BMW K bikes (Bricks)

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1Back to top Go down   Seized Clutch, help please Empty Seized Clutch, help please on Wed Apr 10, 2019 9:52 pm

chris_610

chris_610
active member
active member
Hi,

A mate has recently picked up a K100RT and has tasked me with getting it going for him.

At the moment, it doesnt quite start but has been sitting for a while, when I tried to start it yesterday, it fired a couple times but wouldn't get going, im fairly confident if I drain the old fuel out and put some new fuel in it, it should hopefully start.

If anyone has any pointers on easy fuel tank removal or how to drain the tank without removal that would be awesome!

The other major problem I can see with the bike is the clutch seems to be seized.

You cannot pull the hand clutch lever back more than approx 5mm.
I think it is seized inside the clutch housing, as when you try operate the hand lever you can see the clutch arm at the back of the gearbox trying to move but thats where it appears to be stopping.

Bike details
K100RT 
Build date 03/1987
Frame No. 0093954 K100RT
Aus. Compliance plate no. 550402

Any help or ideas would be appreciated, im hoping to get to the bike in the next few hours to have a go at trying to get it ride-able again.

Thanks again!
Chris

    

2Back to top Go down   Seized Clutch, help please Empty Re: Seized Clutch, help please on Wed Apr 10, 2019 10:00 pm

kioolt

kioolt
Silver member
Silver member
K100RT had a side stand interlock on the clutch.  If you have the bike on the side stand it will be hard to pull the lever.  Check that first.


__________________________________________________
2004 R1150RT 186,800 miles 
1991 K100LT 128,700 miles
1982 R100RT 106,900 miles
Total 422,400 BMW miles

AMA,BMWRA,BMWMOA


The cheapest thing on a BMW is the nut that connects the handlebars to the seat.
    

3Back to top Go down   Seized Clutch, help please Empty Re: Seized Clutch, help please on Wed Apr 10, 2019 10:03 pm

RicK G

RicK G
VIP
VIP
Hi Chris welKome to our Knuthaus.
The problem doesn't ring any bells as to a common problem and usually the clutch mechanism is fairly good, but and there are lots of buts.
Release the cable from the lower end, you should be able to get a lever in and under the arm to move it upward. If you get the cable off then try to move the arm and it should move freely but the roller needle bearings do sometimes seize. They have a hard life down there.
If the arm is free then remove the rubber boot and check out the throwout bearing.
Also check to make sure the adjuster bolt has not over ridden the throwout and jammed.
See the PM I have sent.


__________________________________________________
"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

4Back to top Go down   Seized Clutch, help please Empty Re: Seized Clutch, help please on Wed Apr 10, 2019 10:48 pm

MartinW

MartinW
Life time member
Life time member
+1 on what Rick said. Early in my Bricks life in an effort to stop problems I fitted a grease nipple to the clutch arm. A squirt of grease occasionally will stop the ingress of water and road crap. You also need to lube the nipples at both ends and the wear surfaces and pivot on the clutch lever. Also check that the lever is not worn and rubbing on the cable.
Regards Martin.
Seized Clutch, help please Clutch17



Last edited by MartinW on Wed Apr 10, 2019 10:50 pm; edited 1 time in total (Reason for editing : Added Photo)


__________________________________________________
K75s Hybrid
    

5Back to top Go down   Seized Clutch, help please Empty Re: Seized Clutch, help please on Thu Apr 11, 2019 12:06 am

chris_610

chris_610
active member
active member
@kioolt wrote:K100RT had a side stand interlock on the clutch.  If you have the bike on the side stand it will be hard to pull the lever.  Check that first.

Hmmm, after a little research on this particular stand/clutch device, I think I better check this one first as I didn't realise this bike had this kind of interlock device.
I'm hoping this will remedy the problem, fingers crossed!

Failing that I shall try all the other suggested remedies. 

Thank you all so much for you input, it is hugely appreciated!

Ill keep you posted on my progress

    

6Back to top Go down   Seized Clutch, help please Empty Re: Seized Clutch, help please on Thu Apr 11, 2019 12:14 am

chris_610

chris_610
active member
active member
Seized Clutch, help please 20190410
Seized Clutch, help please 20190411

The beast!

    

7Back to top Go down   Seized Clutch, help please Empty Re: Seized Clutch, help please on Thu Apr 11, 2019 3:11 am

Point-Seven-five

Point-Seven-five
Life time member
Life time member
A siphon will remove most of the fuel from the tank to facilitate removing it from the bike.


