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Torquing rocker covers

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Old Apr 10, 2016 | 04:02 PM
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Default Torquing rocker covers

I'm sure someone has thought of this, but figured I would pass it along.

I torqued my rocker covers "by feel" when I built my 107. This afternoon I noticed a small oil leak out of the rear rocker box so I tightened it down a little more and considered buying an adapter from Motion Pro. I found that I was able to put my 3/8 torque wrench on the end of the 7/16 box wrench at a 90 degree angle and tighten every bolt with the tank still on. I was off by at least a half turn going by feel.

Hope this helps somebody.
 
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Old Apr 10, 2016 | 07:04 PM
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What wrench were you using for the initial tightening?
 
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Old Apr 10, 2016 | 07:15 PM
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Originally Posted by SavageChopper
I'm sure someone has thought of this, but figured I would pass it along.

I torqued my rocker covers "by feel" when I built my 107. This afternoon I noticed a small oil leak out of the rear rocker box so I tightened it down a little more and considered buying an adapter from Motion Pro. I found that I was able to put my 3/8 torque wrench on the end of the 7/16 box wrench at a 90 degree angle and tighten every bolt with the tank still on. I was off by at least a half turn going by feel.

Hope this helps somebody.
Would the length you are adding to the wrench not change the accuracy of the torque wrench? I would think this would add mechanical advantage... I might be way off on that, but that's how I would picture it.
 
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Old Apr 10, 2016 | 07:22 PM
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Unless the adapter or extension is perpendicular to the torque wrench you're going to be way off on your torque values IIRC.

This is a good way to over torque or snap off bolts in unfortunate places IMO.
 
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Old Apr 10, 2016 | 08:04 PM
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Originally Posted by threedeuce5
Unless the adapter or extension is perpendicular to the torque wrench you're going to be way off on your torque values IIRC.

This is a good way to over torque or snap off bolts in unfortunate places IMO.
As stated in my original post, I have the torque wrench 90 degrees to the box end wrench. When you do this, the torque value is correct.

Here are instructions to MotionPro's adapter that may clarify: http://www.motionpro.com/motorcycle/articles/view/2794/adjustable_torque_wrench_adapter__08-0380/
 

Last edited by SavageChopper; Apr 10, 2016 at 08:19 PM.
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Old Apr 10, 2016 | 08:24 PM
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You used your "adapter" correctly. That was never an issue in my mind. I am still curious as to what tool you used to get the values so far off by feel.
 
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Old Apr 10, 2016 | 08:25 PM
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Good to know. I'll have to keep that trick in mind.
 
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Old Apr 10, 2016 | 09:13 PM
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Originally Posted by qtrracer
You used your "adapter" correctly. That was never an issue in my mind. I am still curious as to what tool you used to get the values so far off by feel.
Got ya. I had originally torqued a bolt using a torque wrench then tightened it a bit more with a box end wrench to get a feel for how tight to go. I realize I should have done it correctly to begin with.
 
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