Alternators generate electricity the same way as a DC generator. When the magnetic field in a conductor changes, it sends a current to the conductor. The Toyota Corolla has convenient placement of the alternator -- nearly top dead center of the front of the engine -- making removal and installation an easier task than for some vehicles.
Disconnect the negative battery cable.
Remove the alternator connector and wiring by disconnecting the plastic connector by hand.
Loosen the two alternator bolts connecting the alternator to the alternator bracket.
Remove the alternator belt by sliding it over the alternator pulley after the alternator bolts are loose.
Remove the two alternator bolts and remove the alternator.
Place the alternator in place between the brackets.
Slip the drive belt over the alternator pulley. Install the two alternator bolts using 14 mm and 17 mm wrenches. Torque the 14 mm bolt to 18 foot-pounds and the 17 mm bolt to 40 foot-pounds. This will also tighten the drive belt.
Reconnect the alternator connector and wiring by plugging it in. The wiring will make an audible click sound when properly in place.
Reconnect the negative battery cable.
