Combines replacing late 6600 radiator

I just replaced the radiator on my 7700 and it wasn't as bad as I thought it would be.I'm not sure if the 6600 will be the same but if it is, everything comes out engine side, and the oil cooler etc. do NOT have to come off. Take off the cross bars for the hood, take off the fan mount and fan, then unbolt the shroud(this will also unbolt the radiator itself) and the radiator should come out engine side. This is assuming that the engine compartment is the same size on the 6600. I just did this in August and was surprised it was as easy as it turned out to be. I hear the 20 series are more of a pain. Good luck! I hope this helps

Thanks for the advise! A friend of mine just bought a 7700 this week, I'm going to take a look at it tomorrow to see if it's the same.