EVO All Evo Model Discussion

Primary Seepage/leak!

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Old Aug 16, 2012 | 11:41 PM
  #1  
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Default Primary Seepage/leak!

Hey guys... the outer primary gasket seeps or leaks a bit but mainly after longer rides and higher rpms, in town riding doesnt seem to make any difference. ive got an 85 fxwg 1340 evo with a 4 speed. it even seeps outta the top side of the primary and a little bit from the bolts! I'm always wipin down the residue. But ive been keepin a close eye on the fluid level and as far as i can tell it has not lowered whatsoever! I did put a new clutch in this past february but was told by the local shop that the gasket(which is not stock) was "re-useable"!! I'm thinkin i just need to replace the gasket since no fluid level was lost, but any advice from ppl with similar issues would b appreciated! Thanks ya'll!
 
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Old Aug 17, 2012 | 12:08 AM
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I think you answered your own question
 
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Old Aug 17, 2012 | 02:34 AM
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Originally Posted by vincentostapowich
I think you answered your own question
Yes Sir!
 
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Old Aug 17, 2012 | 03:15 AM
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Also run a tap down the threads where the allen bolts go in to make sure they are not bottoming out on crud in the holes.
 
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Old Aug 17, 2012 | 09:52 AM
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Whenever you take apart your bike use new gasket and seals.
It's just good insurance.
 
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Old Aug 20, 2012 | 03:38 AM
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Thanks for the input guys, i know i did kinda of answer my own question but tend to second guess myself sometimes.... anyway got the new gasket, should the solve the problem!
 
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Old Aug 20, 2012 | 07:45 PM
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Just a note and possible tip to you guys with primary leaks. I had one......seemed to be coming from the bottom screw area on the primary cover. After changing the &#%@ gasket twice, and re-torquing the screws to perfect manual specs, changing oil twice (thought it might be leaking because of synthetic oil), hunting for leaks in engine, etc. etc. etc., I finally opened the primary several weekends ago. I removed the chain tension bracket and checked the attachment bolts from inner primary to engine. I noticed that the lock down tabs on the washers weren't locked down tightly. I opened the tabs with needle nose pliers and lo and behold.......the nuts weren't torqued properly. I tightened the nuts to proper torque and locked down the washer tabs properly, re-installed the chain tensioner, and closed it back up. Filled with 20w50 and rode for 10 miles or so. NO LEAKS!!!!!! I have been watching the bike for that damn quarter- size oil leak in the same place for a while now....3 weeks, and have ridden for several 150 mile trips and still no leaks.
Maybe fixing your leak will be as satisfying and easy.
Sam
 
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Old Aug 22, 2012 | 11:46 AM
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Sam, I think I have the same issue you mentioned, or the tech that worked on my bike didn't get the solenoid boot back in place correctly. It's only a drip at the end of a good long ride, and the primary doesn't loose a lot in a few thousand miles. I've been waiting for a "better reason" to open it because it never fails you fix a leak another one, often worse, can magically appear.

BTW it started with the seal between the input / output shaft on the tranny which looked like the inner primary was leaking. Then they damaged the main seal on the inner primary by cutting it on the bearing's race and had to open it up again. They reused my expensive gasket the first time then used a fresh gasket the second time, but reused the cheaper gasket a second time due to damaging the seal. I';ve got a good gasket waiting to be installed but I'm riding too much right now to want to tear into it ... maybe soon as the weather cools I'll dig into again ... UGH!
 
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