CATEngine Parts

3228733 Hydraulic Pump — Cat 330D 336D

This is a high-performance Hydraulic Pump, the heart of the machine's hydraulic system, responsible for generating the flow and pressure needed to operate actuators like cylinders and motors. Built with precision components and robust materials, it ensures consistent power delivery, unlike a worn pump that exhibits reduced flow, increased heat, and sluggish operation. Operators may notice slow or erratic movement of hydraulic functions, a whining noise from the pump area, or overheating of the hydraulic fluid if this pump is failing.

Hydraulic Pump – Part No 3228733 – 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 Pump
MaterialCast Iron and Steel
ApplicationMain hydraulic system
Service LifeReplace as needed based on performance testing
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first signs of a failing hydraulic pump include sluggish or erratic operation of hydraulic functions, such as boom, stick, or bucket movements. If left unaddressed, the pump's output will continue to decrease, leading to a significant loss of machine productivity and potential overheating of the hydraulic system. Continued operation risks damage to other hydraulic components due to insufficient pressure or contamination from pump wear.

Installation Tip

Thoroughly flush the hydraulic system and replace all filters before installing the new pump to prevent contamination. Ensure the pump shaft is properly aligned with the drive coupling to avoid premature wear.

Service Note

When replacing the hydraulic pump, it is essential to inspect and replace the hydraulic filters, clean the reservoir, and check the condition of all hydraulic hoses and fittings.