Small leak here and there - MVAgusta.net
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post #1 of 20 (permalink) Old 03-28-2014, 08:05 AM Thread Starter
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Small leak here and there

Hi everyone! so my 312RR is rinning strong, really strong!! but there are a couple of oil leaks and a water leak as well...
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post #2 of 20 (permalink) Old 03-28-2014, 08:06 AM Thread Starter
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I wonder if anyone could point me in the right direction here and tell me what parts I would need to purchase to fix theese small issues. Thanks!
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post #3 of 20 (permalink) Old 03-28-2014, 10:06 AM
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I too always have oil around the shift lever. Wonder if it's the shift lever seal that has given out. But it's also very close to te oil pan gasket and kickstand. Might be one or both.

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post #4 of 20 (permalink) Old 03-28-2014, 02:45 PM
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I'll take a shot at each one of these leaks!:

Firstly, the water pump. There is a hole underneath where the pump slots in that is supposed to permit water to drain out instead of contaminating the oil if the water pump's own seal leaks. However, it's possible that with heating cycles, very small amounts of crankcase oil could migrate the other way, past the seal and then drip out. Nothing major to worry about.

The water pump splits into two halves. Between them is a rubber o-ring. The two halves are pinched together by the three(?) bolts that clamp it to the side of the engine. If one of these isn't tight enough, or perhaps has threaded itself, then it's possible the two halves are not tight enough together to pinch the o-ring and fully seal it. But you would see water leaking and not oil. If it tightens up alright then you could always pull it apart and add silicon sealant.

Secondly the clutch slave sludge: The clutch salve is the same design and uses the same internal parts as the old Ducati 9x6/748 range. The piston seal can get contaminated really easily and pass microscopic debris past it into the fluid and graze the bore. This makes the clutch fluid blacken and causes leaks. Usually cleaning up the seal and bore occasionally help stem the leak. However, what I think the majority of the sludge you see is (and I've always got this on my 748, old F4 750 and new MY10 F4), is simply melting chain lube. It gets flicked off of the front sprocket and builds up inside the cover. It then gets heated up by the engine temperature and just runs down onto the side stand. Pulling off the sprocket cover (easy job) and cleaning out the gunk build up will help. If you use any kind of chain cleaning solution, this will inevitably also get flung off the front sprocket and dissolve the gunk build up, making it run.

Si

Last edited by TheCatWhisperer; 03-28-2014 at 02:47 PM.
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post #5 of 20 (permalink) Old 03-28-2014, 08:10 PM
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Wink leaker?

Nico;
1st picture of the clutch slave might be chain lube(it is on mine) or a leaking slave smell the fluid you'll know if the slave is leaking

2nd picture of water pump the leak is probably from picture #3 or the drain bolt right below "can be seen"

4th picture don't think so

5th picture over flow hose dumps above there....reroute it and see if it stops......did you fill the header tank above MIN?


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post #6 of 20 (permalink) Old 03-31-2014, 07:14 AM Thread Starter
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Thanks everyone for the oppinions!!
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post #7 of 20 (permalink) Old 03-31-2014, 07:15 AM Thread Starter
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Quote:
Originally Posted by mv2envy View Post
I too always have oil around the shift lever. Wonder if it's the shift lever seal that has given out. But it's also very close to te oil pan gasket and kickstand. Might be one or both.
does´nt seem to be that much of a problem right?? thanks!
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post #8 of 20 (permalink) Old 03-31-2014, 07:17 AM Thread Starter
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Quote:
Originally Posted by TheCatWhisperer View Post
I'll take a shot at each one of these leaks!:

Firstly, the water pump. There is a hole underneath where the pump slots in that is supposed to permit water to drain out instead of contaminating the oil if the water pump's own seal leaks. However, it's possible that with heating cycles, very small amounts of crankcase oil could migrate the other way, past the seal and then drip out. Nothing major to worry about.

The water pump splits into two halves. Between them is a rubber o-ring. The two halves are pinched together by the three(?) bolts that clamp it to the side of the engine. If one of these isn't tight enough, or perhaps has threaded itself, then it's possible the two halves are not tight enough together to pinch the o-ring and fully seal it. But you would see water leaking and not oil. If it tightens up alright then you could always pull it apart and add silicon sealant.

Secondly the clutch slave sludge: The clutch salve is the same design and uses the same internal parts as the old Ducati 9x6/748 range. The piston seal can get contaminated really easily and pass microscopic debris past it into the fluid and graze the bore. This makes the clutch fluid blacken and causes leaks. Usually cleaning up the seal and bore occasionally help stem the leak. However, what I think the majority of the sludge you see is (and I've always got this on my 748, old F4 750 and new MY10 F4), is simply melting chain lube. It gets flicked off of the front sprocket and builds up inside the cover. It then gets heated up by the engine temperature and just runs down onto the side stand. Pulling off the sprocket cover (easy job) and cleaning out the gunk build up will help. If you use any kind of chain cleaning solution, this will inevitably also get flung off the front sprocket and dissolve the gunk build up, making it run.

Si
Right on!! thanks for the info!! in the winter time (june/july down here) I will take everything appart and replace the seals and orings
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post #9 of 20 (permalink) Old 03-31-2014, 07:20 AM Thread Starter
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Quote:
Originally Posted by theknurl View Post
Nico;
1st picture of the clutch slave might be chain lube(it is on mine) or a leaking slave smell the fluid you'll know if the slave is leaking

2nd picture of water pump the leak is probably from picture #3 or the drain bolt right below "can be seen"

4th picture don't think so

5th picture over flow hose dumps above there....reroute it and see if it stops......did you fill the header tank above MIN?

The leak in the first picture is deffinetly oil...
I do always fill the header tank above MIN, right to where the frame tube meets the tank (is´nt it suppossed to be filled up to that point?? or is it too much and I should just keep it at MIN??)
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post #10 of 20 (permalink) Old 03-31-2014, 07:20 AM
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Keep it at min.

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