CATHydraulic Parts

3G4661 Gear Pump-Hydraulic — Cat 153 D5B

This gear pump is a vital component of the hydraulic system, responsible for generating the flow of hydraulic fluid necessary for machine operation. Manufactured to precise tolerances, it ensures consistent pressure and flow rates, unlike a worn pump which would exhibit reduced efficiency and internal leakage. Operators may experience sluggish hydraulic functions, loss of power, or overheating of the hydraulic system if this pump is failing.

Gear Pump-Hydraulic – Part No 3G4661 – CAT Spare Part
Part Specifications
BrandCAT
CategoryHydraulic 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

Flush hydraulic lines before fitting new components. Use only manufacturer-specified hydraulic fluid. Check O-rings and backup rings for correct orientation. Bleed air from system after installation.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeHydraulic Gear Pump
MaterialCast Iron and Steel
ApplicationMain Hydraulic System
Service LifeReplace every 3,000-5,000 hours or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The initial symptom of a failing gear pump is a noticeable decrease in hydraulic system performance, such as slower boom or bucket movements. If left unaddressed, the pump's internal wear will worsen, leading to significant power loss and potential hydraulic system overheating. Continued operation risks damage to other hydraulic components due to insufficient flow or contamination.

Installation Tip

Prime the new gear pump with clean hydraulic oil before installation to ensure proper lubrication upon startup. Avoid forcing the pump onto the drive shaft, as this can damage the shaft or the pump's internal gears.

Service Note

Replace the hydraulic filter and inspect the hydraulic fluid for contamination when replacing the gear pump.