acroadam Posted June 3, 2011 Report Share Posted June 3, 2011 (edited) I was doing a leak down test, and in the process, tranny oil starting gushing out this hole on top of my engine, right were the back shock bolts onto the frame. I have pics below to what hole I'm talking about. I loose about 3-4 psi within 6mins. Do I have an internal leak? If so, where is it likely to leak air inside? I heard a keyway could leak, what else? http://s1179.photobucket.com/albums/x392/s_portrey/Adam/ Edited June 3, 2011 by acroadam Quote Link to comment Share on other sites More sharing options...
Zwiser Posted June 3, 2011 Report Share Posted June 3, 2011 its your right (clutch side) crank seal,. there not that hard to replace as long as you have some sorta clue on what your doing. just take the clutch out, pressure plate, steels and friction plates, inner hub, basket, then take the crank gear off and youll see the seal, just pry it out with a screw driver without damaging the cases, or you can drill a drywall screw in to it on each side and tighten them slowly with a screw driver and itll back out. this should take 1-2hr make sure you use oem seals always. Quote Link to comment Share on other sites More sharing options...
Starwriter Posted June 4, 2011 Report Share Posted June 4, 2011 That would be a good trick, except the seal has a rib that goes in a groove in the cases. Time to split the cases. Quote Link to comment Share on other sites More sharing options...
Zwiser Posted June 4, 2011 Report Share Posted June 4, 2011 you dont have to split the cases. Quote Link to comment Share on other sites More sharing options...
crustydemon Posted June 4, 2011 Report Share Posted June 4, 2011 It can be done without splitting the cases to get you by temporarily if you had to but I wouldnt recommend it. Just do it right. Quote Link to comment Share on other sites More sharing options...
bansheesandrider Posted June 4, 2011 Report Share Posted June 4, 2011 you dont have to split the cases. BULLSHIT!!!!!!!!! to do it correctly you have to split the cases because there is a rib on the outside of the seal that fits in a groove in the cases. You can pull the seal out with screws and clean out the rubber from the groove, but there are only 2 ways to get the seal back in- split the cases and do it right, or grind the rib off the new seal and coat it with Yamabond and drive it in. The second method should only be used in an emergency to get through a riding trip. Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted June 4, 2011 Report Share Posted June 4, 2011 BULLSHIT!!!!!!!!! to do it correctly you have to split the cases because there is a rib on the outside of the seal that fits in a groove in the cases. You can pull the seal out with screws and clean out the rubber from the groove, but there are only 2 ways to get the seal back in- split the cases and do it right, or grind the rib off the new seal and coat it with Yamabond and drive it in. The second method should only be used in an emergency to get through a riding trip. Yep x2 Quote Link to comment Share on other sites More sharing options...
acroadam Posted June 4, 2011 Author Report Share Posted June 4, 2011 (edited) Alright. Guys thanks. One question, can I just yamabond the seal, without buying a new seal? And what will eventually happen if I dont fix it correctly? Thanks Edited June 4, 2011 by acroadam Quote Link to comment Share on other sites More sharing options...
Starwriter Posted June 4, 2011 Report Share Posted June 4, 2011 Alright. Guys thanks. One question, can I just yamabond the seal, without buying a new seal? And what will eventually happen if I dont fix it correctly? Thanks Quote Link to comment Share on other sites More sharing options...
acroadam Posted June 4, 2011 Author Report Share Posted June 4, 2011 Hmmmm...I see. How hard is it to split the cases? Quote Link to comment Share on other sites More sharing options...
Larry's Shee Posted June 4, 2011 Report Share Posted June 4, 2011 Probably about 20 nuts, bolts , screws, rubber or dead blow hammer, Clymers manual, yamma bond/ three bond, gaskets, seals. About $20 for crank, $30+ complete set. Clean outside good before you take anything apart. Quote Link to comment Share on other sites More sharing options...
acroadam Posted June 4, 2011 Author Report Share Posted June 4, 2011 Probably about 20 nuts, bolts , screws, rubber or dead blow hammer, Clymers manual, yamma bond/ three bond, gaskets, seals. About $20 for crank, $30+ complete set. Clean outside good before you take anything apart. I have everything except yamabond and seals. Is there a chance it could be a keyway leaking? Quote Link to comment Share on other sites More sharing options...
dave5.0 Posted June 5, 2011 Report Share Posted June 5, 2011 Keyway on the clutch side? Possible. Usually seal the nut, washer, and keyway when you put those together. If that's all you had leaking, it be a pretty easy fix. Probably a crank seal, but could be the sealer between the cases leaking too. That's not as likely as a crank seal though. Quote Link to comment Share on other sites More sharing options...
acroadam Posted June 7, 2011 Author Report Share Posted June 7, 2011 Keyway on the clutch side? Possible. Usually seal the nut, washer, and keyway when you put those together. If that's all you had leaking, it be a pretty easy fix. Probably a crank seal, but could be the sealer between the cases leaking too. That's not as likely as a crank seal though. Alright..I'm gonna take off my cover, and spray soapy water ,and see what I can find Quote Link to comment Share on other sites More sharing options...
J-Madd Posted June 7, 2011 Report Share Posted June 7, 2011 Alright..I'm gonna take off my cover, and spray soapy water ,and see what I can find I'm all for shortcuts, but no way in hell would I put a new seal in there without the cases apart. Yamabond won't fix the seal. It may be leaking around the inside of the seal, which is exposed to the moving crankshaft. Also, leaking around the key-way usually won't leak bad enough to do what you describe. Quote Link to comment Share on other sites More sharing options...
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