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1Back to top Go down   Leak from front fork K1100RS 1992 Empty Leak from front fork K1100RS 1992 Thu Apr 06, 2017 12:50 pm

Danish biker

Danish biker
Platinum member
Platinum member
My front fork is leaking from my K1100RS from 1992.

I'm thinking I'll replace what ever needs to be replaced.

Is there on this forum a guide the I would apreseate a link.

Maybe also a link to where a guy from Denmark could order the parts.



Last edited by Danish biker on Sat Apr 08, 2017 4:56 am; edited 1 time in total

    

Holister

Holister
Life time member
Life time member
If it's leaking from the top then it's probably just the fill plug in the top cap. It takes an 8mm Allen key and if it's been over tightened it's probably stripped and won't seal. You'll get a second hand one somewhere.

You'll need to drain both and refill with fresh fork oil. Double check but I'm pretty sure they take different quantities of oil.


__________________________________________________

1989 K100RT     VIN  0097367 (naked)  
1996 K1100RS   VIN  0451808
  Leak from front fork K1100RS 1992 Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

RicK G

RicK G
admin
admin
I stripped the thread on one of my forks some time ago and used a schrader valve (tyre valve) in both. I didn't put any air pressure in them but was asked on many occasions if I did.

To get to the under side you need to get the small plate out. From what I recall it comes out easily with a screwdriver in one of the holes and the spring holds it in.


__________________________________________________
"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 2004 K1200GT 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

Danish biker

Danish biker
Platinum member
Platinum member
Thanks guys but I'm totally blank and English is not my native language. I'm pretty sure the leak is because the rubber "things" that prevents leaking is worn out.

I need a guide with pictures showing what I need to take apart and how. How much oil (and which) I need to refill. Any special tools (picture or I'll be totally lost, and hopefully link to where it can be ordered).

Or someone needs to tell me "don't do this yourself"


__________________________________________________
You have enemies? Good. That means you've stood up for something, sometime in your life.
-Sir Winston Churchill
    

Laitch

Laitch
Life time member
Life time member
Don't do this yourself.


__________________________________________________
1995 K75 81,000 miles
Leak from front fork K1100RS 1992 Usa-lo10
    

Dai

Dai
Life time member
Life time member
Ignore him (sigh) Leak from front fork K1100RS 1992 44271 Either the Haynes or the Clymer manuals have instructions on changing the fork seals ("the rubber "things" that prevents leaking").


__________________________________________________
1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

RicK G

RicK G
admin
admin
If you do this yourself or pay a workshop only use genuine BMW seals.
I have also sent a message with a link to the Haynes manual.


__________________________________________________
"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 2004 K1200GT 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

8Back to top Go down   Leak from front fork K1100RS 1992 Empty Re: Leak from front fork K1100RS 1992 Sat Apr 08, 2017 12:05 am

Holister

Holister
Life time member
Life time member
The OP mentions the oil is leaking from the top of the forks. Would this be seals? If it were seals wouldn't oil be seeping from where the slider meets the stauntion?
I tend to think its simply the fill plug on top of the fork. That's what happened to my K1100. Had a tiny bit of oil seeping after a drain and refill.


__________________________________________________

1989 K100RT     VIN  0097367 (naked)  
1996 K1100RS   VIN  0451808
  Leak from front fork K1100RS 1992 Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

Danish biker

Danish biker
Platinum member
Platinum member
Rick thanks so much for the message. I'm checking it out now.

Ok gentlemen sorry I do not know all the technical terms should have used google translate how ever I'm sure any one can figure out what "the rubber things" mean. Actually funny 😂

I have no clue to what the parts are called but Holister the leak is not from the plug on top of the fork but where the inner frontleg moves up and down into the outer frontleg. Right where a fork normally would leak. On this picture you can actually see the leek on the leg that is fare away.

Leak from front fork K1100RS 1992 IMG_2952_zpsa9mpquc8

I've done repairs like this on Japanese bikes way back. I was just hoping there would have been a thread on this forum with a simple guide. You know like:

1. Take off the bottom part of the fairing (had to google that word 🤣).

2. Raise the bike with a jack (or what ever).

3. Secure the bike doesn't fall down.

3 take off front wheel.

