CATEngine Parts

4H2978 Screen As-Suction — Cat 518 518C

This is a suction screen designed to protect hydraulic and lubrication systems from contaminants. It is manufactured to meet stringent quality standards, ensuring it effectively filters debris while maintaining adequate fluid flow, unlike a clogged or damaged screen. Operators may observe a lack of system pressure, erratic hydraulic function, or unusual noises if this component is failing.

Screen As-Suction – Part No 4H2978 – 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 TypeSuction Screen
MaterialMetal mesh
ApplicationHydraulic or lubrication system intake
Service LifeInspect every 1,000 hrs, replace as needed
CompatibilityCAT 518, 518C, 528, 528B, 530B
ConditionNew — CTP aftermarket replacement

Failure Symptoms

A clogged suction screen can lead to a gradual decrease in hydraulic system pressure or flow. If ignored, the pump may cavitate due to restricted fluid intake, causing increased noise and wear. Continued operation with a blocked screen can result in premature pump failure.

Installation Tip

Always clean the area around the suction port thoroughly before removing the old screen to prevent debris from entering the system. Ensure the new screen is properly seated and secured to prevent it from being drawn into the pump.

Service Note

Inspect the hydraulic fluid for contamination and check the condition of the hydraulic pump when replacing the suction screen.