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"91 Explorer harmonic balancer puller - success Well. what do you know- one of the two holes was not threaded and the other was only partially threaded. I bought a metric 8x1.25 tap and reamed the holes. Removal went perfectly after that with 8x1.25x100mm bolts. I alternately tensioned the...

Now I have the M8x1.25 x 110 mm bolts. They don't thread into the balancer hub because the holes in the hub are NOT threaded. Looks like I'll have to tap them. Anyone else find this problem? Maybe unique to early '91 Explorers.

I'm in the middle of replacing my front main seal. Successfully removed the crank pulley bolt and have a puller set from my local NAPA. However the bolts with the set don't seem to match the thread size of the threaded holes in the balancer hub. I'm seen M8x1.25- 100mm on the forum. Can someone...

Just joined. This is a great forum, wish I'd known about it a few years ago.