CATHydraulic Parts

3T8359 Gear Pump-Hydraulic — Cat D6H D6H II

This is a hydraulic gear pump designed to supply pressurized fluid to the machine's hydraulic system. It is manufactured to meet stringent quality standards, ensuring reliable performance and durability compared to worn or damaged units. Operators may notice sluggish hydraulic functions, increased cycle times, or a complete loss of hydraulic power when this pump fails.

Gear Pump-Hydraulic – Part No 3T8359 – 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
MaterialHardened Steel Alloy
ApplicationMain Hydraulic System
Service LifeReplace as needed based on performance
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of failure may include a whining or groaning noise from the pump. If ignored, the pump's output will decrease, leading to slower hydraulic functions and increased heat generation in the system. Continued operation with a failing pump risks damage to other hydraulic components due to insufficient lubrication and pressure.

Installation Tip

Thoroughly flush the hydraulic system to remove any debris before installing the new pump. Avoid overtightening the mounting bolts, as this can distort the pump housing and cause premature failure.

Service Note

Inspect the hydraulic fluid reservoir, filters, and hoses for contamination or wear when replacing the gear pump.