Drivebelt came off while driving?

The drive belt needs inspection.When a belt comes off, it's usually because of a bad bearing in one of the accessories or idler pulleys, or maybe your tensioner spring is broken. Remove the belt and check all pulleys for spin and play. It is also possible you lost an idler pulley and the new belt routing is not turning the water pump in the right direction. Check the routing and look for a missing idler pulley. Let me know if you are missing the routing diagram.

Serpentine belt also known as drive belt or Accessory belt.
Belts are made of reinforced synthetic and/or hard rubber, belts are usually v-channeled or ribbed serpentine They're used to drive accessories including the alternator, water pump, AC compressor, power steering, air pump, vacuum pump and injector pump. They're usually driven by the engine's crankshaft pulley and are fully adjustable by tensioners or idlers that follow or track the surface of the belt.

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This detailed diagrams will help you.
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If you need dis-assembly or replacement instructions for any other auto/car part, or you want to ask question related to your car/truck jeep problem then please leave the comment with your details, so I can provide you the required instructions and solutions.

Go through this list for drive belt routing diagrams and help:-----------
Timing belt routing diagrams for cars and trucks? Click the link below:---http://technoanswers.blogspot.com/2011/10/timing-belt-routing-diagrams-for-cars.html

Drive belt routing diagrams for cars and trucks? Click this link below:---http://technoanswers.blogspot.com/2011/10/drive-belt-routing-diagrams-for-cars.html
 

How to route the serpentine belt?

http://carbeltrouting.blogspot.com/2011/12/how-to-route-serpentine-belt.html

2000 Ford windstar serpentine belt Replacing diagram?

http://carbeltrouting.blogspot.com/2011/12/2000-ford-windstar-serpentine-belt.html

1994 Mercedes-Benz C 280 Drive Belt Routing?

http://carbeltrouting.blogspot.com/2011/12/1994-mercedes-benz-c-280-drive-belt.html

2002 Chevrolet Truck Trailblazer Accessory Belt Diagram?

http://carbeltrouting.blogspot.com/2011/12/2002-chevrolet-truck-trailblazer.html

Ford Escort Serpentine Engine Belt Routing Diagram?

http://carbeltrouting.blogspot.com/2011/12/ford-escort-serpentine-engine-belt.html

2000 Chevrolet Cavalier Serpentine belt routing directions?

http://carbeltrouting.blogspot.com/2011/12/2000-chevrolet-cavalier-serpentine-belt.html

How to route new serpentine belt on Mazda B3000?

http://carbeltrouting.blogspot.com/2011/12/how-to-route-new-serpentine-belt-on.html

Dodge cummins 5.9L diesel engine drive belt routing?

http://carbeltrouting.blogspot.com/2011/12/dodge-cummins-59l-diesel-engine-drive.html

2005 Dodge Dakota 3.7 Drive belt routing?

http://carbeltrouting.blogspot.com/2011/12/2005-dodge-dakota-37-drive-belt-routing.html