G oog le BadWeB | Login/out | Topics | Search | Custodians | Register | Edit Profile


Buell Motorcycle Forum » Old School Buell » Archives OSB 001 » Archive through April 01, 2007 » Trans vent oil leak « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

Nukeblue
Posted on Saturday, March 17, 2007 - 11:13 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

after riding the other day, i found my rear wheel, caliper, swing arm, etc all covered in oil. i was beating on her pretty good, saw 120 mph a few times racing around with a fzr600. anyhow, the leak looks like it's from a vent hose going to the top of the trans/primary. i'm running 75-140 synthetic in the primary, which i've been using for a while with no problems. would going back to sport-trans fluid fix this? or is there other issues?
Top of pagePrevious messageNext messageBottom of page Link to this message

Akbuell
Posted on Saturday, March 17, 2007 - 11:42 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Check the fluid level in the primary. If it is higher than you remember, check the level in the oil tank. You may have a crank seal failing, allowing engine oil to seep into the primary, causing an overfill, and the resulting venting.
Top of pagePrevious messageNext messageBottom of page Link to this message

Zenfrogmaster
Posted on Saturday, March 17, 2007 - 02:04 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

What Akbuell said - that was exactly my experience, and it was the crank seal. It doesn't take much oil from the engine to overfill the primary and have it blow out the tube.
Top of pagePrevious messageNext messageBottom of page Link to this message

Ebutch
Posted on Saturday, March 17, 2007 - 02:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

+ new seal is much better.If you check primary oil you will find more oil than you put in it + discolored from engine oil and oil res( engine) down some.
Top of pagePrevious messageNext messageBottom of page Link to this message

Nukeblue
Posted on Sunday, March 18, 2007 - 10:33 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

cool, thanks guys. i'll check that asap.
Top of pagePrevious messageNext messageBottom of page Link to this message

Dano_12s
Posted on Sunday, March 18, 2007 - 03:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Nuke, I use sport fluid or Syn3 28 oz. is all I put in instead of the 32 oz. I think there was bulletin sent out on foaming at constant hi speed riding.
Top of pagePrevious messageNext messageBottom of page Link to this message

Reepicheep
Posted on Sunday, March 18, 2007 - 10:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

They sell a special tool to seat that crank seal. I did not use one, and had to do the job twice. Henrik did use one, and did the job right the first time.

(That being said, I got it right the second time once I knew not to set it that deep, and fashioned my own tool out of a cut up piece of hard wood dowel.. i.e. the infamous Green Tinker Toy piece... which Jack (my son) didn't appreciate when he spotted it in my tool box : ) )
Top of pagePrevious messageNext messageBottom of page Link to this message

Ceejay
Posted on Sunday, March 18, 2007 - 11:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I used a yellow one as my boy didn't seem to like those colors as much
Top of pagePrevious messageNext messageBottom of page Link to this message

Cyclonecharlie
Posted on Monday, March 19, 2007 - 07:42 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Before doing all that work, make sure it's not just a hose routing problem. If your vent line has a kink or a dip in the routing, it will build up pressure and blow out oil. A little looks like alot once on the rear tire.........Charlie
Top of pagePrevious messageNext messageBottom of page Link to this message

Bomber
Posted on Monday, March 19, 2007 - 11:32 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

also, make sure that water hasn't condensed or otherwise entered the primary/gearbox -- my MaDeuce did exactly what you describe -- enough fluid of any kind will have the poor dear puking all over --

my cleared up with a simple lube drain/refill (make sure NOT to pour in the entire 32 oz . . . . . . . )
Top of pagePrevious messageNext messageBottom of page Link to this message

Nukeblue
Posted on Tuesday, March 20, 2007 - 04:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

well, tonight i'll check it out.
i always have put a full quart in when changing the primary. but i can't remember flogging it that hard with the new 75-140.
i'm just hoping for the best...i hate it when my bike's down! hopefully it'll be obvious seein how my engine oil is red & the primary fluid is clear.
thanks

(Message edited by nuke-blue on March 20, 2007)
Top of pagePrevious messageNext messageBottom of page Link to this message

Hedcase
Posted on Wednesday, March 21, 2007 - 02:02 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

What color is leaking - red or clear; if you can tell?

Another possibility - is the leak from the top of the tranny, or from the end of the breather hose attached to the top of the tranny? If at the top of the tranny it could be your starter motor bolts have worked lose, and you're now leaking around the gasket. As an FYI: when I replaced the starter gasket after the first leak I used a metal/rubber gasket. Heat (or heat and gear oil in tranny) disfigured the rubber on that and it started leaking again. I've gone back to paper, and in both instances used locktite blue on the starter bolts.

