Author Topic: I have an oil leak  (Read 1723 times)

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Offline olebiker

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I have an oil leak
« on: May 14, 2009, 01:22:00 am »
I found today when I pulled the bags off that I have some leakage where the rear drive meets the swing arm. I assume that is just a gasket failure?  

Offline Slybones

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I have an oil leak
« Reply #1 on: May 14, 2009, 01:36:00 am »
Yes. Unfortunately its most likely the bevel gear case gasket. It was on mine, and I hear this is not too uncommon.     This is a reasonable job. Not too overly complicated. If you can remove the rear tire and shock for example. And do stuff like a valve job, you can do this. -- But removing the bevel drive means removing the whole swingarm, rear tire, final drive, etc. And then removing shifter, clutch slave, water pump etc on the front side. All to get the bevel drive out.    Assuming this is the problem, and your going to do all this, consider the 7th gear unit from Steve in Sunny Florida. You are literally going to do all the work anyways. And Steve will include the new gasket. It will even be the new update metal gasket not the crappy paper ones. So it wont leak again.  2003 Concours, 49K  COG #6953  IBA 28004  http://mysite.verizon.net/slybones/Concours/connieMain.htm  
2003 Concours, 121K
2005 GL1800ABS, 52K
COG #6953, IBA 28004

Offline Larry_Buck_FL

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I have an oil leak
« Reply #2 on: May 14, 2009, 09:20:00 am »
Slybones has made a good suggestion re: the 7th gear mod. However it might be helpful to determine what type oil is leaking. If it's engine oil, it can only come from the bevel gear housing; if it's 90 wt. gear oil, then it is from the pinion seal in the rear drive.    Hope this helps.  Larry Buck  COG 3451,SE-AD (Retired)Concourier C-10 Tech Editor ROK,MTF,IBA,MSF-RC  Buck Sport Touring-"Ride Far" www.bucksporttouring.com
Larry Buck - COG 3451, Retired SE-AD, now SE-AAD, Ex - Concourier C-10 Tech Editor, COG National Safety Officer, IBA 5581, MSF-Rider Coach, Forum moderator.

Buck Sport Touring-"Ride Far" www.bucksporttouring.com

Offline olebiker

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I have an oil leak
« Reply #3 on: May 14, 2009, 12:26:00 pm »
Aww crap and here I thought it was just the gasket where it is leaking.  

Offline Slybones

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I have an oil leak
« Reply #4 on: May 14, 2009, 05:59:00 pm »
It is just the gasket. And just like changing any other gasket, its pretty simple. The fun part is getting to the gasket.   2003 Concours, 49K  COG #6953  IBA 28004  http://mysite.verizon.net/slybones/Concours/connieMain.htm  
2003 Concours, 121K
2005 GL1800ABS, 52K
COG #6953, IBA 28004

Offline Brett0769

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I have an oil leak
« Reply #5 on: May 15, 2009, 01:49:00 pm »
Is this an inevitable leak? How many miles do you have Carl?  
'06 C10  Brett Hatfield  AMA# 1019197  COG# 8229 (CDA# 0267)    <a href="http://www.flickr.com/photos/brett0769/2793453582/" title="Trip Home by Brett0769, on Flickr"><img src="http://farm4.static.flickr.com/3223/2793453582_bba89ca959_t.jpg" width="100" height="75" alt="Trip Home" />[/url]

Offline Slybones

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I have an oil leak
« Reply #6 on: May 15, 2009, 05:51:00 pm »
Its like 1 in a 1000 or something. And its just enough of a project, I would wait and see if you are the lucky one. Mine went at 45K  2003 Concours, 49K  COG #6953  IBA 28004  http://mysite.verizon.net/slybones/Concours/connieMain.htm  
2003 Concours, 121K
2005 GL1800ABS, 52K
COG #6953, IBA 28004

Offline Raycad

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I have an oil leak
« Reply #7 on: May 15, 2009, 09:51:00 pm »
...when I pulled the bags...     "...where the rear drive meets the swing arm..."  Could it be the 4 bolt joint between the final drive and the swing arm ?    
Raymond Cadieux, Québec, Canada - 2005 Concours

Offline olebiker

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I have an oil leak
« Reply #8 on: May 16, 2009, 12:20:00 am »
Yes it is that joint. It is the O ring in the final drive that is leaking. I have ordered it and it seems like a fairly simple job. The bike has 50000 kms or 30000 miles.  

Offline Raycad

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I have an oil leak
« Reply #9 on: May 16, 2009, 09:18:00 pm »
Glad you found the problem. Mine ('05 with 54 000 km or 33 500 mi.) was leaking when new and repaired on warranty. Still weeping but I didn't bother, it just keeps the driveshaft sliding joint well lubed. When I remove the final drive and the 4 bolt joint is resting on the floor, it makes a puddle on the floor so I've to remember to keep the joint higher than the center of the drive. On the bike, the lower side of the joint gets slightly dirty, but no oil drops are visible.    Good luck with your repair. Keep us informed of the result. I think there are 2 O-rings plus 1 oil seal in that location.  
Raymond Cadieux, Québec, Canada - 2005 Concours