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B&S 311707-0132-e1 Rocker Cover

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countrygirl
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2018/04/03 16:07:41 (permalink)
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B&S 311707-0132-e1 Rocker Cover

This motor is on a Craftsman 917.270671 Riding Mower. It is my learning project! I found a blown head gasket and replaced it. Thanks to you, I have a service manual and was able to find the proper torque sequence. After assembling everything, I had a gap where my new gasket was. Took it apart, again, only to find out, my torque wrench was totally off! Needs to be recalibrated! Back to assembly. 
I went to take the Rocker Cover off, and 3 out of 4 bolts just snapped in half! Any ideas why?? My cover seems soft, but the torque specs are 60 lb. in. Obviously need new bolts, cover and gasket... but WHY??? WHAT DID I DO??? And... yes.. 1/2 the bolts are still inside! Going back... A friend, who thinks he knows all but has set me back a few times... told me to make sure I used the blue loctite.  Could that have done it? I tried to upload pictures but was unable to. Thanks for your help!
UGHHH!!

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    AVB
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    Re: B&S 311707-0132-e1 Rocker Cover 2018/04/03 19:37:23 (permalink)
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    I have never needed to use the blue Loctite on these bolts and it could be very the reason these bolt snapped off. Now the  fun part start don't use any of the bolt extractors to removed these as if the bolts galled in place the extractor will only snap off. You will to step drill remaining bolt out and retap to a new size. Of course this will mean you will to enlarge the rocker cover holes as well. This provide that you are successful during the drill out; otherwise, it is a new head time. 
     
    I just broke a tap on a retap of a head and there is nothing to remove the tap that works so I am installing a reclaimed head from an engine that throw a rod.
     
    On a side note I recently purchase new Loctite and it is more aggressive about setting up fast so working time is a lot less than in the past.
    countrygirl
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    Re: B&S 311707-0132-e1 Rocker Cover 2018/04/03 21:23:56 (permalink)
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    Great! Just what I needed! Now that I know what needs to be done, I shall not attempt it myself. Have a few friends that work at a Harley shop. Pretty sure they can do this. My late husband was a Harley mechanic as well. Thanks again for your help.
    countrygirl
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    Re: B&S 311707-0132-e1 Rocker Cover 2018/04/13 16:08:07 (permalink)
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    A quick update.. took the head to a machine shop. $40, 3 heli-coils.. DONE!
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