BMW K bikes (Bricks)

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1Back to top Go down    Un-identified drain hose / tube on Wed Oct 11, 2017 10:09 am

WINGLESS

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active member
active member
Hi all,

'85 K100RS

I have just completed my first clutch spline lube successfully ( without removing exhaust system).

During initial strip down I noticed a 7mm o/d hard plastic tube going down thro' the rear of the gearbox casting into the region of the swinging arm. This was not connected to anything at the top end.
I can only guess that this has been a vent for an older style "wet" battery.
Can anyone confirm or offer an alternative suggestion.

thanks again folks

Ian

    

2Back to top Go down    Re: Un-identified drain hose / tube on Wed Oct 11, 2017 10:59 am

ERasberg

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Could it be a vent tube for the gas tank ?

    

3Back to top Go down    Re: Un-identified drain hose / tube on Wed Oct 11, 2017 11:15 am

duck

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Life time member
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Yes, if it's going through a hole in the left rear top of the transmission then it's an old obsolete battery vent/drain hose.


__________________________________________________
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
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

4Back to top Go down    Re: Un-identified drain hose / tube on Wed Oct 11, 2017 12:05 pm

Point-Seven-five

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Life time member
+1 on battery drain hose. Not necessary when using a maintenance-free AGM battery.


__________________________________________________
Present:
1994 K75RT
1994 K75S
1992 K100RS

Past:
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

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