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Grunter Flying Brick Rider
Joined: 30 Sep 2015 Posts: 369 Location: North East England
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Posted: Sun Nov 27, 2022 5:54 am Post subject: Final drive |
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I have just finished refitting the final drive to my K1100 after replacing the input seal and it is back on the bike. One point that I don't understand is refitting the final drive strut (the part that runs from the back of the gearbox to the arm under the final drive)
The BMW workshop ROM states to put a weight of around 180lbs over the rear wheel before tightening the bolt to 42nm toque. Why is this? What purpose does it serve?
The only way I can think of doing this, is to sit on the passenger seat myself to provide the weight, but working on the bike on my own, I find it impossible to do this and apply the necessary torque at the same time. Has anyone found another way around this that doesn't require the abilities and skill of a contortionist? _________________ 1997 K1100LT
1994 R1100RS |
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Scott_Anderson Site Admin
Joined: 05 Sep 2006 Posts: 3120 Location: Central Iowa, USA
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Posted: Sun Nov 27, 2022 8:30 am Post subject: |
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I can't say as I have done that on any of my K's or my R.
I put the arm on, let the weight of the bike settle on it, and torque it.
Over 100K miles on 3 different paralever BMW's and haven't had one fail yet.
YMMV _________________ Ride safe.
1995 K1100LT 0302044
1997 R1100RT ZC62149
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.) |
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Flying Duck PsyKotic Waterfowl
Joined: 27 Jan 2005 Posts: 10088 Location: Bumf***, WA
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Posted: Sun Nov 27, 2022 11:19 am Post subject: |
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Scott_Anderson wrote: | I can't say as I have done that on any of my K's or my R.
I put the arm on, let the weight of the bike settle on it, and torque it.
Over 100K miles on 3 different paralever BMW's and haven't had one fail yet.
YMMV |
I don't even do that. I just do it with the bike still on the center stand.
If I really wanted another 180 pounds on the back then I'd just kidnap a prostitute. _________________ 93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
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Grunter Flying Brick Rider
Joined: 30 Sep 2015 Posts: 369 Location: North East England
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Posted: Sun Nov 27, 2022 1:45 pm Post subject: |
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Scott_Anderson wrote: | I can't say as I have done that on any of my K's or my R.
I put the arm on, let the weight of the bike settle on it, and torque it.
Over 100K miles on 3 different paralever BMW's and haven't had one fail yet.
YMMV |
That is pretty well what I thought. I will put it onto it's wheels prop it up against a convenient post and just torque the arm to what they suggest.
Although a larger proportion of a K-Lt's not inconsiderate bulk a good prportion will be on the rear end and not far off the figure they suggest.
Thanks for that. _________________ 1997 K1100LT
1994 R1100RS |
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Al. Flying Brick Rider
Joined: 28 Oct 2005 Posts: 383 Location: West of Ireland
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Posted: Mon Jan 09, 2023 1:53 pm Post subject: |
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I would think it's to centre the stress on the rubber bushing in the strut _________________ 1994 K1100 LTSE + Blackbird |
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Grunter Flying Brick Rider
Joined: 30 Sep 2015 Posts: 369 Location: North East England
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Posted: Mon Jan 09, 2023 7:53 pm Post subject: |
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I have done all the setting up, but have not been out on the bike since the work was done The day after I finished, snow arrived and although there was not a lot of it (about a 2 inches, the roads have remained treacherous with my car loosing the front end grip turning of at a junction. If that had happened with the LT it would have been bad!
So the bike has stayed indoors hooked up to an Optimate charger _________________ 1997 K1100LT
1994 R1100RS |
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