What would cause this?

[Brian in Wheeling]

Pictured is the back half of a two-piece pulls I removed from an engine that had been running and not leaking out the front crank seal. What would cause the severe wear on essentially only one-half of the unit? Bent crank end? I wonder what the timing gear would look like? Any ideas?

[Brian in Wheeling]

more pics

[BILL WILLIAMSON]

"Maybe" it was NOT engaged in the crank gear key & was sitting CROOKEDY?
Bill W.

[Big hammer]

Maybe engine mains off center? Maybe the is not square? It looks like new compared to mine that I replace, the ears on mine where broken!

[SeaSlugs]

Yea could be any number of things, check to make sure your crank isnt a hair bent by checking run out but could be incorrectly made part from the get go. Ive heard some of those older 2 piece designs were iffy at best.

Could be worn out front main I suppose too but you would think you would have heard that.

[d.j. moordigian]

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Originally Posted by Brian in Wheeling

Pictured is the back half of a two-piece pulls I removed from an engine that had been running and not leaking out the front crank seal. What would cause the severe wear on essentially only one-half of the unit? Bent crank end? I wonder what the timing gear would look like? Any ideas?

Quick way to find out,...use an expandable mandrel between centers in a
lathe and check the run out of the OD. Clean it first to get an accurate reading.
You need to do this with a dial indicator..

[tinkirk]

looks like it might have been loose

[2manycars]

Post #6 has the answer, and if the outside diameter is not aligned with the inside diameter, true it up on the lathe.