CATEngine Parts

125-4527 Hydraulic Pump — Cat 3516 3516B

This is a CAT Hydraulic Pump designed to supply pressurized fluid to operate hydraulic systems in heavy machinery. It is manufactured to meet stringent OEM quality standards, ensuring superior performance and durability compared to worn or failing units. Operators may notice a loss of hydraulic power, sluggish operation, or unusual noises from the pump if it is failing.

Hydraulic Pump – Part No 125-4527 – 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 alloys
ApplicationMain hydraulic system
Service LifeReplace based on condition and operating hours
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing hydraulic pump may initially present as a gradual decrease in the speed and power of hydraulic functions. If left unaddressed, this can lead to intermittent operation and increased cycle times. Continued operation with a compromised pump risks damage to other hydraulic components due to insufficient flow or pressure.

Installation Tip

Ensure the hydraulic reservoir is filled to the correct level with the specified fluid before starting the pump to prevent dry running. Avoid cross-threading any fittings during installation, as this can lead to leaks and system contamination.

Service Note

Inspect and replace hydraulic filters and check the hydraulic fluid for contamination when servicing the hydraulic pump.