Speedo rennovation
There's a lot of good info over on the IBMWR tech pages (Google IBMWR and look for the K-bike pages) but basically it usually boils down to removing the instrument cluster or "pod, " opening it up and carefully cleaning the contacts inside.
The three wire contacts on the upper right side (as you have the pod laying face down once opened up) seem to be the main culprits for the intermittent speedo scenario; they get corroded and don't quite make contact.
Before you go tearing your fairing apart (unfortunately necessary on faired K75s and K100s) to remove the pod I suggest you first check two other possible causes for cluster failure/intermittent operation:
1) the rear drive sensor located on top of the rear drive needs cleaning (easy to pull out, inspect and clean)
2) the connector that is midway on the bike that runs from the sensor to the speedo; once you locate it, pull it apart and clean the contacts.
I recently did all three above fixes and now my speedo is working 100% of the time. Unfortunately, I still have a condensation problem on the inside of the pod, even though I reassembled it after it being in the oven (with only the pilot flame on) overnight. High humidity, rain and moisture gets into these things somehow and messes up the connections sooner or later.
Next time I have the fairing off I'm going at it again and will try to seal the pod glass carefully as I suspect that's how moisture is getting in in the first place.
As far as tools that are useful for cleaning and lubing the contacts I recommend going to Radio Shack and getting a small, pen-like contact-cleaning tool that has many tiny fiberglass rods that retract back inside it once you're done using it. The fiberglass makes tiny scratches that remove a lot of corrosion quickly.
Another item to have on hand is a tube of Ox-Guard, available at most large hardware stores. After you clean the contacts, dab a small amount of this dielectric grease onto them with a toothpick or cotton swab; it will keep the connection from getting corroded again and promote conductivity.
Hope you don't mind my long-winded reply; I just finished my second cup of coffee here on a cold and rainy morning here... (no riding for me today )
Btw, just saw your gorgeous blue K100RS over in the K-bike photo section; congratulations on acquiring your new Beemer!
Good luck with getting it all sorted and welcome to the MOA Forums, too.
There's a lot of good info over on the IBMWR tech pages (Google IBMWR and look for the K-bike pages) but basically it usually boils down to removing the instrument cluster or "pod, " opening it up and carefully cleaning the contacts inside.
The three wire contacts on the upper right side (as you have the pod laying face down once opened up) seem to be the main culprits for the intermittent speedo scenario; they get corroded and don't quite make contact.
Before you go tearing your fairing apart (unfortunately necessary on faired K75s and K100s) to remove the pod I suggest you first check two other possible causes for cluster failure/intermittent operation:
1) the rear drive sensor located on top of the rear drive needs cleaning (easy to pull out, inspect and clean)
2) the connector that is midway on the bike that runs from the sensor to the speedo; once you locate it, pull it apart and clean the contacts.
I recently did all three above fixes and now my speedo is working 100% of the time. Unfortunately, I still have a condensation problem on the inside of the pod, even though I reassembled it after it being in the oven (with only the pilot flame on) overnight. High humidity, rain and moisture gets into these things somehow and messes up the connections sooner or later.
Next time I have the fairing off I'm going at it again and will try to seal the pod glass carefully as I suspect that's how moisture is getting in in the first place.
As far as tools that are useful for cleaning and lubing the contacts I recommend going to Radio Shack and getting a small, pen-like contact-cleaning tool that has many tiny fiberglass rods that retract back inside it once you're done using it. The fiberglass makes tiny scratches that remove a lot of corrosion quickly.
Another item to have on hand is a tube of Ox-Guard, available at most large hardware stores. After you clean the contacts, dab a small amount of this dielectric grease onto them with a toothpick or cotton swab; it will keep the connection from getting corroded again and promote conductivity.
Hope you don't mind my long-winded reply; I just finished my second cup of coffee here on a cold and rainy morning here... (no riding for me today )
Btw, just saw your gorgeous blue K100RS over in the K-bike photo section; congratulations on acquiring your new Beemer!
Good luck with getting it all sorted and welcome to the MOA Forums, too.