Flakes in Rear Drive Oil What Now? - BMW Luxury Touring Community
 
LinkBack Thread Tools Display Modes
post #1 of 8 Old Jun 9th, 2009, 8:08 pm Thread Starter
Senior Member
 
Join Date: Nov 2003
Location: Grand Forks, ND, USA
Posts: 273
Flakes in Rear Drive Oil What Now?

20,000 miles ago I installed the 17 ball bearing in my rear drive on 2000 K1200LT. I didn't measure and set the preload just put the spacers back in. Changed oil every 3th miles and had nice clean oil. On my last oil change at 20,000 miles, oil had very tiny tiny flakes of metal suspended in the oil. Flakes were so small they were floating in the oil and none magnet. Should I ride it or put in a new bearing and set preload?
Small amount of the standard black sludge on magnet.

Jim
Jimbo3 is offline  
Sponsored Links
Advertisement
 
post #2 of 8 Old Jun 9th, 2009, 10:08 pm
Senior Member
 
cfell's Avatar
 
Join Date: Apr 2004
Location: Round Rock, TX, USA
Posts: 7,794
Re: Flakes in Rear Drive Oil What Now?

Jim.. change oil again in 500 miles... see if you still get trash.. during that time be very careful... check often.

If you plan a long trip I'd suggest changing and setting measurements to the best of your ability.

Sorry for your troubles..
cfell is offline  
post #3 of 8 Old Jun 10th, 2009, 5:14 am
Senior Member
 
CharlieVT's Avatar
 
Join Date: Jun 2002
Location: The Deep South of Vermont
Posts: 4,389
Re: Flakes in Rear Drive Oil What Now?

Quote:
Originally Posted by kb0lxx
20,000 miles ago I installed the 17 ball bearing in my rear drive on 2000 K1200LT. I didn't measure and set the preload just put the spacers back in. Changed oil every 3th miles and had nice clean oil. On my last oil change at 20,000 miles, oil had very tiny tiny flakes of metal suspended in the oil. Flakes were so small they were floating in the oil and none magnet. Should I ride it or put in a new bearing and set preload?
Small amount of the standard black sludge on magnet.

Jim
Jim,
I wouldn't ride far from home.
New metal particles after 20K miles of clean oil changes?
When you replaced the bearing was it because of a failed bearing our just a preemptive rebuild?
The particles were suspended in the oil. Are they magnetic? Or aluminum?
Suggestion: put the bike on the centerstand, push the brake pads away from contact with the rotor or remove the brake caliper and then check the wheel for smoothness. Much as been said about checking for lateral play, but I think roughness during turning of the wheel is more likely to be an early indication of bearing failure.
However, there is no substitute for opening and inspecting the drive.

If it were mine, and knowing what I think I know about these things, I'd open and inspect the drive.
If you're going to continue to ride, don't go anywhere you aren't prepared to stop and trailer.
I've changed a few things in my procedure but the video still is a good reference if you haven't seen it. PM me if you think I can be of any help.
http://www.bmwlt.com/uploads/lt_final_drive_rebuild.wmv
Sorry for your troubles and good luck.
CharlieVT is offline  
 
post #4 of 8 Old Jun 10th, 2009, 8:19 am
Senior Member
 
jhsonderb's Avatar
 
Join Date: Jul 2005
Location: Chicago, IL, USA
Posts: 507
Re: Flakes in Rear Drive Oil What Now?

CharlieVT... Excellent video! Thanks.

Jim S.
'07 SturmGrau K1200LT

“Not all those who wander are lost.”


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
jhsonderb is offline  
post #5 of 8 Old Jun 10th, 2009, 8:31 am
Lifetime Supporter
 
deanwoolsey's Avatar
 
Join Date: Aug 2008
Location: Topeka, KS, USA
Posts: 3,105
Re: Flakes in Rear Drive Oil What Now?

Listen to Curtis. He is a wise man when it comes to rear ends.

