I need help with my New alternator

[Garcia9876]

I have question for my new alternator for a 2011 4Runner limited with 130 amp OEM not refurbished.

Part# 27060-31190

My question is

When you try to spin the bearing on one side does it get locked?

Is it normal
For a new brand one or not.

 

[DougR]

This video demonstrates how an overrunning pulley works. Start watching at time 1:15. Use caution and do not scratch internal wiring if you elect to use a screwdriver to hold a cooling fin. I choose to quickly spin the pulley with a flick of the hand rather than poking tools into an alternator. The pulley locks up in one direction and free wheels in the other.

https://www.youtube.com/watch?v=-0TOVgXUrw8

Additional information on Toyota OAD pulley diagnosis is available here Alternator Decoupler Pulleys | Toyota Nation Forum