How to Change the Fan on a BMW 318


1. Locate the fan motor between the fan shroud and the engine's crankshaft. The motor has a small electrical harness plugged into it. Unplug the electrical harness from the back of the fan motor.
2. Locate the four bolts that secure the fan shroud to the back of the BMW's radiator. Remove the four bolts using a socket and ratchet.
3. Pull the fan shroud with the fan attached to it upward and out of the engine bay. The fan and shroud for the BMW 3-series automobiles comprise to make a single replicable unit.
4. Slide the new shroud and fan into the engine compartment behind the radiator. Line up the bolt-holes and secure the shroud to the back of the radiator using the four bolts, socket and ratchet.
5. Plug the wiring harness back into the fan motor. The harness is self-locking. You will hear it snap into place.