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Mono Shock...Not on Purpose!

  • Thread starter Thread starter Newbee
  • Start date Start date
N

Newbee

Guest
I have a broken upper shock mount bolt on my 82 GS750. How do I fix it?
Is there a replacement stud/bolt available?
 
is there enough left to extract the broken bolt?
bik banduit likely has it
its odd most bolts are still available.
 
The stud is welded to the frame and is not easy to repair; requires drilling out the old stud and making a new one on a lathe. Some people cut new threads the next size smaller if it's just a matter of stripped threads. I vaguely remember other fixes but you should do a search for more information.
 
DANG the bad luck............

DANG the bad luck............

I got the stud drilled out. Now I have a nice clean hole just, a tad off center. I think I will try to get a metric bolt of correct size, have a sleeve made to make up the difference and then weld it in both front and rear,shoot on a little paint and I think I will be good?
 
Newbee said:
I got the stud drilled out. Now I have a nice clean hole just, a tad off center. I think I will try to get a metric bolt of correct size, have a sleeve made to make up the difference and then weld it in both front and rear,shoot on a little paint and I think I will be good?
Click to expand...

Why not tap the hole and screw the correct size stud into it?
 
Good Idea...

Good Idea...

I will take a look at that option...THANKS
 
Hello newbee

Ive suffered this problem a couple of times & imo just tapping a hole out & using a bolt is not good enough, the top shock mounts on these bikes are subject to a lot of pressure/ force being applied, an M10 bolt for example is unlikely to resist shearing & once you go much bigger than that you are leaving only a thin bush welded through the frame which will twist eventually :(

The proper & safe solution is to completely remove the original stud, make a new copy & weld it securely through the frame web as per stock ;) this should be done accurately but drilling it 1mm or so oversized to remove all of the original is acceptable imo :lol:
 
Last edited:
I'm going to try this....

I'm going to try this....

I have gotten the broken stud out and have a nice clean hole about 1/2" diameter. I am going to find the appropriate grade 8 bolt which in this case would be the next size up from 1/2" and tap the hole out. Then I will turn down the excess to the correct metric size so I can use the same retaining nut as the other side. Then I will weld the bolt in place on the back side. Pretty it up paint it and be done?
 
Newbee said:
I have gotten the broken stud out and have a nice clean hole about 1/2" diameter. I am going to find the appropriate grade 8 bolt which in this case would be the next size up from 1/2" and tap the hole out. Then I will turn down the excess to the correct metric size so I can use the same retaining nut as the other side. Then I will weld the bolt in place on the back side. Pretty it up paint it and be done?
Click to expand...

You have access to a lathe fella so why not do it properly :confused: makes no sense to me at all as a bit of EN24 or similar & an hours work would result in a proper safe secure job ;)
 
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