BMW K bikes (Bricks)

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1Back to top Go down   What's the problem here Empty What's the problem here on Sat Nov 21, 2020 8:33 pm

mritz

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Disclaimer: I've rode my k100 from California to Virginia then to Chicago 4 years ago.
Disassembly the bike and now Im putting back together. She has 55k miles.

Symptom: I put in 1st gear (or any other gear) and I can roll the bike with almost no resistance. Almost is she is in neutral. I don't know anything else. Bike is not running.

What could be wrong?

Thanks!

    

2Back to top Go down   What's the problem here Empty Re: What's the problem here on Sun Nov 22, 2020 1:53 am

Laitch

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Does it still have a driveshaft, spark plugs and a clutch diaphragm spring? Many people have time on their hands these days so are looking for challenges and/or income streams.


__________________________________________________
1995 K75 81,000 miles
What's the problem here Usa-lo10
    

3Back to top Go down   What's the problem here Empty Re: What's the problem here on Mon Nov 23, 2020 11:32 am

mritz

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@Laitch wrote:Does it still have a driveshaft, spark plugs and a clutch diaphragm spring? Many people have time on their hands these days so are looking for challenges and/or income streams.
Yes, she has everything. She is just trying to recover from a 4 year nap.
I've added a little oil in the 4 sparkplugs to add compression. Got better but it is far way from what it should be.

    

4Back to top Go down   What's the problem here Empty Re: What's the problem here on Mon Nov 23, 2020 11:59 am

92KK 84WW Olaf

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Check clutch operation at the pivot arm, may be seized and clutch not dropping properly.

Doers clutch lever operation feel normal?


__________________________________________________
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.
    

5Back to top Go down   What's the problem here Empty Re: What's the problem here on Mon Nov 23, 2020 12:42 pm

moriarti

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Possible sized thrust bearing???


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1984 k100 rs red/black VIN  0004449
    

6Back to top Go down   What's the problem here Empty Re: What's the problem here on Mon Nov 23, 2020 1:26 pm

92KK 84WW Olaf

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Clutch splines possibly need lube due to being siezed but check the pivot arm first.


__________________________________________________
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.
    

7Back to top Go down   What's the problem here Empty Re: What's the problem here on Mon Nov 23, 2020 1:37 pm

Laitch

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@mritz wrote:
@Laitch wrote:Does it still have a driveshaft, spark plugs and a clutch diaphragm spring? Many people have time on their hands these days so are looking for challenges and/or income streams.
Yes, she has everything. She is just trying to recover from a 4 year nap. . . . 
Wasn't it a 4-year disemboweling?  Smile What was the strategy?


__________________________________________________
1995 K75 81,000 miles
What's the problem here Usa-lo10
    

8Back to top Go down   What's the problem here Empty Re: What's the problem here on Mon Nov 23, 2020 4:33 pm

mritz

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@Laitch wrote:
@mritz wrote:
@Laitch wrote:Does it still have a driveshaft, spark plugs and a clutch diaphragm spring? Many people have time on their hands these days so are looking for challenges and/or income streams.
Yes, she has everything. She is just trying to recover from a 4 year nap. . . . 
Wasn't it a 4-year disemboweling?  Smile What was the strategy?
It was. I managed to Frankenstein her back.
My strategy was to get rid of all plastic, stripe her down to bare bones and carefully put it back together replacing everything needed.
Well my plan went south a little since I have 2 other motorcycles that was restoring (finished now).

Also, I figured the the electrical part was a little beyond my comfort zone. Now, slowly Im getting there after I don't know how many hours staring to electrical diagrams and testing everything with a multimeter.

I hope I will be able to start her tonight. It will be a big milestone to me.
Let's see if I can figure out this clutch problem. Im now replacing injection o-rings...last night was like a gasoline shower...beautiful to see...lol.

    

9Back to top Go down   What's the problem here Empty What's wrong on Mon Nov 23, 2020 5:13 pm

daveyson

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False neutral?

Say between 5th and 4th. Keep trying to change gears, requires twice as much stuffing around as you want to do.


__________________________________________________
11/1985 bmw k100rt (late model)  Vin. 0090567
    

10Back to top Go down   What's the problem here Empty Re: What's the problem here on Mon Nov 23, 2020 5:33 pm

mritz

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@daveyson wrote:False neutral?

Say between 5th and 4th. Keep trying to change gears, requires twice as much stuffing around as you want to do.
No false neutral.
Shifts fine, I can see gears in the gear indicator just fine...the problem is:
In first gear, I can turn the back wheel with my hands with a little resistance.
Not as free as in neutral but I can turn easily.
2nd, 3rd and so on...progressively easier.

