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Classic Truck Discussion Board

F250, 460 Harmonic balancer

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Posted by Slowpoke on April 11, 2007 at 01:05:25 from (

The outer ring on the harmonic balancer of my '86 F250, 460 engine has become unbonded from the rubber and has slipped about half a turn. That was suggested as a possibility in another post because the timing marks are so far off.

To know for sure, I used a modified strap wrench to turn the balancer and the pulleys and belts didn't move much. To modify the wrench I replaced the short cloth belt with a disgarded timing belt about 7 feet long when cut open. That's long enough to turn something two feet in diameter! I knew I'd find a use for the belt someday.

Well, there is no info in the manual about removing or installing the balancer. Is the bolt a right hand thread or a left hand thread and what is the torque when installing it? What are some methods use to hold the crank from turning?
Thanks for your help.

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