CATEngine Parts

1r-6488 Relief Valve — Cat 3116 EL200B

Name: 1r-6488 Relief Valve — Cat 3116 EL200B
Brand: CAT
SKU: 1r-6488
Availability: InStock

This relief valve is designed to regulate and limit pressure within a hydraulic or engine system, protecting components from over-pressurization. Manufactured to strict specifications, it ensures reliable operation and prevents damage, unlike a worn valve that may stick or leak. A malfunctioning relief valve can manifest as sluggish hydraulic operation, inconsistent pressure, or audible system noise.

Relief Valve – Part No 1r-6488 – CAT Spare Part

Part Specifications

Brand	CAT
Category	Engine Parts
Condition	Aftermarket — OEM Specification
Dispatch	Same-day from Mumbai (before 3 PM IST)
GST Invoice	Available — all orders
Export Docs	Commercial invoice, packing list, COO

Compatible Models

CAT Engine 3116 Excavator El200B E200B

Always verify with serial number before ordering.

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CAT 1r-6488 — Relief Valve | Engine Parts | PTCBuy CAT 1r-6488 — Relief Valve for CAT Engine 3116 Excavator El200B E200B. OEM-spec aftermarket. Same-day dispatch Mumbai. WhatsApp +91-98210-37990.Browse: CAT Parts | Engine Parts | Parts Trading CompanyWhatsApp: +91-98210-37990 | Email: parts@partstrad

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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 Type	Relief Valve
Material	Steel
Application	Hydraulic System / Engine System
Service Life	Replace when faulty or during major overhaul
Compatibility	OEM specification
Condition	New — OEM specification aftermarket

Failure Symptoms

Early signs of a failing relief valve might include a noticeable drop in system performance or inconsistent pressure readings. If the valve sticks open or closed, it can lead to sustained low pressure or dangerously high pressure, respectively. A stuck-open valve can cause the system to operate weakly, while a stuck-closed valve risks severe damage to pumps and actuators due to over-pressurization.

Installation Tip

Ensure the valve seat area is clean and free from any debris or old sealant before installing the new relief valve. Do not overtighten the valve, as this can damage the threads or the valve body itself.

Service Note

Inspect the hydraulic pump or engine oil pump for signs of wear, as a faulty relief valve may have been compensating for reduced performance elsewhere.