I'm pretty sure this ain't right

Neal

TJ Enthusiast
Original poster
Joined
Nov 15, 2016
Messages
523
Location
Albuquerque, NM
I was getting the LJ ready for a two-day road trip tomorrow, checking fluids and general condition when I saw this, laying on top of the alternator. At first I thought it was a wire that had somehow gotten caught in the works, but then I realized that it was actually part of the fan belt that had been torn off. Also, there was something caught between the belt and the tensioner.
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I removed the belt and it became obvious what the problem was - the tensioner pulley had completely disintegrated, taking part of the belt with it. I haven't looked under the hood in a week or two, so it may have been this way for a while. The interesting thing is that everything that runs off the fan belt has been working just fine - A/C, alternator, P/S and the rest of it acted as if there was nothing at all wrong. Although I have no interest in testing things to find out how long it would take for the belt to finish destroying itself I am glad that it held together for as long as it did, however long that was.
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After installing a new tensioner and belt all is back to normal, I'm ready to hit the road tomorrow.

Old tensioner compared to new one. Yeah, I guess that the pulley would make a difference...
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I had the same problem with the idler pulley on my Dodge Ram. Every so often the belt would squeal for no apparent reason so I figured the belt needed replaced. It was probably a week and a couple hundred miles of that happening before I picked up a belt. I was shocked when I noticed the pulley.

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I'm glad I didn't find out the hard way how long that belt would have lasted