Question about 1996 Jeep Grand Cherokee

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1996 Jeep Cherokee Sport - 6 Cyl /4.0 Liter - Crankshaft dampener fell off. Proceedure for reinstall?

I was driving home from work and heard strange banging sound then saw my crankshaft dampener rolling down the road behind me. I had just had a different pulley replaced a month earlier and suspect it may be related to the repair. I would like to do this repair myself, but am unsure of the procedure.

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You will have to buy a new pulley to crankshaft bolt and washer. Or did you find that as well when you picked up the damper? Probably fell off a long time earlier. Buy a used one from salvage, or get one from a Jeep dealer.
The damper should only go on one way. Or there may be a missing woodruff key. It would fit into a slot on the crankshaft, holding the pulley in a set position. If the woodruff key is missing, you will have to find one of them as well.
Working from underneath, remove the "belly pan" mounted below the front of the engine. Book says you MAY need to remove cooling fans and radiator for access-but that is for removing the old pulley with a pulling tool. You may be able to get it all back together without pulling the fans or radiator off. Put a little clean oil on the crankshaft, align the key slot of damper with crank key and tap the pulley on with a soft faced mallet or appropriate tool. Get the pulley on, tighten down the bolt tight as you can get it, then belts back on. Then go to a shop and have someone put an impact tool onto the bolt to torque it down to specs-80 FT-lbs.

Posted on Nov 24, 2013


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