Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > BMW Tech

BMW Tech BMW Tech Forum - For Questions specific and of interest to BMW riders only. Questions comparing which bike is best etc go in the "Which Bike" forum.
Contact Overland Solutions for all your custom modifications and setup for overland travel.

Parts & accessories for adventure touring motorcycles including GPS mounts, panniers, luggage, protection, dry bags, camping gear, tools, books & DVDs.

LinkBack Thread Tools Display Modes
Old 5 Apr 2010
Registered Users
New on the HUBB
Join Date: Aug 2008
Location: melbourne
Posts: 6
89 K75 clutch problem?

Hey Guys,

I'm not much of a motorcycle mechanic so bare with me. Ok, I have an 89 K75 with 27000 miles on her. I've had it for about a year or so and have only had elecrical problems with it so far (bad connectors). The guy who sold it to me said the previous owner before him had lubricated the clutch splines right before selling it to him, and that he had only had it a couple months. So I figured I had a while until I would have to relube. Weather that has anything to do with my problem I'm not sure. That's were you guys come in. Anyway, here is what happened. I was cruising along at about 35mph when all of the sudden there was a terrible mechanical racket coming from the engine trany area. Obviously I pulled over to check it out. I shut the bike off and let it sit for a minute. When I restarted it it idiled fine, but as soon as I squeezed the clutch it made the same horrible sound.

So that's it. Is it the dreaded clutch splines? If, so what next?


Reply With Quote
Old 5 Apr 2010
Gold Member
Veteran HUBBer
Join Date: Apr 2006
Location: Philadelphia, US
Posts: 648
Your input shaft splines or the shaft itself sounds like the problem.
93 BMW K75s
Reply With Quote
Old 5 Apr 2010
Registered Users
Veteran HUBBer
Join Date: Oct 2002
Location: Stockholm - Sweden
Posts: 316
RealOEM.com * Diagram Selection

As you engage the clutch the noice occurs?
When in gear and pulling the clutch the noice is still there?
When in neutral, no noice?

Does the noice come from the grearbox or shaft?... no so easy to tell apart sitting on the bike as you might think...

Is the power transmission, propelling, affected?

And, by the way -never- belive what another person claims that s/he has done and not done concerning services when you aquire an object... do the service yourself = then you -know- -what- has been done... (been there done that - hence my sceptisism and "trust" in my fellow man).

Friend of mine called me in a situation as you describe, but with loss of propolsion... broken splines in the shaft/bevel... sounded real interesting over the cellular - ...oh,... he wasn't too happy... and he did not enjoy the comments from us riding -real- BMWs (airheads with shaft in oilbath i.e.)... -

¤ If propelling power is afflicted = it may be splines, somewhere in the power train... ¤
¤ If it is not afflicted... then you are facing a bearing that is more or less history... ¤
Drive Safely,
Reply With Quote
Old 30 Apr 2010
Registered Users
New on the HUBB
Join Date: Aug 2008
Location: melbourne
Posts: 6
decided to break her open; the clutch slines and input shaft splines are nuked. no problem, got a used clutch and shaft on ebay.
Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 Registered Users and/or Members and 1 guests)
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
clutch problem. help needed pls stormsearcher Yamaha Tech 6 13 Aug 2009 08:11
XTZ 660 TENERE Starter Clutch Problem..... kinghelfer Yamaha Tech 3 9 Aug 2009 01:27
Clutch problem? bacardi23 Yamaha Tech 3 29 Dec 2007 19:16
DR350s clutch problem? dr350ryder Suzuki Tech 7 11 May 2007 20:24


NEW! HU 2015 Motorcycle Adventure Travel Calendar is now available! Get your copy now for some terrific travel inspiration!

HUGE, 11.5 x 16.5 inches, beautifully printed in Germany on top quality stock! Photos are the winning images from over 600 entries in the 9th Annual HU Photo Contest!

Horizons Unlimited 2015 Motorcycle Adventure Travel Calendar.

"The calendar is magnificent!"

"I just wanted to say how much I'm loving the new, larger calendar!"

