Author Topic: K75S won't shift down easliy  (Read 24004 times)

Offline Laitch

  • Faster than a speeding pullet
  • Administrator
  • ^ Quintessential Motobricker
  • Posts: 11463
Re: K75S won't shift down easliy
« Reply #25 on: January 09, 2016, 11:24:44 PM »
Thanks for the update, Glenn. Seems like you've got the nerve and skill to do what's needed. How many kilometers on the clock?
  • Along the Ridley in Vermont.
  • 1995 K75 102,000 miles

Offline gmawby

  • Motobrick Curious
  • Posts: 26
Re: K75S won't shift down easliy
« Reply #26 on: January 09, 2016, 11:56:32 PM »
Laitch,
there is 135,000 Kms on the clock.  Not much really :-)

  • Sydney
  • 91 K75S
Glenn,

Offline Laitch

  • Faster than a speeding pullet
  • Administrator
  • ^ Quintessential Motobricker
  • Posts: 11463
Re: K75S won't shift down easliy
« Reply #27 on: January 10, 2016, 12:48:22 AM »
If it were my bike, I'd check the friction disc for wear. It's only a little more work. Mine checked out with 5.00mm at 80K km.
You may not need this reference but here it is anyway. Start viewing a 4:28.

Anticipating a successful forth-going after reassembly is complete. :riding:
  • Along the Ridley in Vermont.
  • 1995 K75 102,000 miles

Offline gmawby

  • Motobrick Curious
  • Posts: 26
Re: K75S won't shift down easliy
« Reply #28 on: January 10, 2016, 01:10:05 AM »
Hi Laitch,

thank you!  I like the hysterical laughter at about 9:50!

I'll probably take it off and have a look.


 
  • Sydney
  • 91 K75S
Glenn,

Offline gmawby

  • Motobrick Curious
  • Posts: 26
Re: K75S won't shift down easliy
« Reply #29 on: January 13, 2016, 06:39:01 PM »
Hi,
I took the clutch friction plate out and it measured over 5mm so I put it back together.  The bike is back on the road and shifting smoothly.   I hope I don't have to do it again for a long while.

  • Sydney
  • 91 K75S
Glenn,

Offline rbm

  • ^ Quintessential Motobricker
  • Posts: 2308
Re: K75S won't shift down easliy
« Reply #30 on: January 13, 2016, 07:05:18 PM »
It's recommended to use moly grease on the clutch splines, the pushrod end and the ring upon which the diaphragm rests.  All of these need grease to ensure the smoothest clutch engagement/disengagement.

It's probable that the clutch friction plate is still within the service limits if the milage on the bike is low.  I helped a friend with a spline lube this past weekend and his was still 5.05mm even after 30 years and 80K kilometers.
  • Regards, Robert
Toronto, Ontario

1987 K75 - Build Blog @http://k75retro.blogspot.ca/

Offline Laitch

  • Faster than a speeding pullet
  • Administrator
  • ^ Quintessential Motobricker
  • Posts: 11463
Re: K75S won't shift down easliy
« Reply #31 on: January 13, 2016, 08:06:17 PM »
Good work, Glenn!
  • Along the Ridley in Vermont.
  • 1995 K75 102,000 miles

Offline gmawby

  • Motobrick Curious
  • Posts: 26
Re: K75S won't shift down easliy
« Reply #32 on: February 22, 2016, 02:39:40 AM »
Hi,
my shifting problem came back after about 2000 kms so I took it to a dealer.   They took the gear box apart and found that the shifter drum(?) and shifter were worn.  I've had new bearings and good drum and shifters fitted and it changes great.

Good for another 25 years!

Glenn.
  • Sydney
  • 91 K75S
Glenn,

Offline Martin

  • ^ Quintessential Motobricker
  • Posts: 4475
Re: K75S won't shift down easliy
« Reply #33 on: February 22, 2016, 04:04:29 AM »
Glad to see your problem is solved, now go for some long rides, and enjoy the fruits of your labour. :clap:
Regards Martin.
  • North Lakes Queensland Australia
  • 1992 K75s Hybrid, Lefaux, Vespa V twin.

