Machinery Lubrication

Machinery Lubrication November December 2014

Machinery Lubrication magazine published by Noria Corporation

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40 | November - December 2014 | www.machinerylubrication.com By eLiz aBeth neLson, anaLysts inc. Almost everyone knows how important a properly maintained lubrication system is to optimum engine health, but what most people don't understand is that engine coolant and the cooling system are just as critical to engine design, maintenance and optimum performance. The demands of today's Tier-4 engines have dramatically changed cooling system design and coolant formulation. These heavy-duty diesel engines produce a tremendous amount of power from a relatively small package, placing greater demands on the cooling system to absorb heat transferred from the engine, transmis- sion and hydraulic fluids. At the same time, cooling systems have become smaller and operate at higher temperatures, pressures and flow rates, making efficient heat removal and adequate metal protection even more challenging. While oil analysis is an invaluable condition monitoring tool, it tells you very little about what is happening inside the cooling system. Coolant analysis provides the rest of the story by pinpointing coolant and cooling system issues that can lead to premature engine failure. Cooling System Criticality An estimated 50 percent of all engine fail- ures are associated with problems in the cooling system. Once initiated, these prob- lems can spread through the lubrication, hydraulic and transmission systems, damaging components, causing scale, clog- ging passages and forming deposits. Yet the cooling system is the least understood and most neglected of these systems. Cooling system problems can potentially reduce the life of components within all machinery, which makes maintenance of these systems essential for achieving optimum machine performance and longevity. Coolant analysis takes the guess- work out of maintaining these systems. MAINTENANCE AND RELIABILITY Preventing Premature Engine Failure with Coolant Analysis

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