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Caterpillar 3126 HEUI Systems Replacement and Avoiding Fuel/Oil Cross Contamination

Caterpillar 3126

Follow our recommendations at SRX so you don’t make this common mistake when replacing a Caterpillar 3126 HEUI fuel system.

The C7/3126 HEUI (High-Pressure Electronic Unit Injection) system is a diesel engine fuel system used in heavy-duty vehicles and equipment. HEUI rely on high oil pressure to inject fuel into the engine. Cross-contamination in a HEUI system can occur when engine oil and diesel fuel mix, causing damage to the engine components and reducing performance. Causes of cross-contamination can include a failing injector, clogged oil passages, a damaged high-pressure oil pump, or a malfunctioning oil cooler.

Replace Systems as a Whole

When a component fails, we get asked to replace a single injector. Cutting corners here can cause more headaches down the road. We at SRX recommend replacing the Caterpillar 3126 HEUI system as a whole. 

HEUI systems are designed to deliver precise, accurate fuel metering, which results in improved engine performance and efficiency. This advanced fuel injection technology uses high-pressure oil to activate the injectors, instead of mechanical fuel pumps. The high-pressure oil is supplied by an engine-driven pump and is used to pressurize the fuel in the injectors, which atomizes the fuel and sprays it into the engine cylinders.

HEUI systems offer a number of advantages over traditional diesel fuel injection systems. For example, they are less complex and more reliable, and they require less maintenance. Additionally, they are capable of delivering high-pressure fuel injection, which results in better fuel efficiency and reduced emissions.

Benefits of Remanufacturing

It’s important to choose a high-quality remanufactured engine that has been thoroughly inspected and machined to OEM specifications. This will help ensure that the engine operates reliably, performs well, and is safe to use. Additionally, a remanufactured engine will often cost less than a new engine, making it a cost-effective solution.

If you’re looking for a reliable, high-quality remanufactured engine, look no further than Select Reman Exchange. Our technicians take pride in their workmanship and product quality, and we use trusted engine part manufacturers to supply us with all new piston and liner assemblies, bearings, gaskets, and seals. We also employ technicians who are equipped with skills gleaned from years of experience in the industry, and we use a one technician per engine process to ensure quality control. Furthermore, we back our products with a competitive nationwide warranty, so you can be confident in the quality and durability of your engine.

We Can Help

In conclusion, choosing the right engine parts is crucial to ensuring the reliability, performance, and longevity of your diesel engine. By choosing high-quality HEUI systems and replacing the system as a whole, instead of cutting corners, you can take advantage of the many benefits that this advanced fuel injection technology has to offer. Contact Select Reman Exchange today to learn more about our remanufactured engines and how we can help you get the most out of your diesel engine.

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