__________________________________________________
Present:
1994 K75RT
1991 K100RS
1988 K100RS SE

Past:
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

8Back to top Go down   Seized Clutch, help please Empty Re: Seized Clutch, help please on Thu Apr 11, 2019 5:38 am

92KK 84WW Olaf

92KK 84WW Olaf
Life time member
Life time member
@kioolt wrote:K100RT had a side stand interlock on the clutch.  If you have the bike on the side stand it will be hard to pull the lever.  Check that first.

I am not sure it does, over here they were definitely on K100LT [my K100LT has it] but yes possible. On centre stand with side stand retracted should clear that one.

Also very likely is seized up bearings in the pivot arm.

But...from experience when I had a similar problem when I got the K100LT....cause was fraying on the cable as the gearbox end.


__________________________________________________
1992 K100LT 0193214 Bertha Alaska Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 58,645 now 96,650 miles
1983 K100RS 0011175 Fricka 29,495 miles Damn K Pox Its a Bat outta Hell
    

9Back to top Go down   Seized Clutch, help please Empty Re: Seized Clutch, help please on Thu Apr 11, 2019 7:58 am

duck

duck
Life time member
Life time member
@kioolt wrote:K100RT had a side stand interlock on the clutch.  If you have the bike on the side stand it will be hard to pull the lever.  Check that first.
It's not an interlock.  It's a side stand retractor.  When you pull in the clutch it retracts the side stand so that you don't inadvertently ride off with the side stand down which can be troublesome on left hand turns. You are correct in that it doesn't let you pull in the clutch when the bike is leaning on the side stand.


__________________________________________________
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
http://www.ClassicKBikes.com
    

10Back to top Go down   Seized Clutch, help please Empty Re: Seized Clutch, help please on Thu Apr 11, 2019 8:06 am

92KK 84WW Olaf

92KK 84WW Olaf
Life time member
Life time member
@duck wrote:
@kioolt wrote:K100RT had a side stand interlock on the clutch.  If you have the bike on the side stand it will be hard to pull the lever.  Check that first.
It's not an interlock.  It's a side stand retractor.  When you pull in the clutch it retracts the side stand so that you don't inadvertently ride off with the side stand down which can be troublesome on left hand turns.

Chris this is a mechanical thing and its on my K100LT. If side stand is down with bike weight on it you will not get clutch action and will behave exactly as you describe.

I did keep that lubed up on the K100LT and worked brilliantly but its very prone to corrosion related seizing in our climate.


__________________________________________________
1992 K100LT 0193214 Bertha Alaska Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 58,645 now 96,650 miles
1983 K100RS 0011175 Fricka 29,495 miles Damn K Pox Its a Bat outta Hell
    

11Back to top Go down   Seized Clutch, help please Empty Re: Seized Clutch, help please on Thu Apr 11, 2019 4:52 pm

MartinW

MartinW
Life time member
Life time member
Some Brickers have experienced broken cables or pulled off cable nipples caused by pulling in the clutch with the side stand down. The two times I have loaned out my cable to mates was for this reason. Both bikes were K75s's.
Regards Martin.


__________________________________________________
K75s Hybrid
    

12Back to top Go down   Seized Clutch, help please Empty Re: Seized Clutch, help please on Thu Apr 11, 2019 9:37 pm

chris_610

chris_610
active member
active member
Ok so im at the bike now and it was just the side stand down preventing the clutch handle from being functional.
Once i kicked the stand up the clutch operates fine.

Thank you for all the suggestions Smile

Next to see if I can get it running!

    

13Back to top Go down   Seized Clutch, help please Empty Re: Seized Clutch, help please on Thu Apr 11, 2019 11:53 pm

RicK G

RicK G
VIP
VIP
If only all fixes were that easy.


__________________________________________________
"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

14Back to top Go down   Seized Clutch, help please Empty Re: Seized Clutch, help please on Fri Apr 12, 2019 6:36 am

charlie99

charlie99
VIP
VIP
+1

good to hear chris ///good luck with the start process

believe me ....don't even attempt it till your sure the battery is at a good charge ,,,  if in doubt put it on a tender - charger at least overnight

the starter relay can weld if you have a low charge , additionally  the good voltage of a recently charged battery helps electronics work its best

good luck !


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%OSeized Clutch, help please Au-log10

"redframe" rs "bitsa"  with many contributions from the k100 community ,,with many thanks
    

15Back to top Go down   Seized Clutch, help please Empty Re: Seized Clutch, help please on Fri Apr 12, 2019 10:43 am

chris_610

chris_610
active member
active member
After draining the tank, putting some fresh fuel in and a new battery, the old bike started after not too much dramas.
My mate was pretty happy with the success, I was pretty happy with the minimal stuff arounds........... If only they were all like that! Very Happy

Thanks again everyone for the much appreciated input and advice, I would probably still be scratching my head over that clutch lever and side stand if it wasn't for the help.

Happy motorcycling  cheers cheers cheers

    

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