Well I finally got a few pics of the rr hub coupler I had to replace last week.
Wow is all I can say about its demise. I was totally surprised by its damage, but it was almost completly hidden when it was mounted on the wheel.
 It is such a tight fit,  the edges on the splines, that weren't gone hid the middle, grab area of the shafts connection to the hub.
My suggestion to all, if you have a rainy day, or your changing a rear tire, take the time to un-clip the set ring, pull your hub coupler and check it out. It's one of the easiest things to miss as far as a wear item on our beloved Connies.
Everyone be safe out there.
Greg

I tried to pull mine apart the last time I had the opportunity. It would not budge after I removed the retainer. Got any advice for a future attempt?

Grab a bottle of window cleaner, or make up a soapy solution and doust the rubber cussions through the holes. Then use a large cresent wrench and grip through the holes and start working it. It will come off, but sometimes the rubber cushions stick tight and need some encouragement.
Greg

Thanks. I did try that method but didn't go too agressive because I didn't want to break anything. I thought I might missing something that wasn't covered in the manual. Next time I will exert my full will on it.

I caught mine when it was about halfway through. Couple of hard on and off cycles and it would have looked like yours.

Once there is play in the splines it doesn't take long.

This really needs to come off the wheel for a proper inspection and cleaning before relubing.

I really appreciate you taking the time to post those pic's.  Definately a warning to all, lube those splines every tire change!!

In talking with our wonderful knowledg base members here, the coupler was changed by Mama Kaw somewhere after 93 or so. To my understanding, the coupler became more of a wear item, mostly to save the spline gear on the pig. The coupler is a lot cheaper then the pig and its gearing. A good call by Kaw, just research a new pig and you will see why.
Lubing will help, but it is still going to wear.
Ride safe all.
Greg

d e a d

that's the way they all go...working fine, then nothing, and with the bike on te center stand there is enough contact to spin the wheel but not enough to drive the bike...seen it a dozen times in the last few years.
Get the rear wheel spinning good and clamp the brakes on hard, you will hear the sound of the splines grinding off the coupler really well if it's worn that far....

I wonder what been Don Ricks experience with these parts, he's traveled some 500K on the Concours

I suppose the best lube for this is moly paste? Works on anything with drive splines.

I suppose the best lube for this is moly paste? Works on anything with drive splines.

That is correct....

For those of us using extended wearing tires, how often should we take the wheel off and grease this?  My E3s have 18,000 miles on them.
Chris COG 5807