Timing Belt

[Sunnyc123abc]

So I just purchased a 2004 4runner v8 4x4 limited and I don't believe the timing belt has ever been changed. The truck has 136,000 miles on it. I took the cover of the passenger side cam and was wondering if you guys could tell me if the belt looks ok to run until i get it changed. To me it looks fine, but I dunno.

 

[obxfishn]

When in doubt, change it out. Damn...I'm a poet and didnt even know it.

 

[T4RBoarder]

Sometimes belts don't show any physical evidence of wear before they break, I'd say anything after 90k is a gamble but some people have gone twice the interval without replacement.

 

[03_4x4Runner]

I am seeing wear on your belt teeth (cogs?) next to the pulley. Past time to change it.

 

[captainjohn]

The pictures you're showing appear to have a part number on the belt... you can attempt to compare that part number to toyota part numbers to verify if it's a genuine belt or has already been replaced by an aftermarket part once. Genuine belts are possibly (but not definitely) original, and, aftermarket.. well, you might have some time.

As for what I'd look for - I'd be looking for small cracks where the teeth of the belt meet the flat part. You cannot determine this from the picture provided. Also, don't dare twist the belt to view this, you'll likely damage it.

I've broken 1 timing belt in my life, and, I guess it wasn't an interference engine. I found a pile of rubber teeth in the lower timing belt cover. Changed the belt and was on my way.

-John

 

[810moto]

how long does it "normaly" take one to change the belt as a DIY option? im at 93k and it's on my list.

 

[scottm]

It took me a leisurely weekend to change the T-belt on my Land Cruiser, same engine. Lots of pictures here:
Timing Belt for Dummies writeup

 

[message]

When I had my timing belt changed the mechanic told me there is usually a date/code on the belt that indicates its age. May have to turn it over a couple times and see what you find.