BMW K bikes (Bricks)


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1Back to top Go down   New member in UK Empty New member in UK Sun Feb 23, 2020 12:11 pm

Jez80

Jez80
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Hi,

I recently-ish purchased a 1987 K75s with 65k on the clock. I took it out for a little test run and have found the speedo to not work. Searching for solutions led me here. Will make up a cable to try K diag this week hopefully. 

Everything else on the bike seems strong. Could do with some cobwebs blowing off it as I'm not sure when it was last ridden. 

So hello and look forward to sharing my brick experience

Jez

    

2Back to top Go down   New member in UK Empty Re: New member in UK Sun Feb 23, 2020 2:26 pm

Stumpy

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Welcome to the forum, first thing to check is does the odometer work. If not check the connections under the right hand panel.


__________________________________________________
BMW K100RT 0095857
    

3Back to top Go down   New member in UK Empty Re: New member in UK Sun Feb 23, 2020 2:45 pm

92KK 84WW Olaf

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Stumpy wrote:Welcome to the forum, first thing to check is does the odometer work. If not check the connections under the right hand panel.
Welcome too. You can follow the wire up from the speed sensor on the final drive, just behind the rear shock mount. You only need the side panel off to get at it. My RS did that yesterday....opened the connection and cleaned the pins did it.


__________________________________________________
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 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 48,061 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 61,190 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
    

4Back to top Go down   New member in UK Empty Re: New member in UK Sun Feb 23, 2020 4:09 pm

Jez80

Jez80
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Hi and thanks for the advice. I've had the connector apart and looks okay, are you just sanding them in situ? Will play some soothing sine waves to it this week and check the needle moves. Would just like to get an MoT on it so I can make the most of this weather lol!


__________________________________________________
1987 K75S
    

5Back to top Go down   New member in UK Empty Re: New member in UK Mon Feb 24, 2020 8:20 am

mike d

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As the MOT testers don't ride the bikes (well only to perform the brake test on the rolling road), you could put it in and see if it passes. Wink

    

6Back to top Go down   New member in UK Empty Re: New member in UK Mon Feb 24, 2020 8:29 am

92KK 84WW Olaf

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A kind of important thing to do with a new K is getting to know it intimately.

This involves taking bits off and opening and cleaning all the electrical connections and the wise even replace the fuses. On a nice day this is a real pleasure.

I would also replace the fuel hoses between the tank and injector rail, plus the radiator to expansion tank pipe, rubber vacuum pipes, vacuum caps and crankcase Z vent pipe. They are cheap and the fuel hose is 8/13mm and you get it at a Honda dealer for a fraction of the price at the BMW dealer. It doubles up as the expansion pipe too. With that done it will be pretty darn reliable then you get more confidence in troubleshooting.


__________________________________________________
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 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 48,061 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 61,190 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
    

7Back to top Go down   New member in UK Empty Re: New member in UK Mon Feb 24, 2020 2:25 pm

Arlina

Arlina
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Welcome Jez80 Smile


__________________________________________________
New member in UK Eu-log10  K1100RS/LT - R1200RT - R1100RS - Cagiva SST 350 Ala Verde - K75LT project - K75 Schurgers - K75S - K1100RS - K75RT - K75C
    

8Back to top Go down   New member in UK Empty Re: New member in UK Mon Feb 24, 2020 3:13 pm

Bonzo

Bonzo
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Greetings Jez80

First place Id check if the speedo isn't happening is undo the bolt holding the sensor at the rear wheel diff and give it a clean.

    

9Back to top Go down   New member in UK Empty Re: New member in UK Mon Feb 24, 2020 3:16 pm

duck

duck
Life time member
Life time member


__________________________________________________
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
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

10Back to top Go down   New member in UK Empty Re: New member in UK Mon Feb 24, 2020 3:25 pm

Jez80

Jez80
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Bonzo wrote:Greetings Jez80

First place Id check if the speedo isn't happening is undo the bolt holding the sensor at the rear wheel diff and give it a clean.
Hi Bonzo,

Have given this a go on Sunday along with taking the speedo apart to clean the 3 pins. Everything looks annoyingly clean. Maybe the previous owner got that far too.....I haven't don't the soldering iron trick as I only have a temp adjustable one and apparently that won't work. Maybe put the front end back together, book in the MoT and take for an extended trip to the test. 

Thanks for all the input, and useful list of hoses to change

Jez


__________________________________________________
1987 K75S
    

11Back to top Go down   New member in UK Empty Re: New member in UK Mon Feb 24, 2020 3:34 pm

duck

duck
Life time member
Life time member
If your soldering iron doesn't put off enough of a magnetic field then you can try Karamba. Look at the bottom of this page:
http://www.kbikeparts.com/classickbikes.com/ckb.tech/0.ckb.tech.files/speedocal/speedocal.htm


__________________________________________________
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
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

12Back to top Go down   New member in UK Empty Re: New member in UK Mon Feb 24, 2020 3:52 pm

92KK 84WW Olaf

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Bonzo wrote:Greetings Jez80

First place Id check if the speedo isn't happening is undo the bolt holding the sensor at the rear wheel diff and give it a clean.
Yeah roight...sound advice and true..........but sometimes you have to butcher the darn thing to get it out.......then buy a used one from Motorworks for £25 because the spare you have sitting there for such occasions doesn't actually work.....I know its £25 because I put one in my K1100 last week for that very reason.


__________________________________________________
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 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 48,061 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 61,190 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
    

13Back to top Go down   New member in UK Empty Re: New member in UK Mon Feb 24, 2020 3:59 pm

duck

duck
Life time member
Life time member
I've taken a bunch of speedo sensors out and never had to butcher one.  Put a plastic cutting edge under the back of it and rock it back and forth.


__________________________________________________
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
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

14Back to top Go down   New member in UK Empty Re: New member in UK Mon Feb 24, 2020 6:55 pm

moriarti

moriarti
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Hi Jez MOT working speedo not required daft but true so put a ticket on ASAP.


__________________________________________________
1984 k100 rs red/black VIN  0004449 Now sold to Olaf
    

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