This SAE Recommended Practice provides test methods and criteria for evaluating the internal cleanliness and air leakage for engine charge air coolers. This SAE Recommended Practice also provides nomenclature and terminology in common use for engine charge air coolers, related charge air cooling system components, and charge air cooling system operational performance parameters.
This document has been amended to include Air-to-Air Charge Air Cooler (CAC) internal chemical cleanliness as it applies to residual flux from Controlled Atmosphere Brazing (CAB). This chemical cleanliness requirement, which has been added, typically relates to only Natural Gas Engine applications that can be adversely affected by braze flux residue. The CAC debris cleanliness has been modified to include the maximum individual debris particle weight. Those requiring CAC cleanliness results should specify J1726 Chemical Internal Cleanliness, J1726 Debris Internal Cleanliness, or J1726 Chemical & Debris Internal Cleanliness.