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We usually always get away with say a 2x4 across one half of the pulley sheave and a pretty good blow with a sledge. The farther off axis the better but you have to use your brain don't go and nail the outer edge of the pulley bare with a sledge as your bound to crack it. The off axis hit makes the wedges want to separate.
 

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Always reuse them.....unless you beat them up with that pipe! Really they're not consumable. Up here 590's were eating the bushings and into the pulley's with those 3 index pins yearly. Must have pulled all the variable speeds on both twice for sure and one 3 times. Finally went to over sized pins and bushings. It would be a non issue if they used a tighter clearance bronze bushing instead of those weak ass plastic ones in the sheaves.
 

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It would be a non issue if they used a tighter clearance bronze bushing instead of those weak ass plastic ones in the sheaves.
At the summer clinic it was finally explained why the plastic bushings.
Ever since that brace bar has been used the plastic bushing were added to absorb the shock loads that became higher with the brace.
Something like that.
 
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