When it comes to engine operation, the piston rod is one of the most essential components to keep in check. Commonly referred to as a “connecting rod,” this attaches to the piston to the crankshaft as a way to convert linear motion to circular motion. Crafted from steel or aluminum alloys, these parts can withstand a great amount of pressure and continuous activity. However, there are times when they may become subject to wear that puts engine operation at risk. To help ensure proper engine performance, here are a few common signs that you may need professional piston rod repairs.

3 Signs You Need Piston Rod Repairs

1. Knocking Engine Noise

A loud knocking sound coming from the engine is often a sign that the piston rod is not functioning properly. As the engine speed increases, the sound of the knock will also increase. This problem typically occurs when the rod bearing is damaged or the wrist pin has loosened. Leaving the problem unaddressed will expose your engine components to excessive friction that will eventually cause the entire system to fail.  

2. Oil Problems

Piston rods play a major role in circulating oil throughout the engine. When these rods aren’t functioning properly, the flow of oil may become compromised. For example, you might find that oil pressure is low—an indication that the engine and its components are not properly lubricated. Loose bearings and poor connectivity may also result in excessive oil use or leaking, which in turn, may require you to fill up oil levels more than usual.  

3. Corrosion

If possible, a visual inspection of the part can reveal potential problems that require piston rod repairs. Visible corrosion, for example, is a common sign that the metal has become compromised due to exposure to moisture. To prevent corrosion, it helps to equip rods with hard chrome plating for extra defense. When rods become weak—either due to corrosion or other factors—you might also find that they are bent.

If you’re in need of high-quality piston rod repairs, turn to the specialists at R. A. Heller Co. Based in Cincinnati, OH, this full-service machine shop is equipped with the latest resources necessary to repair engineering components—including piston rods and progressive cavity pumps. Backed with more than 150 years of collective experience, this team understands how to repair or replace parts that fit the exact needs of your machinery—and will deliver reliable performance for years to come. To learn more about these resources, visit this machining and chromium plating specialist online. For questions or estimates, call (513) 771-6100 to speak with a qualified specialist.