Do it yourself
Frequently asked questions about cars and motorcycles

How to Replace the Alternator Pulley

Model: (Various brands) Various
Part: Alternator

To replace the alternator pulley, you need to use a specific kit following the steps outlined below. Once the alternator is removed, secure it in a vice to hold it stable. To remove the pulley, you must use a specific kit that includes a torque wrench and another tool known as a 'multi-spline' key. Insert the torque wrench into the pulley to lock the main pin, while the 'multi-spline' key should be inserted into the friction pulley to hold it in place. Thus, use the torque wrench to secure the pin and the 'multi-spline' key to release the pulley.

Updated on 24 June 2026 by ScegliAuto

Video tutorial

Related tutorials

(Various brands) Various To replace the alternator pulley on a car, you need to completely remove the alternator from its housing by unscrewing the bolts that secure it in pl…
(Various brands) Various As shown in the video, removing the alternator pulley is a similar operation for all cars with some minor variations. Ensure you have a new pulley to…
(Various brands) Various To replace the alternator pulley without the use of a kit, you need to have a nut of the correct size for the pulley shaft; a welder to attach the nu…

Other guides you may be interested in

How to replace the horn on a Renault Duster - Dacia Duster

Today's main instructions will show you the procedure for removing and replacing the horn or sound signal on the Renault Duster, as well as the Dacia Duster. First, open the bonnet of the vehicle and start removing the front bumper by unscrewing all the fixing screws; you will find the horn right in front of the radiator, as shown in the video. At this point, disconnect the electrical connector and unscrew the bracket screw to remove and replace the horn with the new one; finally, reassemble the front bumper!

Watch the video!


by ScegliAuto

More videos