I had the honor of spending the day under the hood of my XJ yesterday. My original intent was to replace the squawking serpentine belt, but upon further inspection, I found the harmonic balancer had begun to separate. The pulley section had moved out almost 1/4 inch from the hub toward the front of the vehicle. Yikes! I sure am thankful I found it before it launched itself into the radiator.

I guess I can't complain - it had over 238K on it...

Next project - replace the original piece of sh*t motor mounts.

my harmonic balancer on my 90 4.0 had seperated also and i am glad that i found it too. the reason i knew this was because it was hitting the pulley driven fan. those things are fairly hard to replace

My 91 Cherokee Harmonic Ballancer also separated. Aquick trip to the junk yard fixed it up with a replacement.