BMW K bikes (Bricks)

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1Back to top Go down   Slight oil seep Empty Slight oil seep on Tue Oct 23, 2012 4:59 am

DeRodster

DeRodster
Life time member
Life time member
Hello ,
I noticed after long ride on Sat last there was a slight oil seep on the right side along the engine /gearbox
seam. Is it something to worry about ?

Rod


__________________________________________________
1992 K1100LT 6455194
1943 BSA WM20
1979 Yamaha DT-175
1974 Triumph 3TA / 5TA
1974 Honda 100
1969 Honda 50
    

2Back to top Go down   Slight oil seep Empty Re: Slight oil seep on Tue Oct 23, 2012 6:18 am

92KK 84WW Olaf

92KK 84WW Olaf
Life time member
Life time member
I could be wrong but suspect a seal or gasket requiring splitting engine and gearbox, except as far as I know clutch is in between...., but check first in case its coming from somewhere else.

Can you put up photo? IngeK and CrazyFrog are really great with advice here.

92KK


__________________________________________________
1992 K100LT 0193214 Bertha Alaska Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 103,800 miles
1983 K100RS 0011171 Fricka 606 29,495 miles Damn K Pox Its a Bat outta Hell Now 36,188  miles
    

3Back to top Go down   Slight oil seep Empty Re: Slight oil seep on Tue Oct 23, 2012 6:38 am

88

88
Life time member
Life time member
Can you identify if it's coming from the inside out?

There is a little breather hole at the bottom of the bellhousing which will let out leaking oil from the case. There are two seals in the bellhousing. The engine outputshaft seal and the gearbox input shaft seal. The engine seal, if blown could contaminate the clutch. The geabox seal can too but it's less likely to happen as quickly.

Clean off the area under the bell housing so that you can identify fresh leaks and observe for a couple of days. Burnt oil is coming from the engine side and Gear oil from the box side (The gear oil has a sweet smell and should be clearer).

A pic might help.

88KE


__________________________________________________
Slight oil seep Ir-log11 88....May contain nuts!Slight oil seep Ir-log11

"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.
    

4Back to top Go down   Slight oil seep Empty Re: Slight oil seep on Tue Oct 23, 2012 6:49 am

RicK G

RicK G
VIP
VIP
There are several places that leak oil round there. The rear engine main shaft seal which will leak engine oil and the O ring in the centre of the clutch carrier which also is engine oil or the front seal of the gearbox which of course will leak gearbox oil. Smell the oil and then take the bung from the filler on the gearbox and smell it that way if the smell is the same its gearbox and if not its engine.
Either way the gearbox needs to be removed and the seal replaced along with the O ring. Regardless of weather its the rear main seal or O ring replace both as if one leaks the other will do so very soon if not as soon as you start riding again.
The cost of doing the job yourself is probably only $50 - $100 but add 6 hours labour if you get a workshop to do it
Take advantage of the need to disassemble and do a spline lube at the same time.


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

5Back to top Go down   Slight oil seep Empty Re: Slight oil seep on Tue Oct 23, 2012 5:13 pm

DeRodster

DeRodster
Life time member
Life time member
Great and interesting replies as usual, I will have a peruse of the workshop manual to identify exactly what I'm looking at and hopefully will get a pic tomorrow during daylight, and maybe it wont be as awkward /time consuming a repair as doing the crankshaft seal on my Defender ;-)

Something for the long winter nights possibly...

Rod


__________________________________________________
1992 K1100LT 6455194
1943 BSA WM20
1979 Yamaha DT-175
1974 Triumph 3TA / 5TA
1974 Honda 100
1969 Honda 50
    

6Back to top Go down   Slight oil seep Empty Re: Slight oil seep on Tue Oct 23, 2012 5:48 pm

88

88
Life time member
Life time member
@DeRodster wrote:Great and interesting replies as usual, I will have a peruse of the workshop manual to identify exactly what I'm looking at and hopefully will get a pic tomorrow during daylight, and maybe it wont be as awkward /time consuming a repair as doing the crankshaft seal on my Defender ;-)

Something for the long winter nights possibly...

Rod

You'll be in good company Rod. My gearbox input seal has been leaking since early summer. It's a tiny amount about half a teaspoon under the bike when I park it up warm after riding. I'll be stripping the back end of mine and doing the seals and clutch spline lube but can't get to it for a few weeks due to work commitments.
88


__________________________________________________
Slight oil seep Ir-log11 88....May contain nuts!Slight oil seep Ir-log11

"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.
    

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