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How to Replace an Alternator in a 1992 Lumina 3 4

The alternator in a 1992 Chevy Lumina is what supplies the power for everything electrical in the car. The cars alternator is also responsible for keeping the battery fully charged. When the alternator goes bad, none of this happens. Your battery goes dead and you wont be able to start the car anymore. The alternator works on the principle of a magnet moving across a wire inducing current flow and voltage. This voltage and current are internally regulated to levels that are usable by your car.



Changing the alternator in your front wheel drive 1992 Chevy Lumina is a fairly easy project that anyone with the proper tools can accomplish in a couple of hours.

Instructions

Removal of Old Alternator

1

Loosen and remove the negative battery cable from the battery, using the 5/16 wrench. Tuck it out of the way. Ensure that it wont move and make contact with the battery while youre working.

2

Insert the square drive of the ratchet into the square opening on the tensioner pulley and pull the pulley off the serpentine belt. With the tension on the belt released, carefully pull the serpentine belt off the alternator pulley and push it out of the way. Normally, you need to turn this pulley clockwise to release tension.

3

Loosen the two bolts that secure the alternator to the side of the engine closest to the bulkhead between the engine bay and passenger compartment using the ratchet and a 9/16 or 5/8 socket. You need to turn these bolts counter-clockwise to remove them. Set these bolts aside where you can easily reach them during installation.

4

Lift the alternator out of its location. There will be a two wire connectors on the back of the alternator. One is a screw terminal and the other is plug. Both of these need to be removed. Squeeze the connector and pull straight out. Use a 3/8 or 10mm wrench to remove the nut securing the large single wire. Set the old alternator aside as youll need to return it for a core refund.

Installation of the New Alternator

5

Connect the large wire to the lug labeled "BAT" on the back of the alternator and secure it with the nut and washer provided.Use the same wrench you used for removal to tighten the nut. Insert the two wire connector into the connector on the alternator.

6

Lower the alternator into place with one hand and, using the other hand, insert the bolts and thread them in as much as you can by hand. Use the ratchet to make the bolts as tight as you can. The bolts need to be turned clockwise to install them.

7

Route the serpentine belt back onto the alternator pulley and up to the tensioner pulley. Insert the square drive of the ratchet into the square opening on the tensioner pulley and turn clockwise to lift the pulley out of the way. Carefully slide the serpentine belt over the tensioner pulley and slowly let the spring take tension back onto the belt.

8

Reattach the negative battery cable. Use the 5/16 wrench to tighten the terminal bolt clockwise.