Somehow that sounded rather odd.

Seriously, anything other than black fuzzies is probably a sign of impending (and certain) failure. It needs to be rebuilt with the proper pre-load to prevent this from happening again and the sooner the better or you may damage the gear-set which increases the cost.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
deanwoolsey is offline  
post #6 of 8 Old Jun 10th, 2009, 7:42 pm
Senior Member
 
CharlieVT's Avatar
 
Join Date: Jun 2002
Location: The Deep South of Vermont
Posts: 4,389
Re: Flakes in Rear Drive Oil What Now?

Quote:
Originally Posted by deanwoolsey
Listen to Curtis. He is a wise man when it comes to rear ends.
Somehow that sounded rather odd.
Seriously, anything other than black fuzzies is probably a sign of impending (and certain) failure. It needs to be rebuilt with the proper pre-load to prevent this from happening again and the sooner the better or you may damage the gear-set which increases the cost.
Okay, you got me laughing out loud.
Let's say I have made an effort to learn about KLT Final Drives, reasons for failure and methods for repair.... but know nothing about "rear ends".
CharlieVT is offline  
post #7 of 8 Old Jun 11th, 2009, 9:16 pm Thread Starter
Senior Member
 
Join Date: Nov 2003
Location: Grand Forks, ND, USA
Posts: 273
Re: Flakes in Rear Drive Oil What Now?

The rebuild I did was a preemptive rebuild as I figured the 17 ball bearing was the fix. But it now seems the fix is the correct preload. So I'm going to do a rebuild and follow Charlies video for the preload. My plan was to just replace the bearing every 25th miles as part of normal service. So I'll just do it a little early at 20th. I'm going to ride it for about 500 miles and recheck. Want to see if the flakes are magnetic or aluminum. Than replace the bearing. Charlie thanks for the video.
Jim
Jimbo3 is offline  
post #8 of 8 Old Jun 12th, 2009, 5:35 am
Lifetime Supporter
 
Voyager's Avatar
 
Join Date: Jun 2007
Location: Lawrenceville, PA, USA
Posts: 7,097
Re: Flakes in Rear Drive Oil What Now?

Quote:
Originally Posted by kb0lxx
The rebuild I did was a preemptive rebuild as I figured the 17 ball bearing was the fix. But it now seems the fix is the correct preload. So I'm going to do a rebuild and follow Charlies video for the preload. My plan was to just replace the bearing every 25th miles as part of normal service. So I'll just do it a little early at 20th. I'm going to ride it for about 500 miles and recheck. Want to see if the flakes are magnetic or aluminum. Than replace the bearing. Charlie thanks for the video.
Jim
I can understand your thinking, but I tend towards the other direction. My experience with both airplanes and road vehicles is that the biggest risk of a problem is right AFTER work is done on the airplane or vehicle. I tend to go with the "if it ain't broke, don't fix it" school of thought. I tend to believe also that improper preload is the main failure cause and thus if I have a bearing that is properly installed, I'm just going to "ride it!"

I'd be more concerned about getting a new bearing that itself has a problem and thus I'd be taking out a good bearing and installing one that had improper heat treatment or some other invisible defect.

2017 KLR650 "Mule"
2007 K1200LT "Starship Enterprise", VOICE II, Navigator V, Motorrad Communicator
1987 Kawasaki Voyager XII
1976 Kawasaki KH400
1973 Kawasaki 100 G5
1970 Rockford Chibi (the orange one)

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Voyager is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the BMW Luxury Touring Community 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











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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
Rear Drive Survey Results eljeffe K1200LT 10 Dec 9th, 2007 3:53 am
Final Drive no longer maintenance free for 2007+ models with new style rear drive eljeffe K1200/1300GT (The Next Generation) 4 Sep 7th, 2006 1:41 pm
Tools needed to change out rear drive? pdrstraw K1200LT 5 Jun 29th, 2006 9:36 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