K11 Owners Group

granth

k1100 driveshaft splines,lube or not ?

I am interested in opinions on this subject.
I have seen it stated,on another Forum, that the K1100 does not require to have its driveShaft spines re-lubed,though the assertion had no explanation for the statement.
What is the consensus on this issue ???? Confused

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1993(94 MODEL) K1100RS IN ASTRAL BLUE
2006 URAL 750CC DALESMAN SIDECAR OUTFIT,
RED AND CREAM.

Number 6 · Posted: Thu May 26, 2011 4:07 pm Post subject:

Lube regularly with molybdene bisulfur grease (black grease).
_________________
I am not a number, I am a free man.

94 K1100LT

malcolmt · Posted: Thu May 26, 2011 4:14 pm Post subject:

The concensus is the paralevers do not need the attension needed by the earlier models.

I've got an 86' K75 and it needs the drive shaft lubing every 20,000km.
This is due to the shaft "jacking" on the shaft at the rear drive.
The tranny rear drive end dosent need the lube as often as its secured by a circlip.

The jacking on a paralever drive is dramaticly reduced so lubing isnt needed anywhere as often.

I had to repair the clutch on my K11, when it was stripped the grease on the drive shaft looked like new but from the bikes history it seems it hadnt been greased for at least 50,000km.

I expect others will be around soon with similar examples
regards

Malcolm(t)
Joburg, South Africa
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A Bike on the road is worth two
in the shed
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Phil Marvin · Posted: Thu May 26, 2011 4:18 pm Post subject:

Hi, Granth,
This is my experience. I've had 2 K1100LT's, a '96 which I sold at 122k miles and a '95 which died when I hit a deer with 25k+. I had the splines (clutch and driveshaft) lubed at 32k miles on the '96. I never touched them after that and never had problems. The bike has about 150k on it now and the current owner hasn't had problems, either. I live in a hot, dry climate.

I never went into the '95 to lube splines.
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Ride Safe,
Phil Marvin in El Paso, TX
'94 K75A/3
'95 K75RTP

Flying Duck · Posted: Thu May 26, 2011 4:35 pm Post subject:

Spline wear is caused by splines rubbing against each other under load.

This occurs on the transmission input splines when you let the clutch out so those are much more prone to wear and require more attention to their lubrication.

On K75s and K100s, due to the design of the monolever rear end, the rear drive shaft splines would slide back and forth on the final drive splines as the suspension travelled up and down. If they were not kept lubricated then this would induce wear.

On a K1100, both the front splines of the drive shaft and the rear splines of the drive shaft are held in place by circlips insde the splines so there is at best a very minimal amount of sliding going on. Hence there isn't much wear that can occur.

However, there is still some slight sliding going on in the splines between the front and rear halves of the drive shaft. But those are pretty robust splines and won't wear near as much as the transmission input splines or the rear drive shaft splines of a K75 or K100.
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93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
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91 & 92 K75Ss
91 K1
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1960mog · Posted: Thu May 26, 2011 4:48 pm Post subject:

Would it hurt to lube the drive shaft splines on a K11?
(If you have the shaft out anyway)
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86 R80G/S
91 K1
93 K11LT

Number 6 · Posted: Thu May 26, 2011 4:49 pm Post subject:

granth · Posted: Thu May 26, 2011 5:01 pm Post subject:

Thanks Guys thats helpful,(particularly yours FD)
Part of the reason I am interested is that I became the owner of a low mileage (35000) '93 RS,that is running wonderfully,with no apparent backlash/transmission noises and is very smooth.
Reading all the posts on spline lubes just got me wondering..... as I do not like to dismantle parts that appear to be working well,just for a" look see".
Based on the answers here,perhaps I will leave things alone a little longer...... Very Happy

_________________
1993(94 MODEL) K1100RS IN ASTRAL BLUE
2006 URAL 750CC DALESMAN SIDECAR OUTFIT,
RED AND CREAM.

Flying Duck · Posted: Thu May 26, 2011 5:22 pm Post subject:

jr'sbmw · Big Brick Rider Joined: 04 Nov 2008 Posts: 54 Location: Fl

I have used my LT for a lot of long distance, so I want to know the condition of the splines. At 45k and now this winter at 87k, I pulled the transmission. Splines are still good. Replaced rear main seal, trans imput seal, + rear pivot bearings. I do this because of problems I've seen. A friend has a nice low mileage RS that lost the splines in the clutch hub and before that an newer R bike with a similar problem. My son had the driveshaft on his RS shell. My old K100 lost the rear splines. Inspect and lub.

drmalacarne · Posted: Sat Jun 04, 2011 7:42 pm Post subject:

I never touched in the splines of my 94 KLT.
Drake's explanations is very clear.
Thanks.
Guilherme.
_________________
1994 K1100LT SE n° 0267
1998 HD Heritage Springer 95th anniversary
Yes, a Hog and a Beemer can live together!

micky77

I am not sure if this should get molly on it or not. Can someone answer this? Confused

Inge K.

The input shaft to the gearbox should be lubed, in the area shaft and the friction disc meets.
Because the clutch friction disc have a slight axial movement when the clutch being pulled.

Use sparingly, so it dont being thrown to the clutch friction areas.

Inge K.

Flying Duck