You may be thinking Im super strong...Yes, I am but I think there's a problem also...

    

11Back to top Go down   What's the problem here Empty Re: What's the problem here on Mon Nov 23, 2020 6:25 pm

92KK 84WW Olaf

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Clutch sticking on the splines?


__________________________________________________
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.
    

12Back to top Go down   What's the problem here Empty Re: What's the problem here on Mon Nov 23, 2020 8:08 pm

mritz

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@92KK 84WW Olaf wrote:Clutch splines possibly need lube due to being siezed but check the pivot arm first.
How could I check pivot arm and How to lube clutch?

    

13Back to top Go down   What's the problem here Empty Re: What's the problem here on Tue Nov 24, 2020 12:35 am

Laitch

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@mritz wrote:How could I check pivot arm and How to lube clutch?
To check the clutch lever (pivot arm):
Follow the cable attached to the clutch hand lever rearward to where the cable attaches to the clutch lever then detach it from the lever and determine the clutch lever's ease of action by moving it backward and forward on its pivot. If it doesn’t move smoothly, detach it from its pivot then clean, inspect and lubricate the assembly until it moves easily.

To lube the clutch assembly at the transmission:
Consult instructions in the BMW manual onsite here, the Clymer manual, the Haynes manual, the resources you used to disassemble the moto, and/or the panoply of other instructional resources provided as text and video links in posts on the forum to remove the rear drive, the swing arm and the transmission then thoroughly clean, and inspect the transmission input shaft splines and the clutch disc hub splines. If they haven’t been eroded into sawtooth profiles and the clutch disc itself is not contaminated with oil and is within spec for thickness, lubricate the transmission input splines with a thoroughly brushed-on light coating of one of the lubricating pastes recommended here. Inspect the clutch rod boot and piston assembly. Check the condition of all other components.

Post photos of your labor as you oscillate from grief to elation.


__________________________________________________
1995 K75 81,000 miles
What's the problem here Usa-lo10
    

14Back to top Go down   What's the problem here Empty Re: What's the problem here on Tue Nov 24, 2020 2:46 am

brickrider2

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"Post photos of your labor as you oscillate from grief to elation."      lol!


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1996 K1100LT
    

15Back to top Go down   What's the problem here Empty Re: What's the problem here on Tue Nov 24, 2020 3:37 pm

tinyspuds

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Not sure how this will help, but. When I replaced my friction and spring plates I put it back together by the book, and had the same symptoms. The only thing that seemed wrong was how recessed the actuating rod was (more than I recalled from the starting position before I stripped the clutch). I assumed I’d got something wrong (maybe the spring plate gripping the rod?) stripped and rebuilt it, same problem. Without having a better idea, rebuilt it for a third time following the same procedure, the rod sat in the right place and everything worked as expected. 3k later it’s still fine and I have never worked out what happened.


__________________________________________________
1985 BMW K100RT + Hedingham HUB and LL’s. VIN 0028106. (Not blind to the irony of an April 1 production date).
1954 Royal Enfield 350 Bullet. Original.
    

16Back to top Go down   What's the problem here Empty Re: What's the problem here on Tue Nov 24, 2020 4:29 pm

chris846

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Had a similar thing to Tinyspuds, never figured it either, but the symptoms were definitely a permanently disengaged clutch. Just something going wrong on assembly I guess.


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Sometimes I'm not really Suzi Quatro.
    

17Back to top Go down   What's the problem here Empty Re: What's the problem here on Tue Nov 24, 2020 5:31 pm

tinyspuds

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Chris, have to ask. I’m a step behind you with my box of K. How the hell did you get the block from the wheel barrow to the bench? I’m failing to lift it, did you use something mech or am I just being a wimp? My block is on a creeper and its a lift too far...


__________________________________________________
1985 BMW K100RT + Hedingham HUB and LL’s. VIN 0028106. (Not blind to the irony of an April 1 production date).
1954 Royal Enfield 350 Bullet. Original.
    

18Back to top Go down   What's the problem here Empty Re: What's the problem here on Tue Nov 24, 2020 6:06 pm

92KK 84WW Olaf

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@tinyspuds wrote:Chris, have to ask. I’m a step behind you with my box of K. How the hell did you get the block from the wheel barrow to the bench? I’m failing to lift it, did you use something mech or am I just being a wimp? My block is on a creeper and its a lift too far...
Gotta eat your spuds. Golden wonders!!!


