from the pump when it begins to fail.

Rexroth Hydraulic Piston Pump – Part No 168-9027 – 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
MaterialCast Iron and Steel
ApplicationMain Hydraulic System
Service LifeReplace upon failure or performance degradation
CompatibilityRexroth specification
ConditionNew — Aftermarket

Failure Symptoms

The initial symptom of a failing hydraulic piston pump is often a noticeable decrease in the speed or power of hydraulic functions. This can progress to intermittent operation or complete loss of hydraulic pressure, rendering machine functions unusable. Continued operation with a failing pump can lead to overheating of the hydraulic system and potential damage to other components.

Installation Tip

Thoroughly flush the entire hydraulic system with clean fluid to remove any debris or metal particles before installing the new pump. Never connect hydraulic lines to the new pump before it is securely mounted.

Service Note

When replacing a hydraulic piston pump, it is essential to inspect and replace the hydraulic filter and check the hydraulic fluid reservoir for contamination.