4. Take off nut A, B and C

5. Bla, bla.

6. More bla, bla.

    

10Back to top Go down   Leak from front fork K1100RS 1992 Empty Re: Leak from front fork K1100RS 1992 Sat Apr 08, 2017 6:23 am

Holister

Holister
Life time member
Life time member
@Danish biker wrote:....
I have no clue to what the parts are called but Holister the leak is not from the plug on top of the fork but where the inner frontleg moves up and down into the outer frontleg. Right where a fork normally would leak. On this picture you can actually see the leek on the leg that is fare away.
....
Hey Danish Biker, no problem. Just follow Rick's advice. But just for the record, because you've deleted what you said above, you did say it was leaking from the top, not half way down the fork. Very Happy Cheers


__________________________________________________

1989 K100RT     VIN  0097367 (naked)  
1996 K1100RS   VIN  0451808
  Leak from front fork K1100RS 1992 Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

11Back to top Go down   Leak from front fork K1100RS 1992 Empty Re: Leak from front fork K1100RS 1992 Sat Apr 08, 2017 7:08 am

Danish biker

Danish biker
Platinum member
Platinum member
Holster I'm well aware about that fact but deleting it will help future members answering this tread (and it's still leaking from the top 😂, just not the top you thought 😎).

Any way one a side note. Since only the left front fork is leaking wouldn't it then be ok not to mess with the right leg which is ok? Both "rubber things that prevent leaking" (sorry Danish humor), was changed about 7.000 km ago. I'm not riding any races etc. just to and from work so I'm thinking why take apart something that is not leaking.


__________________________________________________
You have enemies? Good. That means you've stood up for something, sometime in your life.
-Sir Winston Churchill
    

12Back to top Go down   Leak from front fork K1100RS 1992 Empty Re: Leak from front fork K1100RS 1992 Sat Apr 08, 2017 7:19 am

Holister

Holister
Life time member
Life time member
OK... you see I'm from downunda so I can get confused occasionally about what's the top and what the bottom. Makes it very interesting sometimes when dealing with women.... Laughing


__________________________________________________

1989 K100RT     VIN  0097367 (naked)  
1996 K1100RS   VIN  0451808
  Leak from front fork K1100RS 1992 Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

13Back to top Go down   Leak from front fork K1100RS 1992 Empty Re: Leak from front fork K1100RS 1992 Sat Apr 08, 2017 12:37 pm

Danish biker

Danish biker
Platinum member
Platinum member
Amen Holister


__________________________________________________
You have enemies? Good. That means you've stood up for something, sometime in your life.
-Sir Winston Churchill
    

14Back to top Go down   Leak from front fork K1100RS 1992 Empty Re: Leak from front fork K1100RS 1992 Sun Apr 09, 2017 9:01 am

Danish biker

Danish biker
Platinum member
Platinum member
How in the name of ####&&&@@@@ 😤 do I get this off (removed the bolts but it is as welded into the fork):

Leak from front fork K1100RS 1992 IMG_2964_zpsygzj6gsb



Last edited by Danish biker on Sun Apr 09, 2017 11:29 am; edited 1 time in total

    

15Back to top Go down   Leak from front fork K1100RS 1992 Empty Re: Leak from front fork K1100RS 1992 Sun Apr 09, 2017 9:21 am

RicK G

RicK G
admin
admin
That is the ABS wheel speed sensor. Some penetrating oil (ATF mixed with acetone 50:50 and gently tap it with a hammer wooden handle going around it.


__________________________________________________
"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 2004 K1200GT 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

16Back to top Go down   Leak from front fork K1100RS 1992 Empty Re: Leak from front fork K1100RS 1992 Sun Apr 09, 2017 9:28 am

Inge K.

Inge K.
VIP
VIP
Leak from front fork K1100RS 1992 Varmlu10


........or disconnect the sensor, the connector you find under the tank (blue housing).


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

17Back to top Go down   Leak from front fork K1100RS 1992 Empty Re: Leak from front fork K1100RS 1992 Sun Apr 09, 2017 10:29 am

Danish biker

Danish biker
Platinum member
Platinum member
Inge K been waiting for you 👍

That was my idea. Probably have to find the old tread where you told be how to get the tank off. Seem to remember there was something vital about taking the pressure off the fuel system.


__________________________________________________
You have enemies? Good. That means you've stood up for something, sometime in your life.
-Sir Winston Churchill
    

18Back to top Go down   Leak from front fork K1100RS 1992 Empty Re: Leak from front fork K1100RS 1992 Sun Apr 09, 2017 11:30 am

Danish biker

Danish biker
Platinum member
Platinum member
Lady and gentlemen thanks a lot. The forks are off. I'll probably take the to the BMW shop and let them fix the leak.

Always a pleasure to visit this forum.


__________________________________________________
You have enemies? Good. That means you've stood up for something, sometime in your life.
-Sir Winston Churchill
    

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