Gday everyone,
I walked out to the Monster the other day to see a couple of tiny drops of oil on the ground beneath the engines left side, of course I got pedantic and dug out the head-torch :rolleyes: The bikes a 2006 M620 with ~ 20,000km's on the clock. Anyway, turns out there is a little oil leak coming from the generator cover/case joint. This being my first Duc I'm not too sure how the liquid gaskets work but I did notice when I was cleaning the bike for the very first time there was a little "fringe" of excess gasket sticking out between the case and cover. I accidentally rubbed some of this off... It didn't seem like it did any damage to the gasket between the mating surfaces - but I guess who knows? This is a pic of the "fringe" I'm taking about - you can see the arrow is pointing to where it has had a bit rubbed of.
(http://img818.imageshack.us/img818/1314/img1905small.jpg)
This next one is a pic of the actual cover (clearly!). The arrow on the left shows where the oil's pooling/dripping, I noticed a little bit weeping through down behind the front sprocket too where the other arrow is.
(http://img684.imageshack.us/img684/6301/img1903small.jpg)
As the pic shows, it's not a huge leak but I'd like to fix it up all the same! The bike is going in for a 20,000km service shortly but I am going to do a lot of that service myself so hopefully the shop won't have to drain the oil. I wondered if because of that I might be able to fix up this leak myself. What do you guys think is likely to be causing it? A worn gasket, damaged cover, under-torqued bolts?... I've really got no idea how long that gasket has been there but I would assume it could be 20,000ks/5 years old - is it usual that they might start to fail after that timeframe?
As you can probably see I'm a little lost of where to start here, whats the best way to go about sealing her up again? Anyone else had a similar issue?
Cheers for any help!
Tk
Probably clutch pushrod O-rings have gone flat.
Prior to that, though, pull off the slave cylinder, and snug up all of those sidecover bolts, 6 ft-lb is plenty.
Clean it all up, and reinstall the slave cylinder.
See if that does it.
Quote from: Speeddog on July 29, 2011, 09:47:43 PM
Probably clutch pushrod O-rings have gone flat.
Prior to that, though, pull off the slave cylinder, and snug up all of those sidecover bolts, 6 ft-lb is plenty.
Clean it all up, and reinstall the slave cylinder.
See if that does it.
Take off the plastic cover protecting your front sprocket. Does it look like mine did:
(https://lh5.googleusercontent.com/-Xttv2Rzsvzk/TjShXl1ChqI/AAAAAAAAAWY/aKr2LNkWABs/s800/IMG_0556.JPG)
If so, problem is the clutch pushrod O-ring as Speeddog said. I had the same problem. Easy/cheap fix.
The excess stuff you are describing is fine to peel/fall off. I asked the same question when I had a shop fix my clutch pushrod O-ring.
Quote from: positivecarry on July 30, 2011, 05:30:15 PM
Take off the plastic cover protecting your front sprocket. Does it look like mine did:
(https://lh5.googleusercontent.com/-Xttv2Rzsvzk/TjShXl1ChqI/AAAAAAAAAWY/aKr2LNkWABs/s800/IMG_0556.JPG)
If so, problem is the clutch pushrod O-ring as Speeddog said. I had the same problem. Easy/cheap fix.
The excess stuff you are describing is fine to peel/fall off. I asked the same question when I had a shop fix my clutch pushrod O-ring.
Cheers for that info about the excess gasket! I actually did take the cover off yesterday when I took those photos. It looked VERY similar to that, I cleaned it up some and took a photo - but you can see the grime and crap where I couldn't reach without pulling the sprocket. I assumed that was excess chain lube/dirt but the pushrod leak sounds more likely! Here's a pic of mine - after I cleaned it up a bit.
(http://img96.imageshack.us/img96/8207/img1904small.jpg)
I'll pull the clutch slave off this arvo and have a look at it, snug up the cover bolts and go from there.
Cheers,
Tk
Alright, I ran out of time and couldn't get to the bike today but will tomorrow arvo. Anyway I was looking at my parts catalog and trying to get an idea of where/what these o-rings are. I found this page which I "assume" shows the clutch pushrod at #16, the pushrod o-rings at #18, and the slave o-ring at #17... Anyone able to confirm or deny that for me?
