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1Back to top Go down   Locations of all grounds on K100rs Empty Locations of all grounds on K100rs Sun Feb 05, 2012 3:13 am

FreebasserSF

FreebasserSF
Silver member
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Lately I've suspected that one or more ground may be corroded somewhere in one of the nooks or maybe crannies of my bike. I have used deoxit as many here have recommended and cleaned as many of the obvious connections I could with steel wool, wire brushes, deoxit, files, and sandpaper. Please tell me which grounds I may have missed. I have "treated" and made sure were properly grounded all of the following ground wires: the obvious cluster of brown wires under the gas tank, the one to the engine directly from the negative battery terminal, one to a bolt behind the footpeg mounting bracket, one on the starter (or maybe it's the alternator, I can't remember). If anyone could post a complete list of all grounds that are to the frame or to some component which eventually goes to the frame that would be even better than telling me the ones I missed. Also a BMW mechanic told me via email that a bolt toward the right rear side of the frame, a bolt which holds the engine to the frame has a ground and looks like this:
Locations of all grounds on K100rs Ground10

Can anyone clarify what he's talking about? I can't seem to find a wire leading to that spot on my bike...

    

RicK G

RicK G
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I have never seen an earth wire on that bolt. There is one more I can think of and that is below and just behind the fuel rail between #3 & #4 injector, it is not very apparent and gives the fuel injection computer an extra earth. There may also be a earth wire that goes from the cluster under the tank to the right master cylinder and it is very neccessary to your well being and can prevent a throttle lock up. Other than them and what you mension I can't think of any others.
Neither the starter or alternator has earth wires you may have mistaken the 6mm black wire with a smaller one next to it on the starter which supplies power when the start button is pushed.


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

Inge K.

Inge K.
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@FreebasserSF wrote: Also a BMW mechanic told me via email that a bolt toward the right rear side of the frame, a bolt which holds the engine to the frame has a ground and looks like this:
Can anyone clarify what he's talking about? I can't seem to find a wire leading to that spot on my bike...
It`s the mounting lug itself which is the main ground connection between the engine and frame.

Inge K.

    

RicK G

RicK G
admin
admin
Ah Yes thanks Inge I hadn't thought about that earth, the other 2 points on the engine are rubber mounts on the K100 but the gear box also has good earth points.
I see your winter has not driven you crazy yet or do you spend the winter in Spain and not tell us.


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

Inge K.

Inge K.
VIP
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K Freak wrote:I see your winter has not driven you crazy yet or do you spend the winter in Spain and not tell us.
Not yet........but -8 degree celsius and snowing.......keeps you inside, throwing pieces of wood into a
big iron box.

Spain would be a great idea, my fellows at work and I have often speak about putting the factory on a
raft and pull it direction south............the stock holders doesn`t agree.

Inge K.

    

6Back to top Go down   Locations of all grounds on K100rs Empty Re: Locations of all grounds on K100rs Sun Feb 05, 2012 12:26 pm

FreebasserSF

FreebasserSF
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Aha! So the bolt should be taken out ran, over with some lube and a dye to be sure it's clean, and then re-inserted to confirm ground.

K Freak wrote:Ah Yes thanks Inge I hadn't thought about that earth, the other 2 points on the engine are rubber mounts on the K100 but the gear box also has good earth points.

What do you mean about the rubber mounts on the engine? Also where are the grounds on the gear box?

    

7Back to top Go down   Locations of all grounds on K100rs Empty Re: Locations of all grounds on K100rs Sun Feb 05, 2012 12:44 pm

Inge K.

Inge K.
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The two front mountings on the frame, is rubber mounted.
The two rear mountings (at gearbox) is direct mounted (which also give electrical connection).

Inge K.

    

Inge K.

Inge K.
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@FreebasserSF wrote:Aha! So the bolt should be taken out ran, over with some lube and a dye to be sure it's clean, and then re-inserted to confirm ground.
Watch out when you removing this bolt, as it should be a shims (if needed) between the frame mounting lug and the bellhousing.

Inge K.

