I agree with LouNY, on my TYM273 when I changed the water pump it was much easier and far more room to work with the radiator out of the way. Also was a great time to do a thorough clean out of radiator at same time.When I changed the one on my 8050 I didn't pull the radiator. It was a royal pain getting the fan bolts off and the fan out and the same going back together. It would have been easier if I had pulled the radiator.