Serpentine Belt issue

[Engir]

I replaced the belt on my 4.0 87 XJ the belt I bought from amazon is below. Amazon says this is correct for my XJ but it is not the belt is not wide enough as you can see in the images below. The first two are the power steering pulley, the third is the Alternator, fourth is the harmonic balancer pulley, and the last shows the ridges on the belt to me the belt needs to be one more groove wider? Anyone know what is going on?

Amazon.com

 

[mark sr]

It's been a long time since I had an XJ but seems like the belt was always a tad narrower than the pulley.

 

[superj]

I would be fine running the belt on groove thinner

 

[Engir]

I would be fine running the belt on groove thinner

The problem is the belt is moving around on the pulleys and fraying the edges. This makes me think I need a wider belt. That is why I posted here wondering if anyone noticed this issue and what did they do to solve the issue.

 

[JPNinPA]

Is it narrower compared to the old belt? Also compare the ridges spacing, not just the width.

Also, in your picture, it looks like you have it misaligned on one of the police, which may result in it wandering around


Never look down on anyone unless you are helping them up - Jesse Jackson

 

[Engir]

Is it narrower compared to the old belt? Also compare the ridges spacing, not just the width.

Also, in your picture, it looks like you have it misaligned on one of the police, which may result in it wandering around


Never look down on anyone unless you are helping them up - Jesse Jackson

This was right after I got the Jeep, the old belt was frayed on the outer edge and looked old, that is why I replaced it. When I compared the two it was the same as the old belt in every way. I did not think anything of it at the time. Now the new one is starting to fray, and a mechanic that has been doing some work on it for me is telling me the belt is wrong, that it is too narrow. I started looking at it and it does seem he is right for the pulleys it should be one wider. This made me think someone swapped the pulleys with something else but looking at the pulleys and the alternator for my Jeep online dispelled that idea.

I do not under stand why Jeep would put pulleys with five groves and use a belt with four?