Is replacement of the fan an annual maintenance requirement ?

The main, front fan that keeps the engine from running hot.

no need to replace the fan,if it is working and keeping it cool.temp. sensor tells the fan when to come on and go off.it does not run all the time..

Apparently, it does have to be replaced because when it was replaced it stopped running hot ! Or, the temperature stopped increasing.

that was not your question.you asked was it required replacement annual maintenance?no it's not,unless you are having a problem with it.if it ain't broke,don't fix it!if it is ,fix it!good luck with it........

Thank you, I apologize if I posed the question incorrectly so that you misunderstood the question. I'll try to be more specific in the future. Thanks again.

Happy 4th!!!!!!!!!!!!!!