Testing of returned EGR Coolers from the field shows increased trends of No Trouble Found (NTF).

One common denominator in claims analysis is the observation of narratives such as “Coolant

leaks” which is correlated to the presence of liquid or wetness in the EGR Cooler during

inspection. However, this liquid or wetness presence can be tied to water as a byproduct of the

combustion process and that can be an important contributor to NTF.

Please review the EGR Cooler testing procedures below and cascade as needed:

Heavy Duty --- 011-019 EGR Cooler

Mid-Range --- 011-019 EGR Cooler