How to Change an Alternator Pulley


When purchasing a new alternator, many come with a new pulley already installed. There are however, some alternators that do not come with a pulley or you may be using a pulley that is different than the one supplied. In these cases, you will need to use the pulley from your old alternator. The following are some points to remember when exchanging pulleys to prevent any damage.

1. Place your alternator in a horizontal position, not placing any pressure to the end of the shaft.

2. Using a hex wrench, begin to remove nut by placing it in the hexagonal hole. Remember, “righty tighty, lefty loosy“.

3. Some alternators use spacers, it is very important for you to make sure they are replaced in the exact position they were in when the pulley was removed.

4. Once pulley has been replaced, spacers (if applicable) are in place, tighten the nut inside the hexagonal hole using your hex wrench and you are good to go.