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Old 04-05-2013, 04:50 AM   #1
50cc   50cc is offline
 
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Light oil leak in variator case after agressive riding

Hi all,

had a blown crank seal that was leaking inside the vario case, replaced it with a new original KTM seal and leaking stopped for a few days, but later I noticed some leaking again, but only after long WOT rides. Oil does not get on the variator or belt, just slowly leaks and drops from the back of the case (there's a kind of a small passage on the cover, below the clutch). Drips for 5 minutes after a rough ride (i have 4.5g rolpers now and rpm is quite high), then it stops. Oil level does not change, no oil on any moving parts, no oil puddles over night and so on.. So i'm asking is this dangerous or I just add some oil when needed and ride it like this?

Thanks in advajce guys.
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50cc 139QMB, 7g sliders, manual petcock w/ transparent lines, Naraku CDI, Naraku belt, high output racing coil, 18.4mm CVK clone w/ #85 mj and #38 idle, needle @ leanest, OEM pipe mod, Kenda tires, NGK Iridium, lots of LED mods, 2.61L/100km (90 MPG)



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Old 04-05-2013, 06:20 PM   #2
Firehawk989   Firehawk989 is offline
 
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Could it be the oil seal on your transmission input shaft? I had to replace one of those on my previous scooter cause it was leaking into the vario case under the clutch.
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Old 04-05-2013, 06:47 PM   #3
50cc   50cc is offline
 
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No, it's the new seal, I traced the leak :( Also, no oil around the trans seal.
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50cc 139QMB, 7g sliders, manual petcock w/ transparent lines, Naraku CDI, Naraku belt, high output racing coil, 18.4mm CVK clone w/ #85 mj and #38 idle, needle @ leanest, OEM pipe mod, Kenda tires, NGK Iridium, lots of LED mods, 2.61L/100km (90 MPG)



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Old 04-06-2013, 05:29 AM   #4
50cc   50cc is offline
 
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So what do you think? Should I worry?
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50cc 139QMB, 7g sliders, manual petcock w/ transparent lines, Naraku CDI, Naraku belt, high output racing coil, 18.4mm CVK clone w/ #85 mj and #38 idle, needle @ leanest, OEM pipe mod, Kenda tires, NGK Iridium, lots of LED mods, 2.61L/100km (90 MPG)
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Old 04-08-2013, 04:41 AM   #5
50cc   50cc is offline
 
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yeah, i guess it's not so bad, so i'll just keep on riding it like that..
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50cc 139QMB, 7g sliders, manual petcock w/ transparent lines, Naraku CDI, Naraku belt, high output racing coil, 18.4mm CVK clone w/ #85 mj and #38 idle, needle @ leanest, OEM pipe mod, Kenda tires, NGK Iridium, lots of LED mods, 2.61L/100km (90 MPG)



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Old 04-08-2013, 09:34 AM   #6
teddy554   teddy554 is offline
 
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Quote:
Originally Posted by 50cc View Post
yeah, i guess it's not so bad, so i'll just keep on riding it like that..
Where is the oil coming from, i would let it leak oil inside the cvt, i would fix that for it doesn't get the inside of the cvt oil nastyand run the chance of it getting on the belt and cause slippage
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Old 04-19-2013, 03:00 PM   #7
jmstar09   jmstar09 is offline
 
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Remove the variator and grab the crank with your hand and try to move it side to side. If the bearing is sloppy then there's your problem! If the bearing is failing, it'll eventually make a clunking sound most noticeable at idle and the leak will get worse.
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Last edited by jmstar09; 04-19-2013 at 03:53 PM.
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