Serpentine Belt Job. How hard is it to do in the driveway?

i wouldn't even attempt it. this is a job better left for the pro's

 

Can’t tell if you’re serious or not

 

hopefully he's not...my buddy and I work in IT..we aren't mechanics and we both were able to do ours in under an hour.

 

My 4.0 is probably similar and it has a locking pin hole on the tensioner that fits a drill bit or Allen key perfectly. It's easily seen from underneath with the skid plate removed

 

I always keep a spare under the back seat in case I lose one on a road trip or off-road somewhere. Easy to do, and better than paying for a tow. I never have lost one on any of our vehicles, but there is always a first time.

 

I keep my old one in the toolbox for emergencies

 

Get a picture of the belt routing for a reference. Start with the crank pulley then loop around the tensioner and under the water pump. It's a tight squeeze. You may need an extra set of hands to slide the belt over the top smooth pulley while you have tension on the tensioner. The 5mm Allen helps for sure. You will probably need a little extra slack though. Be careful that you don't pin your wrench against the oil cooler when you remove the Allen wrench. Triple check that the belt is on every pulley correctly. That water pump pulley can be sneaky. I guess it's obvious that the majority of your work will be done under the truck.

It's a good time to check your idler pulleys. Give them a spin to see if any are getting noisy or loose. If it ain't broke don't fix it. You would probably know already if you had a bad pulley. Snoop around the power steering pump and look for oil leaks. (The infamous time chain cover leak.)

I saw a youtube video from a Toyota Master who swears that an OEM belt is the only way to go. BTW, it's a Bando. He said some aftermarket belts made noise.

Anyway, that's my advice for what it's worth.

It's probably going to take you more time than you expect.

Oh, save that belt in your truck as a spare.