    

K-BIKE

avatar
Life time member
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Great tip Inge thanks for that I am just about to treat that bolt.
Regards,
K-BIKE

    

10Back to top Go down   Locations of all grounds on K100rs Empty Re: Locations of all grounds on K100rs Sun Feb 05, 2012 3:28 pm

brickrider

brickrider
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"There may also be a earth wire that goes from the cluster under the tank
to the right master cylinder and it is very neccessary to your well
being and can prevent a throttle lock up."
Sorry, but I don't understand this. What is the right master cylinder? The front brake pump? A throttle lock up? Does this mean the throttle will not close?


__________________________________________________
Brickrider
1985 K100RS; brick red, of course!
    

11Back to top Go down   Locations of all grounds on K100rs Empty Re: Locations of all grounds on K100rs Sun Feb 05, 2012 7:22 pm

Inge K.

Inge K.
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@brickrider wrote:Sorry, but I don't understand this. What is the right master cylinder? The front brake pump? A throttle lock up? Does this mean the throttle will not close?
Yes, it`s the front brake pump...........and worst case scenario is that your throttle won`t close.
(but if the specific problem should happen, you probably just end up with a throttle that is stiff to operate).

Early in the life of the K it was some issues with front brake switches that shorted, and the only way
the current could find ground, was through the throttle cable.
So since then (05/84) the K`s got an additional ground wire on RH lever assy.

Inge K.

    

12Back to top Go down   Locations of all grounds on K100rs Empty Re: Locations of all grounds on K100rs Sun Feb 05, 2012 7:27 pm

RicK G

RicK G
admin
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@brickrider wrote:"There may also be a earth wire that goes from the cluster under the tank
to the right master cylinder and it is very neccessary to your well
being and can prevent a throttle lock up."
Sorry, but I don't understand this. What is the right master cylinder? The front brake pump? A throttle lock up? Does this mean the throttle will not close?
BMW found that under some fault conditions that the extra current was earthing via the throttle cable which was gettinh hot and melting the inner liner and binding the cable so that it didnt return properly. I was going to type right switches and changed my mind and put master cylinder (front brake) but didn't delete the right bit sorry for the confusion.


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

13Back to top Go down   Locations of all grounds on K100rs Empty Re: Locations of all grounds on K100rs Sun Feb 05, 2012 8:06 pm

brickrider

brickrider
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My K100RS is a 1985 model, so this could well be something I need to pay attention to. When I first acquired the bike I did some work on the front brakes, but I don't recall finding any earth wire on the brake master cylinder. Where would I find the connection point, if the wire is indeed there? TIA


__________________________________________________
Brickrider
1985 K100RS; brick red, of course!
    

14Back to top Go down   Locations of all grounds on K100rs Empty Re: Locations of all grounds on K100rs Sun Feb 05, 2012 8:12 pm

RicK G

RicK G
admin
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It is a black wire, not brown as are most earths, and connects to a 4mm allen head bolt to the front inner lower corner of the master cylinder assembly.


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

15Back to top Go down   Locations of all grounds on K100rs Empty Re: Locations of all grounds on K100rs Sun Feb 05, 2012 8:18 pm

Inge K.

Inge K.
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It should be mounted on all models since 05/84.

Locations of all grounds on K100rs B0000610

Inge K.

    

16Back to top Go down   Locations of all grounds on K100rs Empty Re: Locations of all grounds on K100rs Mon Feb 06, 2012 5:39 pm

caferacer62

caferacer62
Life time member
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Also on mine there is a large flat braided earth strap that connects to the lower fork clamp and goes back to the earth point on the main frame under the tank.

When i had everthing off for the headlight relay stuff, i noticed that the lug on the end of it that attached to the fork clamp had snapped off. Probably from fatigue,but definitely worth checking. I don't know if all the models have them though.


