Evaporator fan making noise

It was easy deterimining the fan needed replacing because it was very loud. I turned the refrgerator off, removed all the bins and shelves from the freezer. You also need to remove the metal sliders and posts that hold the bins and shelves to get the lower back panel out. the motor can be removed without any tools once its exposed. you first have to pull the fan blade off, just pull up, it slips off easily, disconnect the wires by pulling the connector apart, and to remove the motor, squeeze the bracket together while pushing up, it pops right out. I bought the motor kit which included a new mount and vibration isolator, plus a couple of other items that i didnt need, its a good thing i did because the old vibration isolator had deteriorated and was hard. I recommend that when installing the new motor, insert the vibration isolator into the motor mount in the refrigerator first and then push the new motor into the isolator, it goes in very easy that way. Then put the lower part of the isolator in the bracket and install the bracket. If you try to install the bracket and isolator on the motor first, you will have a difficult time installing it into the bracket in the refrigerator. Finally, install the new fan blade by pushing it onto the shaft, hook up the connector, and turn on the refrigerator. If it works fine, reinstall the cover, shelves and racks.