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1Back to top Go down   Speedo blues Empty Speedo blues Wed Oct 09, 2013 3:46 pm

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Hi All,

My bike has been running well and it's been fun to ride.

I recently took a look at the digital clock and cleaned the contacts but that is not working, which I can live with. I bought a little digital clock and have velcroed it to my dash just behind the wondscreen...

But the speedo has stopped working.

Tapping it while riding is having no effect.

I have cleaned contacts in the instrument, the sensor at rear wheel, the connector between sensor and loom... I stuck a spare cluster on the bike and that showed the same symptoms. Tacho OK but speedo not. The return spring on the speedo is bringing the needle back to zero.

When I opened the cluster to look at the digital clock I may have affected something...

How should I proceed from here?

Any thoughts welcome.

Cheers,
Nelly

    

2Back to top Go down   Speedo blues Empty Re: Speedo blues Wed Oct 09, 2013 3:55 pm

walfish

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Speedo blues Uk-log10 88 K 100  0033026 
   
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3Back to top Go down   Speedo blues Empty How to fix your speedo Wed Oct 09, 2013 4:10 pm

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Thanks - I am checking the How to document in the download section. Good stuff, and thanks for the reply to my post.
Cheers!

    

4Back to top Go down   Speedo blues Empty Re: Speedo blues Wed Oct 09, 2013 6:49 pm

klamityboy

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You said that you put a spare cluster on and had the same result, tach ok but no speedo. Perhaps I misread but that would suggest that the problem lies between the rear wheel and the cluster, but not in the necessarily the cluster. I had a similar problem and it turned out to be the sensor on the rear final drive. I was advised when I had the problem to try the cheapest fix first. The cheapest fix was to replace the sensor (CDN $25). Just a thought.

Very Happy


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Klamityboy
1991 K75RT-P

Model Description: K 75RT
Market: Europe
Type: 0565
E-Code: K569
Engine: 3_ZYL - 0,70l (55kW)
Transmission: Manual
Body Color: Polizeiweiss
Production Date: 30.08.1990
    

5Back to top Go down   Speedo blues Empty Re: Speedo blues Wed Oct 09, 2013 8:08 pm

MikeP

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Before buying a replacement sensor, remove it from the Final Drive, put the bike in gear and using a thin screwdriver (or similar) see if the impulse sender has come adrift - it shouldn't move if the bike is in gear.

It's number 2 in this image:

Speedo blues B0000754


Speedo blues K75%20006-L

They can come loose and if they do no signal is sent. You may need a torch to see the square teeth down through the sensor hole.


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1992 K1
1993 K1100R (used to be an LT)
    

6Back to top Go down   Speedo blues Empty Re: Speedo blues Wed Oct 09, 2013 10:19 pm

RicK G

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Also a quick check is to remove the sensor from the drive and hols a mains powered soldering iron very close to the sensor and the magnetic field from the 50 or 60Hz of the power supply will make the needle go to 61kph (36mph) if the key is on. That is at 50Hz and 60Hz will read 20% higher.


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"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
    

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Speedo blues 2013-010



Last edited by Nelly the Faith Mechanic on Thu Oct 10, 2013 7:47 am; edited 1 time in total (Reason for editing : forgot text)

    

8Back to top Go down   Speedo blues Empty Re: Speedo blues Thu Oct 10, 2013 8:49 am

charlie99

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looking good nelly .....keep at it mate

I did a few repairs to the speedo pins in the instrument cluster ...quite a few killometers ago now ... hasn't missed a beat since *(well over 10,000 klm )


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'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%OSpeedo blues Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

9Back to top Go down   Speedo blues Empty Re: Speedo blues Thu Oct 10, 2013 6:35 pm

klamityboy

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I wish I had been a member of this forum when I had my speedo problem. As it turned out for me, the sensor wire that runs along the swingarm had come out of the clip and rubbed on the tire. I only discovered this when I removed the sensor to replace it.

The advice of Rick and Mike should be incorporated into a speedo troubleshooting document. Great stuff Very Happy Very Happy


__________________________________________________
Klamityboy
1991 K75RT-P

Model Description: K 75RT
Market: Europe
Type: 0565
E-Code: K569
Engine: 3_ZYL - 0,70l (55kW)
Transmission: Manual
Body Color: Polizeiweiss
Production Date: 30.08.1990
    

10Back to top Go down   Speedo blues Empty reporting back Sat Oct 12, 2013 3:17 pm

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Hi All,

So, I checked the impulse sender with the bike in gear and couldn't detect any movement.

I checked the wiring from the connector by the rear brake reservoir to the 24 pin connector (female) that the cluster fits onto - continuity all good.

I checked the circuits in the cluster itself and all was OK. 

I cleaned the pins after removing the speedo unit from the rest of the cluster internals.

I was hopeful...but still no speedo when I tested earlier.

I will remove again and see if I missed something or can improve the connections in the cluster.
I haven't done the soldering iron test on the sensor as I have no power at my garage which is not right by my house...

Any other thoughts anyone?
Cheers, Nelly

    

11Back to top Go down   Speedo blues Empty Re: Speedo blues Sat Oct 12, 2013 4:11 pm

Inge K.

Inge K.
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Nelly the Faith Mechanic wrote:I checked the wiring from the connector by the rear brake reservoir to the 24 pin connector (female) that the cluster fits onto - continuity all good.

Any other thoughts anyone?
Cheers, Nelly
Hmm........pin 24 is instrument illumination...........22 and 23 is the speedo sensor.

To check the sensor...set your instrument to the lowest DC reading, connect the
probes to the connector under the RHS battery cover (or pin 22 & 23) and turn the
back wheel.....watch the instrument......much easier if a analogue instrument is used.

About another known problem in the speedo circuit.....have a look here.


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

12Back to top Go down   Speedo blues Empty Speedo sensor Sat Oct 12, 2013 4:27 pm

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Great! Thanks for your advice. I'll check the sensor tomorrow...
Cheers, Nelly

    

13Back to top Go down   Speedo blues Empty Fault identified Tue Oct 15, 2013 7:01 pm

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@MikeP wrote:Before buying a replacement sensor, remove it from the Final Drive, put the bike in gear and using a thin screwdriver (or similar) see if the impulse sender has come adrift - it shouldn't move if the bike is in gear.

Hi! You were right after all. I checked the bike again today and with the engine running and in 1st gear I found that the impulse sender was slipping ie it could be kept still while the rear wheel was turning at low revs. This is the fault you predicted isn't it!
So my question is, can it be fixed? How? Have you done this yourself?

Cheers,
Nelly

    

14Back to top Go down   Speedo blues Empty Re: Speedo blues Tue Oct 15, 2013 7:26 pm

Inge K.

Inge K.
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A paralever is shown..involved parts is identical..google translate is your friend.

http://technik.flyingbrick.de/images/b/b8/62_tachoantrieb.pdf


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

15Back to top Go down   Speedo blues Empty Impulse sender fix Tue Oct 15, 2013 8:04 pm

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Hi! Thanks for this! Very useful... and luckily I speak German so alles klar!
I'll have a go at this and report back.

Nelly

    

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