__________________________________________________
Bert 2.0

Don't give in to the Black Dog!
"A Zorst, a zorst my kingdom for a Zorst"

Locations of all grounds on K100rs 170874
    

17Back to top Go down   Locations of all grounds on K100rs Empty Re: Locations of all grounds on K100rs Wed Jan 22, 2014 2:25 pm

orforester

orforester
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Inge, you wouldn't happen to have a photo of that ground?  I have a 4/85 RS converting to RT.  Been in the shop for a couple of months, brain is not remembering where that wire goes?  Black wire with loop on end.


__________________________________________________
89 K 100 RS se
85 K 100 RT
    

18Back to top Go down   Locations of all grounds on K100rs Empty Re: Locations of all grounds on K100rs Wed Jan 22, 2014 3:46 pm

92KK 84WW Olaf

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Inge K wrote: Early in the life of the K it was some issues with front brake switches that shorted, and the only way
the current could find ground, was through the throttle cable.
So since then (05/84) the K`s got an additional ground wire on RH lever assy.


My RT is 08/84, doesn't have this, but the LT does have it........Good post.


__________________________________________________
1992 K100LT 0193214 Bertha 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 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

19Back to top Go down   Locations of all grounds on K100rs Empty Re: Locations of all grounds on K100rs Wed Jan 22, 2014 5:05 pm

rosskko

rosskko
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Unless I am wrong and this isn't part number 25, but I think it is

Locations of all grounds on K100rs Earth10


__________________________________________________
1986 K100RT VIN 0093801K100RT with summer fairing for a northern visitor

Basic/2 6308802K100CJ  05/1988

K1100RS 0194321
    

20Back to top Go down   Locations of all grounds on K100rs Empty Re: Locations of all grounds on K100rs Wed Jan 22, 2014 8:09 pm

RicK G

RicK G
admin
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Yep thats it. I have also seen them attached to the other bolt that holds the master cyl at the front


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

21Back to top Go down   Locations of all grounds on K100rs Empty Re: Locations of all grounds on K100rs Wed Jan 22, 2014 8:16 pm

Inge K.

Inge K.
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Other end to the central ground under the tank.


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

22Back to top Go down   Locations of all grounds on K100rs Empty Re: Locations of all grounds on K100rs Thu Jan 23, 2014 12:43 am

orforester

orforester
Silver member
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I did find that ground I attached it to the front mount on master cly.  That is where it is on my 89 RS.  I would think either location grounds the  throttle?  Right?


__________________________________________________
89 K 100 RS se
85 K 100 RT
    

23Back to top Go down   Locations of all grounds on K100rs Empty Re: Locations of all grounds on K100rs Thu Jan 23, 2014 2:03 am

RicK G

RicK G
admin
admin
Yep that's 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 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

24Back to top Go down   Locations of all grounds on K100rs Empty Re: Locations of all grounds on K100rs Sat Feb 01, 2014 4:41 pm

robmack

robmack
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I just checked my K1100 front brake master cylinder (20mm Brembo) and there is no apparent connection for the ground.  Is it required on the K1100 front brake master cylinder or is that ground wire ONLY required for the K100 MC?


__________________________________________________
Robert
1987 K75 @k75retro.blogspot.ca
http://k75retro.blogspot.ca/
    

25Back to top Go down   Locations of all grounds on K100rs Empty Re: Locations of all grounds on K100rs Sat Feb 01, 2014 4:49 pm

Inge K.

Inge K.
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16V's got a different kind of front brake lamp switch.


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

26Back to top Go down   Locations of all grounds on K100rs Empty Re: Locations of all grounds on K100rs Sat Feb 01, 2014 4:56 pm

robmack

robmack
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So Inge, I take it this means the ground wire is not required on the K1100 front MC. The short circuit cannot happen because of the different right-hand light switch assembly's design and therefore current will never try to find its way back along the throttle cable.


__________________________________________________
Robert
1987 K75 @k75retro.blogspot.ca
http://k75retro.blogspot.ca/
    

27Back to top Go down   Locations of all grounds on K100rs Empty Re: Locations of all grounds on K100rs Sat Feb 01, 2014 5:10 pm

Inge K.

Inge K.
VIP
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Yes, you're correct Robert....16V switches has a plastic housing...
much less posibillity to short to ground.

8V switches has partly a metal housing.


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

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