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1Back to top Go down   should I inspect clutch Empty should I inspect clutch Thu Dec 26, 2013 3:18 pm

Das Bitchz

Das Bitchz
active member
active member
Hi Folks,

I just removed my transmission from my K100RS/1, one of the fork for second gear was damaged) and many suggest that I should redo m clutch while I'm there!...I had no problems with the clutch it was tight and not slipping, therefore I have a question for the folks that had a similar experience.
Some oil was dripping from the transmission case, there is an small outlet under the transmission and it was dripping from that place. from my knowledge it was dripping transmission oil!

Anyway, needless to say that my clutch housing interior was covered with oil and this is why I'm questioning myself...if oil was dripping? was it dripping from the clutch seal?

Need some input to take a decision do I remove the clutch or not?...what would you do?

 should I inspect clutch 61740


2Back to top Go down   should I inspect clutch Empty Re: should I inspect clutch Thu Dec 26, 2013 3:41 pm


most commonly 
 oil seeps from the output shaft out of the motor  and accumulates at the bottom of the clutch housing ...and out the breather - drain hole

can happen at 2 places

1 under the retaining nut of the clutch assembly ...on the output shaft there is a seal - o ring in there ...known to break-crack  over time
2  the output shaft seal itself

but by no means the only place it can leak from

alternator output drive  as well

other wise the input shaft to the gearbox is a high likely hood of some oil leaking from there but not always
unless you have a seal issue around the front face of the gearbox housing ?  

but the high importance thing that should be done is lubricating the spline to the input of the gearbox from the actual clutch plate ....with the special molly compound stuff whilst you have it apart .

hope that helps

they are  well documented in the forum ....just use the "search " utility

cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
1987 k100rs ########   "Red"  - (red sports rs TWB style )
1989 K100rt #009637   "Black Betty"  (naked rt ala Nigel , now sporting an rs main fairing )

3Back to top Go down   should I inspect clutch Empty Re: should I inspect clutch Thu Dec 26, 2013 7:51 pm

Rick G

Rick G
Once you have gone in that far check it out. As Charlie said the O-ring and main shaft seal are the likely culprits and for the sake of $30 you really dont want to do it all again. I always renew those parts unless I know for absolute sure it has recently been replaced and there is no sign of oil.

Last edited by RicK G on Thu Dec 26, 2013 9:08 pm; edited 1 time in total (Reason for editing : Dab spuelink)

"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama

Bikes 2004 K1200GT 1999 K1100 LT.

4Back to top Go down   should I inspect clutch Empty Re: should I inspect clutch Thu Dec 26, 2013 8:23 pm


Life time member
Life time member
If you need confirmation where the oil is from, just sniff it.

1992 K1
1993 K1100R (used to be an LT)

5Back to top Go down   should I inspect clutch Empty Re: should I inspect clutch Thu Dec 26, 2013 11:31 pm


Life time member
Life time member
If it's gear oil (smells like sulfur/rotten eggs) then it's most likely leaking from the transmission input seal or the seal at the rear of the clutch pushrod. In my experience it is usually the one at the back of the pushrod.

It's a bugger to dig out and what I found works best for installing a new one is to tap it in with a socket with a similar external diameter.

I've replaced a couple of them on different Ks.  I think it's part 23211451159 - 12 in this diagram:

should I inspect clutch MicroImage.aspx?ImageFileName=dbvis4699564031689760424

If the pushrod and the shaft it travels through are wet with gear oil then that's probably the culprit..

Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT

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