BMW K bikes (Bricks)

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

Das Bitchz

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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?

    

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

charlie99

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most commonly
oil seeps from the output shaft ...so 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 nutof 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 fromthere 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


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

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

RicK G

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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)


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If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

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

MikeP

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


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1992 K1
1993 K1100R (used to be an LT)
    

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

duck

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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 part23211451159 - 12 in this diagram:



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


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Current stable:
86 Custom K100 (K75C fairing, K75 Belly pan, Ceramic chromed engine covers, 32/10 final drive)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
93 K1100RS
94 K1100RS
93 K1100LT
91 K1
93 K75S
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