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Pulley melted hole in my timing cover?!

8.3K views 8 replies 6 participants last post by  Will  
#1 ·
I take off my AC belt tensioner and find out the backside of the pulley was somehow rubbing against my timing belt cover? What heck...is this common?

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#6 ·
The pulley bearing itself doesn't seem broke as fuck to me. It spins freely and without play (in-out or side to side). Just a tiny bit of bearing noise from rollers, but it's not loud. Could it have been that maybe the pulley lock bolt (the one that goes through the bearing center) been loose and allow the pulley to move backwards toward the timing belt cover? It seems to me plausible, but then I think that the long tension adjust bolt might hold the pulley away from the cover even if the pulley bolt wasn't tight.

By the way, I broke that long tensioner bolt...I need to find another bolt, my first attempt failed.
AC Pulley - Ej22e Phase 1 - Imgur

Sorry no higher quality photos, the good camera is on vacation in Florida.
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#9 ·
Let me see if I can dig up photos of when that pulley went on my wagon. It exploded, burned/tore a hole in the cover, then sent bearings all over the engine bay, the block, and the radiator haha.

It's so close to the cover that any uneven-ness such as that caused by failure, will make it rub.