Threaded part of the upper shock mount sheared off


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brad.bernard
Posts: 3
Joined: Fri Jan 14, 2011 6:17 pm
Location: Christchurch, Canterbury, New Zealand
Motorcycle: 1200 apencade

Threaded part of the upper shock mount sheared off

Postby brad.bernard » Sun Mar 18, 2012 2:45 am



Good Day gents and ladies
After finaly getting off my butt this weekend I decided to strip off all the shiny bits and buff them up a touch. When I removed the left hand top shock bolt, the bolt sheared off. I supect that it was already cracked because it really didn't take much, honest. After all the swearing and throwing of tools and stopped I tried to figure how to fix this little ooops. This mount is welded to the frame (sorry should of mentioned at the start 1200 aspy) after thinking about them all, trying to drill out the old mount and having a new bolt on one made up. Trying to weld the boken piece back on etc etc. I had a thought, how about just a u-bolt to hold it all together?? The mount for the shock is still there and more than strong enough to hold up the only thing that could happen is the shock slipping off sideways, hence the ubolt.

Any thoughts or am I just trying to take to too easy way out??
Thanks in advance for any advice.



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D2D
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Location: Winchester, NH
Motorcycle: 1976 GL1000 (sold)
1977 GL1000 (sold)
1978 GL1000
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Re: Threaded part of the upper shock mount sheared off

Postby D2D » Sun Mar 18, 2012 8:02 am

Grab your high speed drill, a good sharp drill bit that is smaller than the size of the sheared off bolt. Take a good sharp punch and make an indent in the center of the sheared off bolt that is still inside the mount. Now you need to drill a straight hole in the sheared off portion. To do this use a small piece of tubing,( I use BIC ink pen bodies cut down to about 1-2" long ) to help when drilling to keep the drill bit straight. Once you have your hole drilled in the old bolt at least half way, use the proper sized easy-out to remove the remains of the bolt.

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virgilmobile
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Re: Threaded part of the upper shock mount sheared off

Postby virgilmobile » Sun Mar 18, 2012 10:27 am

I think terminology has us confused.
The shock is held in place by a nut and washer.Welded to the frame is a threaded stud.It sheared off at the collar.
If I'm correct and nothing else is secured by the nut,you could drill out the center.thread it and use a bolt to hold the shock in place.

brad.bernard
Posts: 3
Joined: Fri Jan 14, 2011 6:17 pm
Location: Christchurch, Canterbury, New Zealand
Motorcycle: 1200 apencade

Re: Threaded part of the upper shock mount sheared off

Postby brad.bernard » Sun Mar 18, 2012 11:50 pm

Virgil,
You got it pretty spot on. My mounting brackets for the top box and crash bars also mount at this point. But all things considered I think your way would be the best fix. Now only to drill the hole straight, don't suppose you'll be in New Zealand anytime soon?? Thanks for the advice guys.

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virgilmobile
Posts: 7650
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Threaded part of the upper shock mount sheared off

Postby virgilmobile » Mon Mar 19, 2012 8:03 am

I'd be happy to stop by.You cover the transport cost of my bike? :D
While I wait,if possible use a fine thread and at least a grade 8 bolt.If careful,you can drill most of the way through the mounting stud and about 60% it's diameter.Don't get wild and go all the way through the frame :o

brad.bernard
Posts: 3
Joined: Fri Jan 14, 2011 6:17 pm
Location: Christchurch, Canterbury, New Zealand
Motorcycle: 1200 apencade

Re: Threaded part of the upper shock mount sheared off

Postby brad.bernard » Mon Mar 26, 2012 3:56 am

All done now, used a 7 mm 1 " pitch, even got the hole reasonably straight. Still got some polishing to do before I pack her away for winter.
Thanks for the advise.




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