Electric PTO torque


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Old 04-25-17, 04:01 PM
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Electric PTO torque

I believe there are several here who are actually "in the business", so just wondering if and how you properly torque something like an electric PTO onto a small engine crankshaft. This weekend the drive belt on a neighbor's Cub Cadet broke, so I was of course invited to help. The PTO had to come off, so rat-a-tat-a-tat-a-tat-a-tat-a-tat-a-tat-a-tat-a-tat-a-tat-a-tat took care of that, got the remnants of the old belt unwrapped from the transmission pulley, flopped the new one in place, and put the PTO back on. Held the PTO up where it belonged, ran the bolt as snug as I could by hand, gave it a rat-a-tat-tat to snug it, and called it good. Now this has always sufficed for me, haven't had anything come apart, so not second guessing it, but obviously nothing to ensure that the the crank doesn't turn, so just wondering if there is a better way to approach this.
 
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Old 04-25-17, 04:55 PM
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just wondering if there is a better way to approach this.
Maybe it's me but I'm not exactly sure what your are asking?
 
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Old 04-25-17, 06:14 PM
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That's pretty much the way I do it too.
 
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Old 04-26-17, 02:11 AM
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That is also the way I do it.
 
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Old 04-26-17, 05:26 AM
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.
 
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Old 04-26-17, 05:44 AM
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Thank you. One of those things that I never would have given a second thought, except that, as I said, it was a neighbor's, and he was actually trying to help and learn something, so he asked, and that got me wondering if there might be a more "technically correct" method.
 
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Old 04-26-17, 11:17 AM
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There is a torque spec, I think around 300 lb/in. However you would need a way to hold the the crank from spinning, which there are methods to do, but I never had one come back on me just hitting it good with the impact.
 
 

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