CATHydraulic Parts

8J8813 — Caterpillar Pump Gp - Gear - Hydraulic 8J8813

This is a Caterpillar Gear Pump Gp for hydraulic systems, responsible for generating hydraulic flow and pressure. It converts mechanical energy from the engine into hydraulic power, circulating fluid to operate actuators. A failing gear pump may produce reduced flow, increased noise, or complete loss of hydraulic function, often indicated by sluggish or unresponsive equipment.

Caterpillar Pump Gp - Gear - Hydraulic 8J8813 – Part No 8J8813 – 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 Assembly
MaterialCast Iron and Steel
ApplicationMain Hydraulic System
Service LifeReplace as needed based on performance
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial symptoms of a failing gear pump include a noticeable decrease in hydraulic system performance, such as slower boom or bucket movements. If left unaddressed, the pump's output will continue to degrade, leading to intermittent hydraulic function and potential overheating of the hydraulic fluid. The ultimate consequence is a complete loss of hydraulic power, rendering the equipment inoperable.

Installation Tip

Ensure the pump shaft and mounting surface are clean and free of any debris or old sealant before installation. Avoid overtightening mounting bolts, as this can distort the pump housing.

Service Note

Always replace the hydraulic filter element when installing a new gear pump to prevent contamination from entering the new unit.