oil coming from the shifter shaft hole? - Honda RC51 Forum : RC51 Motorcycle Forums
 
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post #1 of 6 (permalink) Old 04-19-2012, 10:05 AM Thread Starter
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oil coming from the shifter shaft hole?

hey guys, took my airbox off my Sp2, and was cleaning up/checking the wiring.
found a rats nest that was partially built... not the issue. after everything was put back together, i went down the road, and oil was profusely spewing from the shifter hole that goes into the case. there is an oil seal there.. but it appears to be pushed out slightly. the retaining clip is there to hold it.

did i miss something on the airbox? too much positive crankcase pressure?

need ideas
thanks
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post #2 of 6 (permalink) Old 04-20-2012, 12:30 AM
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If you had it sitting long enough for a nest to be started, the seal in motor for shifter may have hardened and it's round shape has become oval or just unable to seal, from contaminated oil (acidic), any longer. Would suggest a further examination of other possible infestation damage that may have compromised the engine crankcase venting system, if the seal itself is found to be okay.
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post #3 of 6 (permalink) Old 04-20-2012, 07:17 AM
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1) no leak before deep cleaning? If yes move to # 2, if no replace seal.
2) go back and re-check that the crankcase vent lines haven't been kinked/pinched/occluded. Fixed or no problems noted go to #3.
3) with dentist pick or fine screwdriver an good lighting, inspect seal and attempt to reseat. Check for leaks. If it leaks, replace seal. If it stopped leaking go to #4
4) go to indyoem or other OEM parts house of your choosing an buy a new seal. Might as well replace it now.....

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post #4 of 6 (permalink) Old 04-20-2012, 09:21 AM Thread Starter
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Yep. I've been riding it for about 2 months and no problems. Changed oil lat week. Decided to get nosey and pull everything off. And check. The nest was from the p/o. My bike doesn't and WILL NEVER sit that long!
Anyways. I figured since everything was fine before that I must've missed something in the air box/kinked a hose.

I'm on my way out now to have a look.
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post #5 of 6 (permalink) Old 04-20-2012, 09:22 AM
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if the seal is pushed out, you have pressure built up, i would check the crankcase breather hoses for kinks or maybe a rat turd clogging it
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post #6 of 6 (permalink) Old 04-20-2012, 09:56 AM Thread Starter
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Thanks guys. Just figured it out. I think. On the brake lever side of the bike. The hose that goes to the bottom of the air box.. It was Un done. I'm guessing this is it ?
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