CATEngine Parts

120-0576 Hydraulic Piston Pump — Cat 3516

This is a high-pressure hydraulic piston pump, a vital component for the main hydraulic system of CAT equipment. It is constructed from hardened steel alloys to withstand extreme pressures and continuous operation, offering superior performance over worn or damaged pumps that may show signs of internal scoring or shaft play. Operators may notice slow or erratic hydraulic functions, a loss of lifting power, or whining noises from the hydraulic pump when this part is failing.

Hydraulic Piston Pump – Part No 120-0576 – 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 alloy
ApplicationMain hydraulic system
Service LifeReplace based on performance testing or failure
CompatibilityCAT Engine 3516, Truck 793B
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of a failing hydraulic piston pump is typically a noticeable sluggishness or loss of power in hydraulic functions. This can progress to intermittent operation, complete loss of hydraulic pressure, and potentially overheating of the hydraulic system. Continued operation risks damage to other hydraulic components due to inadequate lubrication or pressure.

Installation Tip

Thoroughly flush the hydraulic system and replace all filters before installing the new pump to prevent contamination. Never run the new pump dry.

Service Note

Inspect the hydraulic fluid reservoir and all hydraulic lines for any signs of internal damage or debris during pump replacement.