CATEngine Parts

358-4992 Piston Pump — Cat

This piston pump is a hydraulic component responsible for generating flow and pressure within the machine's hydraulic system, powering functions like steering, lifting, and implement operation. It is engineered to precise tolerances, ensuring efficient fluid transfer and longevity compared to a worn pump that may exhibit reduced output or internal leakage. Observable symptoms of a failing piston pump include sluggish hydraulic functions, loss of system pressure, and whining noises from the pump.

Piston Pump – Part No 358-4992 – 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 TypePiston Pump
MaterialHardened steel, aluminum alloy
ApplicationMain hydraulic system
Service LifeReplace as needed based on diagnostics
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Sluggish or slow hydraulic operations, such as lifting or steering, are often the first signs of a failing piston pump. If ignored, this can lead to a complete loss of hydraulic power, rendering the equipment inoperable and potentially causing damage to other hydraulic components due to lack of lubrication or pressure.

Installation Tip

Ensure the hydraulic system is thoroughly flushed to remove any contaminants before installing the new piston pump to prevent premature wear. Never run the pump dry; always prime it with hydraulic fluid before initial startup.

Service Note

Inspect hydraulic filters, fluid lines, and reservoir for contamination when replacing a piston pump.