CATEngine Parts

8j-6730-8j-6731 Axial Piston Pump 8J 6730 — Cat 3304 120G

This axial piston pump is a critical component of the engine's lubrication and oil pressure system, ensuring proper oil flow and pressure for internal engine components. Manufactured to meet stringent OEM standards, it provides superior durability and performance compared to worn units exhibiting reduced flow or inconsistent pressure. Operator symptoms of a failing pump include a persistent low oil pressure warning light, audible engine knocking, and a noticeable decrease in engine power.

Axial Piston Pump 8J 6730 – Part No 8j-6730-8j-6731 – 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 TypeAxial Piston Pump
MaterialHardened Steel Alloy
ApplicationEngine Lubrication System
Service LifeReplace based on oil pressure readings or 5,000 hrs
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A persistent low oil pressure warning light is often the first indication of a failing pump. If ignored, this can lead to increased engine noise, particularly knocking sounds, and a gradual loss of engine power. Continued operation with a compromised pump risks severe internal engine damage due to inadequate lubrication.

Installation Tip

Ensure the oil pickup tube and screen are thoroughly cleaned and inspected for any obstructions before installing the new pump. Avoid overtightening the mounting bolts, as this can distort the pump housing and lead to premature failure.

Service Note

Inspect the engine oil pickup screen and replace the engine oil and oil filter during pump replacement.