Author Topic: K1100 final drive bolt frozen  (Read 5032 times)

Offline boutsy

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K1100 final drive bolt frozen
« on: August 21, 2016, 12:37:14 AM »
Hi guys, a bit of a noob with BMWs and learning as I go with a k1100 project, so apologies in advance for vagueness. At a point of removing the inner stud on direct drive housing, but it's mega frozen. I've tried some heat and an impact driver but just will not budge. I'm not sure how evasive to get, any suggestions would be appreciated.

Thanks in advance....


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Offline Laitch

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Re: K1100 final drive bolt frozen
« Reply #1 on: August 21, 2016, 02:21:15 AM »
. . . vagueness.
Welcome, boutsy. This section really should be for introductions. You know—height, weight, location, number of failed relationships, whether you like puppies or kitties. Mechanical problems should go in the Workshop where everybody can have a collective laugh at them.

In the age of Tapatalk, jpegs and screen shots, vagueness is unnecessary. To which of the parts in the attached diagram are you referring—12, the pivot pin maybe? If none of those, go to the parts fiche at MAX BMW, find your model, find the diagram, take a photo, post it here and identify by number. I don't see final drive in your photo but I should be asleep now anyway—maybe I am and all this is just the result of too many french fried potatoes.

Removing seized parts takes patience. Applying heat with a heat gun, hair dryer or powerful exhalation with a mouthful of Carolina Reapers, followed by penetrant and a tapping of the part with a hammer then returning after a nap to wrench it will often work. Sometimes it takes several tries and several naps. Other times—after the nap—applying freeze spray to the stubborn part then wrenching it will do the trick. I've seen patience using this process with a properly fitting socket or hex key and a breaker bar or long-handled ratchet work where using an impact wrench has failed while also ruining the fastener. Success may be elusive but at least you'll be rested during the struggle.

How about posting a photo of your bike in the Klassic K-bike section and putting your bike's model and year in your profile so it will show up in every post you make here from now until the end of the world?

You're welcome.
  • Along the Ridley in Vermont.
  • 1995 K75 102,000 miles

Offline rbm

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Re: K1100 final drive bolt frozen
« Reply #2 on: August 21, 2016, 08:44:29 AM »
That pivot pin in the photo is secured with Red Loctite and heavy torque meaning you'll need lots of heat and leverage to move it.  Use a good heat gun to break the grip of the Loctite and a long breaker bar to apply judicious leverage at the same time.
  • Regards, Robert
Toronto, Ontario

1987 K75 - Build Blog @http://k75retro.blogspot.ca/

Offline The Mighty Gryphon

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Re: K1100 final drive bolt frozen
« Reply #3 on: August 21, 2016, 10:32:19 AM »
Rob is correct about the red Loctite.  A couple seconds of torch on the screw will release the grip.

When you reassemble, use medium grip blue Loctite.
  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
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Offline bikesnbones

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Re: K1100 final drive bolt frozen
« Reply #4 on: August 22, 2016, 02:56:18 PM »
Watch this from 2:45

  • Peterborough UK

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