Wed, 02/04/2009 - 01:39
Offline
One of those two studs (BMW p/n 11 11 0 001 177) rising out of the gear case to hold the front engine cover to place broke and now this case is held to place with only one. It is quiet difficult to extract the piece that is stuck inside the aluminum case and probably it will require a front engine removal to do the job :cry: .
The original one is an M6 thread on one side and M8 on the other according to Huggett's site. I will probably face difficulties while extract the piece that is inside the Alu and I will have to machine a new stud with over size. Is it OK to ride the bike a few weeks in this situation (with only one stud), until I will do the job?
- 167 reads
Wed, 02/04/2009 - 08:30
#2
Offline
Broke a bolt…
... My first thought would be to get the appropriate size e-z-out extractor and use that to get a bite on the broken stud. A small hole has to be drilled down the center of the stud...
I wonder if the drill can get into the stud with the engine still in the bike.
Wed, 02/04/2009 - 08:46
#3
Offline
Broke a bolt…
I wonder if the drill can get into the stud with the engine still in the bike.
I don't know enough about the specifics in this situation, but maybe with a long enough shank on the bit... If that didn't work, then getting the timing gear cover off would hopefully expose more of the shaft of the stud for gripping. Try the easy stuff first...
Kurt in S.A.
Wed, 02/04/2009 - 10:46
#4
Offline
Broke a bolt…
Thanks for your support, guys. The rest of the stud is too deep inside the aluminum case, so welding is no option. In order to make a precise drilling inside this stud, there's no other way then taking off this timing gear case. I will then machine 2 new stainless studs, oversize maybe, and will also replace the other one that is still the old one. The question is if I will cause some more damage riding with only one stud holding the cover.
Wed, 02/04/2009 - 10:58
#5
Offline
Broke a bolt…
Michael -
I meant to offer something on riding with only one attached. I don't think it would necessarily cause a problem but it will be awkwardly attached and additional stress will be placed on the other bolt and/or the engine cover. If there was a way of providing some support - duct tape? just kidding - so that the remaining bolt wasn't hurt too bad, I ride it.
Kurt in S.A.
Michael -
I take it none of the original stud sticks out past the case, preventing you from getting a pair of vise grips on it. Sometimes people will weld an extension onto the exposed part of the broken bolt to be able to remove it. I'm wondering if the threads in the engine case are locktited in place by the factory.
My first thought would be to get the appropriate size e-z-out extractor and use that to get a bite on the broken stud. A small hole has to be drilled down the center of the stud. The extractor has reverse threads to try and turn the broken stud. If the stud is locktited, then heat applied at the appropriate spot to the case would be needed to help release the sealant.
Kurt in S.A.
Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2