K75S - gear oil on rear wheel - K-Bikes.com - Excellence in Motion
 
LinkBack Thread Tools Display Modes
post #1 of 8 (permalink) Old Sep 2nd, 2010, 7:57 pm Thread Starter
Noob
 
Join Date: May 2010
Location: Winston-Salem, NC, US
Posts: 6
K75S - gear oil on rear wheel

I noticed a bit of oil sitting on the back rim today and initially thought it was coming from the final drive drain. I made sure the plug was snug and cleaned the area. Shortly after, noticed a couple of new drops of oil. It appears to be coming from the wheel side of the final drive (between the brake disc and final drive unit - so I can't see in there w/o taking it apart). Any advice on what I should be looking for before I tear into this? This is my 1st bike, owned less than a year and not totally familiar with all the maintenance stuff yet.

Thanks in advance!

Scot
1993 K75S - 'Black Francis'
smejan is offline  
Sponsored Links
Advertisement
 
post #2 of 8 (permalink) Old Sep 2nd, 2010, 9:05 pm
Rookie
 
Join Date: Aug 2007
Location: El Paso, TX, USA
Posts: 41
This may be totally irrelevant, but...

I have a 2003 K12LT. After towing it back from Washington state, I found a large oil stain on the wheel and trailer floor.

I thought it was final drive failure, but the K12LT folks said that it was simply a result of oil venting from the FD (through a vent on the top of the FD) because of major altitude changes--something they'd experienced while shipping their bikes by air or otherwise dragging (not riding) the bike over significant altitude gradients.

While I have a K75 (91) and a K11LT (93) I can't say that I've looked for such a vent on your model, but it's a marginal possibility.

Last edited by ljjohns; Sep 2nd, 2010 at 9:06 pm. Reason: typo
ljjohns is offline  
post #3 of 8 (permalink) Old Sep 3rd, 2010, 1:07 am
Enthusiast
 
chaos's Avatar
 
Join Date: Jun 2008
Location: Moraine, OH, USA
Posts: 305
another possibility is a leaky shock. Should be easy to spot if you look closely. Mine looked like this.......
Attached Thumbnails
Click image for larger version

Name:	shock.jpg
Views:	48
Size:	126.2 KB
ID:	12530  
chaos is offline  
Sponsored Links
Advertisement
 
post #4 of 8 (permalink) Old Sep 4th, 2010, 10:58 am Thread Starter
Noob
 
Join Date: May 2010
Location: Winston-Salem, NC, US
Posts: 6
Thanks for the detail, Chaos. Here's a shot of what I've got. The oil is coming from the wheel side of the final drive housing and dripping on the rear brake disc. Any thoughts on where I should start digging?
Attached Images
File Type: jpg gear oil leak.jpg (185.2 KB, 22 views)

Scot
1993 K75S - 'Black Francis'
smejan is offline  
post #5 of 8 (permalink) Old Sep 4th, 2010, 12:43 pm
PsyKotic Waterfowl
 
Join Date: Aug 2006
Location: Seattle, WA,
Posts: 1,328
Sounds like the seal on the axle is bad.
FlyingDuck is offline  
post #6 of 8 (permalink) Old Sep 4th, 2010, 1:43 pm Thread Starter
Noob
 
Join Date: May 2010
Location: Winston-Salem, NC, US
Posts: 6
Quote:
Originally Posted by FlyingDuck
Sounds like the seal on the axle is bad.
This would be the seal for the FD, correct? (FD = final drive, not Flying Duck)

Scot
1993 K75S - 'Black Francis'
smejan is offline  
post #7 of 8 (permalink) Old Sep 4th, 2010, 2:58 pm
PsyKotic Waterfowl
 
Join Date: Aug 2006
Location: Seattle, WA,
Posts: 1,328
Quote:
Originally Posted by smejan
This would be the seal for the FD, correct? (FD = final drive, not Flying Duck)
Yep.
FlyingDuck is offline  
post #8 of 8 (permalink) Old Sep 4th, 2010, 7:45 pm
Rookie
 
Join Date: Aug 2007
Location: El Paso, TX, USA
Posts: 41
Just thought vented lube from the FD was worth a shot: it looks like the vent at the top of the FD on the earlier K-bikes is similar to the one on my K12.

The determining factor, however, would be the bike moving over significant altitude gradients while not under power; the indicator would be a sheen of oil from that vent.

It's a slow Saturday night; after forty years at UT El Paso, I have no interest in going to a football game which is supposed to be a push-over but, as too often has happened in the past, may be a disaster.

Larry Johnson
1991 K75RT
1993 K11LT
2003 K12LT
ljjohns is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the K-Bikes.com - Excellence in Motion forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Absolutely the most detailed description of the K1200S I've come across... sinc K12/1300S 20 Jul 19th, 2014 10:04 am
1999 K1200RS brake pads and rotors (where do you guys generally get parts?) donnatello K1200RS/GT (Classic) 34 Nov 12th, 2009 5:17 am
The best way to change the Rear Gear Oil..and easier than I thought kbmwrs K12/1300GT (Next Gen) 20 Sep 14th, 2009 2:37 pm
Singing front brake SydneyGuy K12/1300R/R-Sport 70 Jan 3rd, 2009 10:49 pm
rear wheel bearing? Peterh Bike Talk 4 May 31st, 2007 5:47 am

Posting Rules  
You may post new threads
You may 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

 
For the best viewing experience please update your browser to Google Chrome