Mack SCR Familiarization training

This training provides an introduction to exhaust aftertreatment technology, called selective catalytic reduction, or SCR, that is used on EPA-10 and later Mack trucks. It reviews components, system operation, driver indications, maintenance considerations and diagnostics.

You have the option to test out of this eLearning by passing the test associated with the course. There are a maximum of 5 attempts allowed; if you do not pass the test on first attempt it is highly recommended to take the course before attempting the test again.