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Clutch drag but why

 
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brianjcapper



Joined: 04 Mar 2014
Posts: 3

PostPosted: Fri Mar 07, 2014 4:02 am    Post subject: Clutch drag but why Reply with quote

I have a k1100rs with 42,000 miles. It won't go into neutral when the engine is running, so I deduce clutch drag. The clutch cable/arm/etc. is correctly adjusted, so far as I can tell. This seems a low mileage to have anything seriously wrong with the clutch, so before I pull it apart to look, does anyone know of a common cause of this problem? It's my first bmw so all experienced help appreciated!
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1994 K1100RS
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Scott_Anderson
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Joined: 05 Sep 2006
Posts: 3122
Location: Central Iowa, USA

PostPosted: Fri Mar 07, 2014 8:23 am    Post subject: Reply with quote

Do you have any trouble shifting between the gears when riding?
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1995 K1100LT 0302044
2017 FLHTK Ultra Limited
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Garmin Zumo 550
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"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold)
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brianjcapper



Joined: 04 Mar 2014
Posts: 3

PostPosted: Fri Mar 07, 2014 11:10 am    Post subject: Reply with quote

Hi, I've had some false neutrals (maybe twice) and difficulty getting into a gear (maybe only once). I don't know the k1100 (or any other bmw models) well enough to know if these were anything unusual.

I bought this off someone who was unwell, and said he was selling for health reasons. I think from what records I have it had been stood at some stage for a year, maybe even two.
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Flying Duck
PsyKotic Waterfowl


Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA

PostPosted: Fri Mar 07, 2014 12:17 pm    Post subject: Reply with quote

Are you (with the clutch pulled in) coming to a stop in a higher gear and then trying to shift to N? If so you need to tweak the clutch a little in between gears when downshifting. The transmission does not have synchromesh like a car.
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brianjcapper



Joined: 04 Mar 2014
Posts: 3

PostPosted: Fri Mar 07, 2014 12:38 pm    Post subject: Reply with quote

No, I'm working down the gears as usual but then just can't get into neutral from second, or even from first. I started riding on a Matchless 250 in the early 70's, have since then had Japanese bikes, including shaft drives (CX500, 1000GTR). So far as I can tell this 'symptom' is not described in any internet forum except perhaps in the case of a fairly high mileage k11 (75,000; worn clutch splines). The 42,000 mileage seems, from the records that came with the bike, authentic.
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Scott_Anderson
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Joined: 05 Sep 2006
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Location: Central Iowa, USA

PostPosted: Fri Mar 07, 2014 7:39 pm    Post subject: Reply with quote

It sounds to me like it's time to lube the transmission input shaft clutch splines.
Old, dried and or dirty grease will not allow the clutch friction disk to float free when you release the pressure plate and if it can't float free, it will "drag" and cause slight rotation to the transmission input shaft when you are trying to change gears.
More prevalent when down shifting, not up shifting.
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Ride safe.



1995 K1100LT 0302044
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.)
1997 R1100RT ZC62149(sold)
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Dieselyoda



Joined: 23 Feb 2014
Posts: 23
Location: Winnipeg, MB

PostPosted: Sat Mar 08, 2014 12:49 am    Post subject: Could be as simple as a cable. Reply with quote

Dry splines is likely but, before you get carried away, remove all the clutch free play from the cable and adjuster and see if it improves. If it does, bring the free play back to the clutch adjustment but not the cable yet. If still good, add the cable free play.
Be a shame to tear it apart because you have a cable that is stretching.
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Scott_Anderson
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Joined: 05 Sep 2006
Posts: 3122
Location: Central Iowa, USA

PostPosted: Sat Mar 08, 2014 11:51 am    Post subject: Re: Could be as simple as a cable. Reply with quote

Dieselyoda wrote:
Dry splines is likely but, before you get carried away, remove all the clutch free play from the cable and adjuster and see if it improves. If it does, bring the free play back to the clutch adjustment but not the cable yet. If still good, add the cable free play.
Be a shame to tear it apart because you have a cable that is stretching.


Along the line of cable stretching, check the cable at the clutch lever barrel connection and see if it is starting to break, BTDT as the strands start to break it will stretch......
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Ride safe.



1995 K1100LT 0302044
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.)
1997 R1100RT ZC62149(sold)
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sccommuter
Flying Brick Rider


Joined: 25 Oct 2011
Posts: 155
Location: Metromess, Tx

PostPosted: Sun Mar 16, 2014 11:19 am    Post subject: Reply with quote

Several years ago I experienced false neutrals and difficulty downshifting 3rd to 2nd. The bike had just a little over 30k on it with a dealer spline lube by previous owner 5k earlier. Two weeks later the splines in the clutch plate stripped and left me a foot in the N.C. mts. Replaced the plate and lubed everything with Guard Dog moly with the help of the folks on this site. No problems since. If I could ride as smoothly as it shifts now I'd be a happy man. Very Happy
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