(Message edited by Hedcase on March 21, 2007)
Top of pagePrevious messageNext messageBottom of page Link to this message

Dyerschaos
Posted on Wednesday, March 21, 2007 - 02:27 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

My bike was doing the same! oil on the tire, tail. swingarm, wheel. Found my vent tube routed up under the seat between the frame and the oil tank. I rerouted it under the battery down the outside of the swingarm. Problem solved! When it burps it misses everything including my TIRE. I was also thinking of tying it into the plumbing going to my catch can off of the forcewinder? Anybody have any comments on that scenario
Top of pagePrevious messageNext messageBottom of page Link to this message

Bad_karma
Posted on Wednesday, March 21, 2007 - 05:34 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Marc that is exactly what I want to do with my trans vent. Will be interested to read the remarks.
Joe
Top of pagePrevious messageNext messageBottom of page Link to this message

Nukeblue
Posted on Wednesday, March 21, 2007 - 08:31 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

bomber, looks like you may have hit the nail on the head. my fluid was clear up to the clutch cover & leaking out when i removed it. (with the bike straight up!)
the fluid looked like a butterscotch milkshake. i've seen this in engine oil & it always means water contamination. my question is could that much water get in there through condensation?? or could it be incompatibility of the two different fluids mixing? i'm thinking of changing the crank seal while i'm in there just to make sure.
oh yeah, the bonus was my chain adjuster shoe plate was cracked and i just bought the updated one to put in there!
Top of pagePrevious messageNext messageBottom of page Link to this message

Bomber
Posted on Wednesday, March 21, 2007 - 09:18 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Nuke -- condensation, excessively energetic washing (water down/up the vent hose -- you KNOW how I know), sins commited in a previous life --

if it was me (and it has been), I'd just do a really good fluid change (up to the level called out in the book, and no more), and see what happens --

classical troubleshooting tells us to do the easiest, cheapest things first, then move on to the more invasive and expensive options -- if the seal DOES need replacing, you'll be our 30 minutes and the cost of a quart of lube . . . . .

course, as alwyas, my advice is worth exactly what you've paid for it

;-}
Top of pagePrevious messageNext messageBottom of page Link to this message

Djkaplan
Posted on Wednesday, March 21, 2007 - 09:56 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Water can enter throught the clutch cable adjustment if the little rubber boot isn't sealing correctly, so I've been told.

Never had the problem, but it makes sense.
Top of pagePrevious messageNext messageBottom of page Link to this message

Nukeblue
Posted on Wednesday, March 21, 2007 - 10:26 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

well, i'm looking at 70 deg later in the week so i'm thinking i'll try the fluid change & see what happens. it just so happens i have a new clutch cable too.
so new chain shoe & clutch cable & 28 oz.
here we go...
thanks
Top of pagePrevious messageNext messageBottom of page Link to this message

Bomber
Posted on Wednesday, March 21, 2007 - 01:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks to Mr Kaplan for reminding me -- put a cable tie on the upper part of the black rubber accordian that covers the clutch cable adjuster -- this'll keep almost all the water from entering via the clutch cable
Top of pagePrevious messageNext messageBottom of page Link to this message

Dyerschaos
Posted on Monday, March 26, 2007 - 11:37 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

HELP! i need some feed back on if it's a good idea on connecting the trans vent to my catch can off of the forcewinder.
It is still burping and because of where i routed the tube previously i now need new rear brake pads! DUH! i are real smart........
Top of pagePrevious messageNext messageBottom of page Link to this message

Djkaplan
Posted on Monday, March 26, 2007 - 11:51 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The trans vent is only there to vent vapor and air pressure as the transmission and oil temperature goes up. If your trans vent is burping, your crank seal is probably leaking.

You really shouldn't have to hook the trans vent to a catch-can, but it would make sure you didn't get water in the vent.
Top of pagePrevious messageNext messageBottom of page Link to this message

Bomber
Posted on Monday, March 26, 2007 - 11:53 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

hooking the engine vents to the gearbox/primary . . . . . . .well, if you want the increase/decrease of pressure from teh crankcase affecting your primary lube, and exhaling the stuff (including moisture, btw) into the primary, go ahead on and do so

I'd recommend against it, though -- keep em separate
Top of pagePrevious messageNext messageBottom of page Link to this message

Dyerschaos
Posted on Monday, March 26, 2007 - 12:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

thank's,

any and all comments greatly appreciated

marc.........
Top of pagePrevious messageNext messageBottom of page Link to this message

Lake_bueller
Posted on Monday, March 26, 2007 - 05:43 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

condensation, excessively energetic washing (water down/up the vent hose -- you KNOW how I know)

Similar problems with my S1W. It was get water in there after washing or riding in the rain. My solution was to put a breather filter on the end of the tube. I haven't had a problem since: D
Top of pagePrevious messageNext messageBottom of page Link to this message

Cyclonecharlie
Posted on Monday, March 26, 2007 - 06:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

You want a steady climb in the vent hose all the way to the tail section(I put a little filter on mine) but that's just me. You don't want any dips in the line where moisture and oil vapor can build up and block the air flow(that way anything in the hose will drain back).
If you do alot of wheelie, you might want to route it to the front of the bike,but that's for extreme riding......Charlie
Top of pagePrevious messageNext messageBottom of page Link to this message

M2nc
Posted on Tuesday, March 27, 2007 - 12:10 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I have the vent tube routed back to the tail section and into a home made catch can. (Old brake fluid bottle and two tie straps). Its low tech but effective.
Top of pagePrevious messageNext messageBottom of page Link to this message

Nukeblue
Posted on Tuesday, March 27, 2007 - 01:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

well after 200 miles of hard riding, it appears to be fixed.
just need to plug the hose when i wash it i guess. then remember to remove it...
« Previous Next »

Add Your Message Here
Post:
Bold text Italics Underline Create a hyperlink Insert a clipart image

Username: Posting Information:
This is a private posting area. Only registered users and custodians may post messages here.
Password:
Options: Post as "Anonymous" (Valid reason required. Abusers will be exposed. If unsure, ask.)
Enable HTML code in message
Automatically activate URLs in message
Action:

Topics | Last Day | Tree View | Search | User List | Help/Instructions | Rules | Program Credits Administration