CATEngine Parts

173-3420 Hydraulic Pump — Cat 3176C 3196

This is a hydraulic pump, responsible for generating the flow and pressure necessary to operate the machine's hydraulic systems, such as steering, lifting, and implement control. It is built to OEM standards, ensuring reliable performance and longevity compared to a worn or failing pump. Operators may notice slow or erratic hydraulic functions, a lack of lifting power, or whining noises from the hydraulic system when this pump is experiencing issues.

Hydraulic Pump – Part No 173-3420 – 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, steel alloys
ApplicationMain hydraulic system
Service LifeReplace as needed based on performance or failure
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first symptoms of a failing hydraulic pump typically include a noticeable decrease in the speed and power of hydraulic functions. As the problem worsens, functions may become erratic, jerky, or fail to operate altogether, often accompanied by audible whining or groaning noises. Continued operation with a faulty pump can lead to overheating of the hydraulic system and damage to other hydraulic components.

Installation Tip

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

Service Note

When replacing the hydraulic pump, it is essential to inspect and clean the hydraulic reservoir, flush the system lines, and replace the hydraulic filter.