There is something about borrowing your buddy's transport, the same one that had his van/yard art at the Oasis for a year . . . not working, that concerns me.
We did know that it had a noisy idler pulley (we even took some spray lube with us),it had the "basic" tool kit (I didn't even look). . . which meant that we would NOT have the needed tool for whatever happened, and it was far too close to the ground for either of us to feel comfortable.
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Sure enough, . . . 50 miles east of the colorado the pulley seized up. That smell of a slipping belt was added to the smell of the desert after the rain.
We stopped and checked under the hood, which was a bit of a team event. One had to grab the hood release cable with some locking jawed pliers, while the other one attempted to lift the hood . . . that had been injured in some previous incident, leaving it somewhat bent up in the middle. This also caused it to flex a lot during full running speed causing us to be concerned about whether it was going to fold back on us and smash the windshielding.
Anyway, after getting access to the drive unit it was quickly determined that 1) it was indeed the pulley, 2) the "basic" tool kit was a few sockets, a driver that fit them, and a multi-tipped screw driver, and 3) I was NOT going to make it spin for another 50 miles.
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That night we spent in one of the traveler's inns after getting flat-bedded into town. The next morning I'm modifying up a pulley that will work with some back spacing . . . and using borrowed tools.