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Old 09-14-2020, 03:03 AM   #29
Mart
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Join Date: May 2010
Location: Solihull, England.
Posts: 8,732
Default Re: Crank pulley bolt...Lost again!!

Here's an idea. As you have bolts nearby, why not make a plate with a hex hole in the middle that drops over the bolt head and then has the other bolts going through it to lock it in place? Or some other sort of tab washer type device, or even some locking wire attached to an adjacent bolt.
That said, a good bolt, a decent washer (turned up in a lathe as a custom job) and a spring washer ought to be all that is required.
Just thinking out loud.

Mart.
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