__________________________________________________
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.
    

19Back to top Go down   What's the problem here Empty Re: What's the problem here on Wed Nov 25, 2020 4:06 am

chris846

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Oh the K engines aren't that heavy really - they just look so damn heavy  Smile


__________________________________________________
Sometimes I'm not really Suzi Quatro.
    

20Back to top Go down   What's the problem here Empty Re: What's the problem here on Wed Nov 25, 2020 5:05 am

tinyspuds

tinyspuds
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OK. Photos of hernia to follow:1a:


__________________________________________________
1985 BMW K100RT + Hedingham HUB and LL’s. VIN 0028106. (Not blind to the irony of an April 1 production date).
1954 Royal Enfield 350 Bullet. Original.
    

21Back to top Go down   What's the problem here Empty Re: What's the problem here on Wed Nov 25, 2020 6:31 am

92KK 84WW Olaf

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@mritz wrote:Disclaimer: I've rode my k100 from California to Virginia then to Chicago 4 years ago.
Disassembly the bike and now Im putting back together. She has 55k miles.

Symptom: I put in 1st gear (or any other gear) and I can roll the bike with almost no resistance. Almost is she is in neutral. I don't know anything else. Bike is not running.

What could be wrong?

Thanks!
I did think of a 6 rivet output shaft as a potential failure too but mileage is only 55k and they last much longer. I till think that due to being standing its more like the clutch actuator arm needle bearings seized or the clutch splines sticking. Either of these 2 are likeley to result in massive play at the lever, I think.


__________________________________________________
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.
    

22Back to top Go down   What's the problem here Empty Re: What's the problem here on Wed Nov 25, 2020 2:55 pm

mritz

mritz
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@92KK 84WW Olaf wrote:I did think of a 6 rivet output shaft as a potential failure too but mileage is only 55k and they last much longer. I till think that due to being standing its more like the clutch actuator arm needle bearings seized or the clutch splines sticking. Either of these 2 are likeley to result in massive play at the lever, I think.

What intrigues me is the bike was running ok before.
I didn't do anything with clutch / transmission and just seating there would cause a mechanical failure like that?
Is there anything I could do to test it before engaging with a full disassembly of the back portion. (Im still recovering from the trauma of doing this)

    

23Back to top Go down   What's the problem here Empty Re: What's the problem here on Wed Nov 25, 2020 3:23 pm

tinyspuds

tinyspuds
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I would definitely suggest a visual check of the rod position at rest. Do you have a ‘before’ pic?
Is the adjusting bolt infeasibly inserted? By that I mean, normal is a few threads in (can’t be precise, maybe a quarter/third of the length). When mine wasn’t right the bolt was almost all the way in before it engaged the rod, simulating a full clutch pull.
Can’t be more helpful than that at this stage. Fingers crossed


__________________________________________________
1985 BMW K100RT + Hedingham HUB and LL’s. VIN 0028106. (Not blind to the irony of an April 1 production date).
1954 Royal Enfield 350 Bullet. Original.
    

24Back to top Go down   What's the problem here Empty Re: What's the problem here on Wed Nov 25, 2020 11:11 pm

mritz

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@tinyspuds wrote:I would definitely suggest a visual check of the rod position at rest. Do you have a ‘before’ pic?
Is the adjusting bolt infeasibly inserted? By that I mean, normal is a few threads in (can’t be precise, maybe a quarter/third of the length). When mine wasn’t right the bolt was almost all the way in before it engaged the rod, simulating a full clutch pull.
Can’t be more helpful than that at this stage. Fingers crossed
Case closed.
I feel a little embarrassed but it was just a cable adjustment.
I was so happy that I've run the bike around the block under rain seating on the chassis.

She's alive!!!

Now, let's go to the next problem...I will post soon. I suspect coolant and oil are mixing up...

    

25Back to top Go down   What's the problem here Empty Re: What's the problem here on Thu Nov 26, 2020 1:12 am

tinyspuds

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Good stuff. I must just be lucky, I’ve never made a stupid mistake. (Please don’t see any of my other posts).lol!


__________________________________________________
1985 BMW K100RT + Hedingham HUB and LL’s. VIN 0028106. (Not blind to the irony of an April 1 production date).
1954 Royal Enfield 350 Bullet. Original.
    

26Back to top Go down   What's the problem here Empty Re: What's the problem here on Thu Nov 26, 2020 7:06 am

Dai

Dai
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At least it was something easy.


__________________________________________________
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
    

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