Question about Jeep Grand Cherokee

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One of the circles that the belt sits on completely broke off the car.

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The circles you mentioned are called pulleys. If one broke off, generally that's caused by whatever it was supposed to be turning has seized. You need to know which one broke so you can get whatever you need to fix it. There is a pulley for the alternator, water pump, air conditioner compressor and power steering. The one at the lowest point on the engine is the crankshaft drive's the one that turns all of them via the belt. You may also have a few that do nothing other than keep the belt from hitting things (called idler pulleys)
On V8 engines there usually is another that looks like an idler but is spring loaded....that one puts tension on the belt.
A good inexpensive source for parts is a scrap yard, especially for pulleys because they don't wear out and are either good or bad..

Posted on Sep 05, 2010


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