BMW K bikes (Bricks)

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MikeisonTV

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Iíve got an Oil Drip from a rubber boot under my 91 k100. Anyone know what itís called and if I need to replace the boot or if it means a seal underneath it is gone too?


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Laitch

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The boot is torn, its clamp is loose or both.
From the MAX BMW parts fiche:


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1995 K75T 68,000 miles
    

MikeisonTV

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Awesome. Is there any procedural things I should know or remove and replace if torn kind of thing?


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Yep! I'm flipping through the air....that ain't good.
    

nobbylon

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Motorworks and Motobins both have these boots at £15


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R1100GS Feb 1995
K100RS July 1989
K100 Dec 1983†
R90s June 1975
R75/6 Feb 1976
F650GD May 2001
    

charlie99

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yeah be careful installing it ...its far too easy to rip the boot again whilst the clutch arm is swinging free and the pressure of the internal spring is pushing the boot outwards , if you have already tightened the boot to the gearbox

sometimes it easier to fit the gland at the clutch arm Ö.then fit the boot to the gearbox Ö.after the clutch cable has been fitted and the clutch arm movement is restricted already

hope that helps


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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
    

Dai

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As Charlie says. Access is severely restricted and you need three hands to do the job. If you can find an excuse to pull the swingarm off then that's by far the easiest way to do it. What I do is to attach the boot to the clutch arm and then attach the clutch cable to the arm. This gives you some help when trying to compress the big spring and slide the pivot back in. After that, clamping the boot to the gearbox is (relatively) easy.


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'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

88

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@Laitch wrote:The boot is torn, its clamp is loose or both.
†A third reason.... The centre seal is just worn out. I replaced the one on my k1 last week for this reason. Which bike have you? It is impossible to do a 16v without removing the exhaust as the expansion box gets in the way of dropping the actuation arm far enough.

When fitting the new boot apply grease, petroleum jelly or silicone spray to the inside edges of the new boot and attach the arm end first, when you push the arm up the big open end usually slides into position without too much hassle.


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88....May contain nuts!

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

Bike: K100LT 1988. 0172363. AKA the Bullion Brick! Mods: k1100 screen and stands.
K1: 1990. 6374189. Custom Stealth Black paint.
    

92KK 84WW Olaf

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Also, if its a 16v get new exhaust mount rubbers for it. The 16v exhaust can crack and this reduces the risk.

Chances are you will also need some nuts and studs and I never go near an exhaust on an unknown bike without having new washers studs and nuts to hand. The washers should be renewed.


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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 84,600 miles
1983 K100RS 0011175 Fricka 29,000 miles Damn K Pox
    

sidecar paul

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Sometimes the rubber boot fills with oil over time and when the clutch is operated the oil squirts out. My solo does this and I just loosen the boot, clean out the oil and it's good for another couple of years.

Paul.


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'84 K100RS (0014643) (owned since '85), 86 K100RS (0018891) with Martello sidecar (built as an outfit in '88),
'51 Vincent (since '67),'72 Montesa Cota (from new), '87 Honda RS125R NF4 (bought 2015)†
....No CARS never ever!
    

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