Offline Laitch

  • Faster than a speeding pullet
  • Administrator
  • ^ Quintessential Motobricker
  • Posts: 11463
Re: K75S won't shift down easliy
« Reply #34 on: February 22, 2016, 07:42:39 AM »
. . . so I took it to a dealer. . . . and it changes great.
Good for another 25 years!
That was a good decision, Glenn. I hope crowd-sourcing was unnecessary. :hehehe

If it had been my bike I probably would have kept stomping on that shifter trying to make it conform to my idea of reality until I'd ground down the guts of the transmission into garden mineral dust and wound up pushing it into the shop.

Good riding and thanks for the update!
  • Along the Ridley in Vermont.
  • 1995 K75 102,000 miles

Offline kris

  • ^ SuperNatural Motobricker
  • Posts: 590
Re: K75S won't shift down easliy
« Reply #35 on: February 22, 2016, 02:49:42 PM »
Too bad the lube didn't do it. The good news is that you got to meet Chris Harris. I could watch this guy for hours. His somewhat rough countenance is a nice balance to the snooty brand of bike he works on, don't you think?? And who can beat that laugh!! Price-less.

Have fun!
  • In The Hammer!! Hamilton, Ontario, Canada
  • 1986 K100RT (Heinz) 2004 Kawasaki Concours (Eddy) 2007 Moto Guzzi Breva 1100 (Linda) Previous: 1968 Honda CD175 1973 Kawasaki S2350 1975 Honda CB550K
"I got bike fever bad!!"

Offline chrisrushlau

  • Curious
  • Posts: 2
Re: K75S won't shift down easliy
« Reply #36 on: April 29, 2016, 10:08:18 AM »
my shifting problem came back after about 2000 kms so I took it to a dealer.   They took the gear box apart and found that the shifter drum(?) and shifter were worn.  I've had new bearings and good drum and shifters fitted and it changes great. [as of February 22, 2016]

Can I ask if the problem has stayed fixed with that work having been done?  I have the exact same syndrome on my K75RT, 59K miles, which I bought last month and have put 600 miles on--and the shifting seems to be getting worse.


  • Portland, Maine, USA
  • K75RT 1995

Offline gmawby

  • Motobrick Curious
  • Posts: 26
Re: K75S won't shift down easliy
« Reply #37 on: April 29, 2016, 05:42:53 PM »
Hi,
I rode the bike for about 100 K and I had a problem shifting UP from 1 to 2 so I took it back.  The shop took it apart and fixed it for free ( worn selector that they missed/forget to change).   I've done over 1000 km since and it is fine.


glenn.
  • Sydney
  • 91 K75S
Glenn,

Offline chrisrushlau

  • Curious
  • Posts: 2
Re: K75S won't shift down easliy
« Reply #38 on: April 29, 2016, 06:03:02 PM »
What do you think of the idea that this is just the way these K-75's are?  Part of this "syndrome" as I called it might be the normal fact that we don't notice everything with crystal clarity and when we do notice something we seize on it in horror, not comparing it to all the similar sets of circumstances.  I'll go further out on the limb and say that maybe "these Germans" build transmissions with other ends in view so that if the transmission doesn't go "clunk" when you shift, you're not worthy to ride the bike.
Well, we shall see, if we live long enough.
I bought this bike after a guy creamed me on my F650CS from another member of a BMW club, and that F bike was my first, I rode it for ten years from 1.7K miles to 36K miles, after a few years thirty years ago with an R-69US and then a couple of years with a junker Suzuki, neither of which I took care of.  By contrast I did the scheduled maintenance by the book with the F bike, at a dealer.  The seller of the K-75 and a couple of other senior members (we're all senior members) are all honorable gentlemen of the road and in fact these other two men superintended at the sale like attendants at a wedding.   I suspect that in general they're waiting for me to prove myself worthy of this bike.
All those dancing emoticons sure are annoying.
Thanks for your comment and experience.
  • Portland, Maine, USA
  • K75RT 1995

Tags: