Serpentine Belt Tensioner 2005 Nissan Altima V6 3.5l

Nissan Altima

My boyfriend recently replaced the serpentine belt and the tensioner pulley. The pulley is a manual one and he can’t seem to get the tension right. How do you correctly fix the tension on a manual tensioner pulley? Also, can it be interchanged with an automatic tensioner pulley on this specific vehicle?

From what I am aware of this vehicle came from the factory with an automatic serpentine belt tensioner. I looked it up for the 2005 Altima 3.5 V6. Here is a link to the tensioner:

How to Replace Serpentine Drive Belt

  1. Raise and support vehicle.
  2. Remove wheel and lug nuts from vehicle.
  3. Remove righthand side fender cover.
  4. Rotate or lift belt tensioner arm, using a suitable tool to relieve tension from drive belt.
  5. Remove drive belt from vehicle.
  6. Clean pulleys and inspect for any bent or damaged pulleys.
  7. Reverse procedure to install.