We share the profit with the winning photographers. YOU could be in the HU Calendar too - enter here!

Next HU Eventscalendar

See all events


HU DVD Autumn Special!

Take 40% off Road Heroes Part 1 until October 31 only!

Road Heroes features tales of adventure, joy and sheer terror by veteran travellers Peter and Kay Forwood (193 countries two-up on a Harley); Dr. Greg Frazier (5 times RTW); Tiffany Coates (RTW solo female); and Rene Cormier (University of Gravel Roads).

The first in an exciting new series, Road Heroes features tales of adventure, joy and sheer terror by veteran travellers."Inspiring and hilarious!"

"I loved watching this DVD!"

"Lots of amazing stories and even more amazing photographs, it's great fun and very inspirational."

"Wonderful entertainment!"

Check it out at the HU Store! Remember to use Coupon Code 'HEROES' on your order when you checkout.

Scottoiler automatic chain oilers. The most important accessory for your next motorcycle adventure!

Renedian Adventures

Renedian Adventures

What others say about HU...

"I just wanted to say thanks for doing this and sharing so much with the rest of us." Dave, USA

"Your website is a mecca of valuable information and the DVD series is informative, entertaining, and inspiring! The new look of the website is very impressive, updated and catchy. Thank you so very much!" Jennifer, Canada

"...Great site. Keep up the good work." Murray and Carmen, Australia

"We just finished a 7 month 22,000+ mile scouting trip from Alaska to the bottom of Chile and I can't tell you how many times we referred to your site for help. From how to adjust your valves, to where to stay in the back country of Peru. Horizons Unlimited was a key player in our success. Motorcycle enthusiasts from around the world are in debt to your services." Alaska Riders

contest pic

10th Annual HU Travellers Photo Contest is on now! This is an opportunity for YOU to show us your best photos and win prizes!

NEW! HU 2014 Adventure Travel T-shirts! are now available in several colors! Be the first kid on your block to have them! New lower prices on synths!

HU 2014 T-shirts now in!

Check out the new Gildan Performance cotton-feel t-shirt - 100% poly, feels like soft cotton!

What turns you on to motorcycle travel?

Global Rescue, WORLDwide evacuation services for EVERYONE

Global Rescue is the premier provider of medical, security and evacuation services worldwide and is the only company that will come to you, wherever you are, and evacuate you to your home hospital of choice. Additionally, Global Rescue places no restrictions on country of citizenship - all nationalities are eligible to sign-up!

New to Horizons Unlimited?

New to motorcycle travelling? New to the HU site? Confused? Too many options? It's really very simple - just 4 easy steps!

Horizons Unlimited was founded in 1997 by Grant and Susan Johnson following their journey around the world on a BMW R80 G/S motorcycle.

Susan and Grant Johnson Read more about Grant & Susan's story

Membership - help keep us going!

Horizons Unlimited is not a big multi-national company, just two people who love motorcycle travel and have grown what started as a hobby in 1997 into a full time job (usually 8-10 hours per day and 7 days a week) and a labour of love. To keep it going and a roof over our heads, we run events (22 this year!); we sell inspirational and informative DVDs; we have a few selected advertisers; and we make a small amount from memberships.

You don't have to be a Member to come to an HU meeting, access the website, the HUBB or to receive the e-zine. What you get for your membership contribution is our sincere gratitude, good karma and knowing that you're helping to keep the motorcycle travel dream alive. Contributing Members and Gold Members do get additional features on the HUBB. Here's a list of all the Member benefits on the HUBB.

Books & DVDs


All the best travel books and videos listed and often reviewed on HU's famous Books page. Check it out and get great travel books from all over the world.

Motorcycle Express for shipping and insurance!

Motorcycle Express

MC Air Shipping, (uncrated) USA / Canada / Europe and other areas. Be sure to say "Horizons Unlimited" to get your $25 discount on Shipping!
Insurance - see: For foreigners traveling in US and Canada and for Americans and Canadians traveling in other countries, then mail it to MC Express and get your HU $15 discount!

All times are GMT +1. The time now is 02:25.