sd 60 question?

[bunkerrattmk2]

i don't know so i'll ask iv'e noticed that on SOO sd 60's there is a oblong box shaped housing on the 3rd radiator fan and on others there is not? what's the difference?

 

[norfolksouthern37]

its a winterization hatch. when its freezing winter,this redirects warm air from the radiator fans into the engine compartment.

just keeps things from freezing.

 

[bunkerrattmk2]

thank you .