(http://img718.imageshack.us/img718/2329/ducclutch.jpg)
Cheers,
Tk
Quote from: Queestce on July 31, 2011, 07:46:39 AM
the clutch pushrod at #16, the pushrod o-rings at #18, and the slave o-ring at #17... Anyone able to confirm or deny that for me?
http://img718.imageshack.us/img718/2329/ducclutch.jpg (http://img718.imageshack.us/img718/2329/ducclutch.jpg)
you are correct. I had the same thing last year (?) when my kickstand started leaking oil. it's really easy. the hardest part is taking the old orings off.
Alright I finally got around to taking the slave off to have a look, does seem like o-rings might be the culprit. I took the o-ring off the back of the slave and snapped a pic of it which I'll post below. There was a bit of oil "inside" the slave which I assume means both the pushrod o-rings, and the slaves o-ring are both gone? Seems like a simple and cheap enough fix, but I wondered - do I need to drain the oil before I do the pushrod orings? I would have thought when I slide it out far enough to get at them the oil will start flowing. Or can I just tilt the bike over the other way?...
(http://img849.imageshack.us/img849/2208/img1913small.jpg)
Cheers,
Tk
I have exactly the same leak as you guys on my 900ie .
I was going to put a new slave on mine asap as I'm a bit concerned with it leaking as it is standard unit and has 27,000km's on it .
Anyone got some pics of the slave cylinder off and removing the two orings in the case side would be awesome to see ?
Not too sure how the 900 looks, but I assume it doesn't have a slave similar to the pictures I posted?...
Yes the slave is the same , I was just trying to figure out exactly where the two o-rings are situated and what retains them ?
Are they in the side case itself or just captive between the slave and the casing etc ?
Quote from: jaso1 on August 08, 2011, 01:22:22 AM
Yes the slave is the same , I was just trying to figure out exactly where the two o-rings are situated and what retains them ?
Are they in the side case itself or just captive between the slave and the casing etc ?
The larger o-ring is between the slave cylinder and the case side. The two smaller o-rings ride in grooves machined into the surface of the push rod. Pull your push rod out and you'll see what I mean.
Quote from: A.duc.H.duc. on August 08, 2011, 04:39:35 AM
The larger o-ring is between the slave cylinder and the case side. The two smaller o-rings ride in grooves machined into the surface of the push rod. Pull your push rod out and you'll see what I mean.
Yep, take a look at that parts diagram up above. The bigger o-ring (#17) sits in the space on the back of the slave that you can see in my picture. The two small o-rings (# 18) go on the pushrod in two little milled grooves. What I'm still wondering is, to change the o-rings will I need to drain my oil, or will leaning the bike over to the right be enough to stop oil going everywhere when I pull out the pushrod? Also, can I pull the pushrod out totally, or should I just do it enough to expose the o-rings? Is there anything special about taking the old ones off vs putting the new ones on, or should I just "roll" them into place along the rod?...
Hopefully my local dealer has the o-rings in stock and I can get it done this week, I'll take some pics and update the thread incase anyone searches for it and has the same questions as me!
Appreciate the help, cheers!
Tk
You do not need to drain the oil, you can even leave the bike on the sidestand.
You can pull the pushrod out completely.
Hook the old O-rings out with a probe or some wire or tiny screwdriver.
Roll the new ones on.
Put a little grease or oil on the o-rings.
Clean the area before you put the pushrod back in.
Quote from: Speeddog on August 08, 2011, 10:57:56 AM
You do not need to drain the oil, you can even leave the bike on the sidestand.
You can pull the pushrod out completely.
Hook the old O-rings out with a probe or some wire or tiny screwdriver.
Roll the new ones on.
Put a little grease or oil on the o-rings.
Clean the area before you put the pushrod back in.
Awesome mate, exactly what I wanted to hear! Sounds like a super easy fix which is always good. That's one thing that's surprised me about the Duc - I thought it would be an absolute pig to work on, but everything is so cleverly put together it's always a dream. Now I've just got to find someone with those o-rings in stock!
Cheers for all the help,
Tk