Think I found it - Oil leak at push rod - Ducati Monster Forums: Ducati Monster Motorcycle Forum
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post #1 of 23 (permalink) Old 04-22-2008, 09:10 PM Thread Starter
yuu

 
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Think I found it - Oil leak at push rod

Late last year when it went to the shop the 1st of 2 times, they pointed out a fluid leak at my clutch slave. Turns out the slave was trashed and I replaced it. I noticed signs of wear on the push rod and its seals and replaced them all. This was between trips to the shop - and I was not running the bike since something needed checking on.

Bike went in for the 2nd go, came out and I had the oil woes described here an in my other threads. Since there was no running I never found this issue.

Seems the source of my troubles is a leak from the push rod and not any area touched by the service shop. I need to do a little more cleaning to be 100% sure. But in my quick look there sure seemed to be fresh oil on the rod end that was seeping down around the sprocket and down to the side stand.

Since the push rod and it's seals are brand new I'm a little mystified. I've got another set of seals that I plan to put in place
-But are there any tricks to this?

I didn't think a push rod should be any mroe complex than sliding it into place. Is there anything else in there that could fail and result in a leak?


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post #2 of 23 (permalink) Old 04-22-2008, 10:16 PM Thread Starter
yuu

 
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Re: Think I found it - Oil leak at push rod

Thanks but mines leaking on the slave side (left) of the bike. Not out the right side through my clutch.

Seems my orings aren't sealing things off, which I find odd since they have about 150 miles on them. So I'm wondering a bit if somethings off...
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post #3 of 23 (permalink) Old 04-22-2008, 10:29 PM

 
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Re: Think I found it - Oil leak at push rod

you sure the o-ring under the slave is in place and didn't get crushed? happened to me once.

which slave do you have by the way?
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post #4 of 23 (permalink) Old 04-23-2008, 05:58 AM

 
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Re: Think I found it - Oil leak at push rod

The push rod didn't have any burrs or nicks on it did it? Excessive wear?

Does your pushrod spin all the time? If so you need a new bearing in the pressure plate, and maybe it pushing the oil out by spinning.
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post #5 of 23 (permalink) Old 04-23-2008, 07:21 AM
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Re: Think I found it - Oil leak at push rod

it's usually the sealer between the cases and alt cover gone bad. remove the alt cover and regoop it.
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post #6 of 23 (permalink) Old 04-23-2008, 07:38 AM

 
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Re: Think I found it - Oil leak at push rod

Quote:
Originally Posted by ducpainter
The push rod didn't have any burrs or nicks on it did it? Excessive wear?

Does your pushrod spin all the time? If so you need a new bearing in the pressure plate, and maybe it pushing the oil out by spinning.
just was i was thinking.... but only because I F-ed up my bearing changing plates....got a new one from lt snyder (along with his book) and did it right the second go
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post #7 of 23 (permalink) Old 04-23-2008, 08:37 AM Thread Starter
yuu

 
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Re: Think I found it - Oil leak at push rod

The clutch slave is an Evo unit so it doesn't have the stock set-ups o-ring.

The pressure plate bearing has 6k on it. It's one that comes with Speedy Moto plates. I had the plate off a while ago and checked the bearing of any signs of binding. It spun freely w/o any signs of binding/grinding/roughness. But at 6k, it wouldn't kill me to replace it.

The current push rod is less than 200 miles old. When I got it I didn't note any burrs or damage - but I didn't look over it with a magnifying glass either.
I have not pulled it from the bike as of yet to look for signs of wear.

The old one showed signs of wear - but it was 24k miles old, so that's kind of expected.

What's a good way to check the rod for spinning?

Quote:
Originally Posted by brad black
it's usually the sealer between the cases and alt cover gone bad. remove the alt cover and regoop it.
Care to go a little more indepth for me?
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post #8 of 23 (permalink) Old 04-23-2008, 10:54 AM
 
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Re: Think I found it - Oil leak at push rod

What Brad is referring to is a leak from the side cover in the area of the clutch slave that can happen if the sealer dries up and cracks. The only cure is to remove the sidecover and reseal or replace with one of Chris Kelley's gaskets http://www.ca-cycleworks.com/shop/ca...ati/maint.html Scroll down.



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post #9 of 23 (permalink) Old 04-23-2008, 11:51 AM Thread Starter
yuu

 
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Re: Think I found it - Oil leak at push rod

Any particular way to tell if the leak is from the push rod and its seals vs. the liquid gasket?

Or should I just look at cleaning up, then replacing my bearing and push rod seals to see if that's a cure - then take it from there?
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post #10 of 23 (permalink) Old 04-23-2008, 02:26 PM
 
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Re: Think I found it - Oil leak at push rod

They tend to leak behind the slave. Remove the slave and sprocket cover, clean well. I am not sure if you can run it with the slave off, so unless someone else knows better, put it back. Remove slave again and inspect. If needed, use an aerosal powder.



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