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Offline FatWilbur

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Stripped Engine Bolt - Help
« on: March 28, 2019, 12:27:04 AM »
 :148:  :157:  :157:

Oh my, I screwed up... I stripped an engine bolt.   I received my T-Rex sliders, torx socket set, hex socket set, and torque wrenches.  I thought I could do this job.  :157:  Note, I have never used a torque wrench.  I read instructions and set torque at 56 NM as referenced in this thread - https://www.s1000r.co.uk/index.php/topic,2150.0.html.  I had to use an extension bar because the head of the torque wrench was in the way... no idea if this contributed to my issue but I don't think I stay exactly perpendicular or at least it felt that way.  Anyways, I did not hear a click and stripped the hex head of the bolt.  I made it worse when I tried to undo it.
Any ideas how I can get the bolt removed?  I imagine I would have to cut off my new ( :232:) T-Rex slider and then use some tool to grab the bolt and twist it out.


Offline SimonUK

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Offline FatWilbur

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Re: Stripped Engine Bolt - Help
« Reply #2 on: March 28, 2019, 02:28:06 AM »
Ah... so there is hope  :169: thank you! 

Online DRoss

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Re: Stripped Engine Bolt - Help
« Reply #3 on: March 28, 2019, 02:49:38 AM »
My solution to this problem was to wait till I totaled the bike and replace the whole thing. The 2 broken vertebrae in my back may suggest this is not the ideal way to handle this though.  :087:

Offline FatWilbur

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Re: Stripped Engine Bolt - Help
« Reply #4 on: March 28, 2019, 03:01:31 AM »
Sorry to hear about your misfortune.  Your solution did make me laugh  :745:

Offline FatWilbur

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Re: Stripped Engine Bolt - Help
« Reply #5 on: March 28, 2019, 09:38:02 PM »
The bolt is out.  :002: I took it to a mechanic and he chiseled into the head of the bolt and slider bracket and was able to get it out.  T-Rex sending a replacement bracket and bolt for another try.   :112:

Offline podders

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Re: Stripped Engine Bolt - Help
« Reply #6 on: April 03, 2019, 10:37:44 PM »
This issue is much more common than you may think.

Sometimes when one bolt is taken out, the engine can drop in the chassis ever so slightly and unless your really cautious, you may not notice the slider bolt start to cross thread ...you can help assist the process by using a jack to ever so slightly take the weight of the engine..make sure its all lined up before attempting to install.


Offline FatWilbur

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Re: Stripped Engine Bolt - Help
« Reply #7 on: April 03, 2019, 10:41:59 PM »
Thanks for the tip  :028: podders

Offline SimonUK

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Re: Stripped Engine Bolt - Help
« Reply #8 on: April 04, 2019, 12:34:59 AM »
@podders, this is a good point. I will add though that some of these after market bolts are on the rather soft side!!

Offline beech

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Re: Stripped Engine Bolt - Help
« Reply #9 on: April 04, 2019, 02:43:20 AM »
Simon I think you are closer to the truth. Cheap bolt. One needs to use crisp Hex (allen) drivers too. The OP mentioned alighment problems with his wrenching. The shallow and questionable engagement of an Allen driver requires special attention. 56Nm to that bolt, wow. Looks like a 6mm hole, don't think it is a good plan with an allen hex. The point about alignment is well taken but the torque level in any case cross threaded or not would be the same.
There is a fastener in the top of K bike fork ball joints, requires over 90 Nm and is 7 mm. If you go all the way some of them strip. Just too close to the edge. You need to have a feel when danger is lurking.
One way to approach that stripped fastener would be to start out with a Torx driver that you can tap in. It goes down hill from there. Violence increases. Lucky there was a bracket underneath to take the damage.
« Last Edit: April 04, 2019, 02:44:37 AM by beech »

 


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