| Author | Message | ||
     B1rdman |
I had a blast today cruising with a bunch of liter bikes (GSXRs/R1/Repsol)in some fast twisties..kept up with them all just fine. However when we got done, I noticed that the bike was dripping oil bad and had completely coated the right side of the bike, shock, part of the wheel, my pants, etc in oil. WTH? It definitely wasn't overfull of oil. Could it be the extreme leaning from side to side? Or could it have been the earlier high rpm shifts and rev-limiter bounces (clutch slipping)? I checked the oil reservoir and it seemed fine..where's it coming from? | ||
| B1rdman |
I read somewhere else: "If the motor sprocket seal goes bad, the ENGINE oil--which is under pressure---enters the transmission--which is not pressure fed by an oil pump--- resulting in it getting overfull and puking out the trans vent line." Does it sound like my motor sprocket seal went bad? | ||
| Alfau |
It does sound like it. Check the oil level in the primary for conformation. PIA to drain it is. I used a suction pump to bring it back to the correct level. It's a combination of the old oil seal pluss excess rpm. Could also be over filled primary which will do it also. Stay below the red line. American Sport Bike for the updated seal. | ||
| B1rdman |
Would any of that cause the clutch to slip at high rpms/shifts? | ||
| Natexlh1000 |
The engine oil and tranny oil are pretty close so the clutch and shifting would unaffected. My X1 seal went at 40,000 miles. The tranny vent is located in the tail up high. When mine went puking, it coated the rear of the bike not as far front as the shock. I was climbing Mount Washington at the time. Getting down with no rear brake was interesting | ||
| B1rdman |
Half of the shock at least was coated and dripping. It seemed like the leak was coming from right above the halfway mark on the shock on the right side.. It's a 2000 X1 btw | ||
| Ratbuell |
If your primary is overfilled, yes, you can get clutch slip. If your engine seal is bad and it is bleeding engine oil into the primary...causing it to overfill...yes, this could be your problem. Pull your derby cover, check your primary level and check your engine oil level. | ||
| B1rdman |
Could I get a part number for the sprocket seal/crankshaft seal? Thanks everyone for your input! | ||
| Firemanjim |
Look at oillines from pump, can come lose and leak in that area. If oil level was good it is not loosing it into trans. | ||
| Reepicheep |
I had something like that happen on my M2 when an oil filter spun partially off. Also, rocker box leaks can get everywhere and be hard to track down. | ||
| B1rdman |
Could it be that I have a small motor sprocket oil seal leak that only leaks under high pressure (high rpm)? | ||
| Two_seasons |
Check the oil lines as Firemanjim says. Do you see any drips of oil, any oil that has blown backward across the bottom of the engine? Check the bottom of the engine right above the muffler, from front to back and note any oil that appears to be pooling toward the rear of the engine. Next, check the oil level (do not start the engine) in the oil tank under the seat. Your oil should show at less than 1 inch above the bottom of the dip stick. That is the full mark on these bikes, just above the bottom of the dipstick. Then, clean the bike engine area with a good degreaser. Blow it all off with a leaf blower to completely dry everything off. After dry, dust it down (this is gonna get messy) with a good dry white powder (baby powder works). Allow to sit for a while. If you cannot see any leaks from anywhere, then start the bike and allow it to idle. Check for leaks while it is idleing. With the powder on the engine, it will be evident if there is any leaks coming from the engine, top to bottom. Check carefully with a bright light, even in direct sunlight! If you don't discover any leaks from any part of the engine area, then you either have an overfilled primary, more than likely, and as evidence of that, will see much oil as it has exited out of the primary breather hose, which terminates under the seat/tail section. Easy to see when you get there! At speed and overfilled, primary oil will puke out. Make sure when you change the primary oil (I use HD Formula+ in all my bikes) that you only use 28 ounces, no more, no less! Any more and you'll puke it out, any less and you'll rob the primary of vital lubrication. Good luck. | ||
| Psykick_machanik |
I would think your "small motor sprocket oil seal leak" would be the best place to start and wouldnt hurt to fix anyway. Is any oil dripping out of your intake box? Was pondering if the high rev's would over pressure your case and puke oil out the vents. the vent bolts in the intake box just poped into my head. Thinking out loud here. Glad you had a fun ride. | ||
| Firemanjim |
Engine sprocket leak will send oil into trans so if trans is not overfilled --easy to check for--- then it is not culprit. And a leaky shock can puke oil all over bottom of bike. | ||
| Oldog |
It seemed like the leak was coming from right above the halfway mark on the shock on the right side.. Look at and around the oil pump its under the right side of the motor, you have 3 oil hose connections, and the connection to the motor case, It also might not be a bad idea to check the oil pump gear ( different issue but serious ) I don't know how close to stock your bike is but lines and pump area are worth checking As FMJ points out the shock seals on standard shocks are failure prone and make a mess, the reservoir is in that area too. (Message edited by oldog on May 13, 2013) | ||
| B1rdman |
The oil in the reservoir didn't even read on the dipstick, but I could see it in the tank. It was close I think. I do get oil that drips or sputters out of the intake box on occasion..it's definitely moist up there with oil residue. Didn't think about the shock.. I'll wipe everything down. How can I tell if the shock has puked out all of it's oil? Do you have a pic of the oil pump that I can use as reference? It's behind one of those plastic covers isn't it? My bike is stock as far as I know. | ||
| B1rdman |
Transmission was not overfilled when I took the cover off. The engine reservoir was down some though. The main area of oil residue concentration appeared around the drive sprocket, maybe more underneath and forward of it. Could it just be the hose that I saw directly underneath the bike that vents, spewing everything? Just seems weird that if it were all coming from that hose, that it would have reached so far forward and to the right side of the bike. Pics: Shock is wet from halfway to back:  Most of the wetness:  Where light is shining:  Also some wetness in the valley right behind the rear cylinder:  | ||
| Kevmean |
Looking at that photo of the front pulley it looks like the seal is missing from the shaft in the centre exposing the needle roller bearing to all the road grime , it also looks like the needle roller outer race has moved out of position (possibly that which has pushed the seal out ) At the very least i'd guess that you need the transmission pulling from the bike and a new needle roller and seal fitting if it hasn't damaged the shafts as well. | ||
| B1rdman |
There's no way to fix those things with the transmission still in the bike? Could you elaborate on the needle roller outer race moving out of position? I did notice that it seemed to be moved outward some..I can take pics tomorrow. | ||
| Reepicheep |
Pulling the tranny on a tuber is not actually that big a deal. Getting that 5th gear drive assembly out will be worse than pulling the tranny actually. At least it was when I did it. I built a tool to extract the assembly, and it worked, but it was a bit tense. Once the assembly is out, you can get it to a proper bearing press and press out the needle bearing cages (then press new ones in). Then use the same home made tool backwards to put the 5th gear drive assembly back in. | ||
| Alfau |
It happens. http://www.badweatherbikers.com/buell/messages/476 23/653636.html Notice:- "Belt too tight can pop the seal." | ||
| B1rdman |
So this is the source of all my oil spewage? Would this also cause my high rpm clutch slippage? | ||
| Two_seasons |
I would say that your drive belt being too tight may have caused the bearings to fail. Could be the rear shock starting to go at the same time. Like I said, the only way to know EXACTLY where the leak is, is to follow what I previously wrote! | ||
| Thylacine |
My $.02 loose starter. Clutch maladjusted. Carry on | ||
| Oldog |
To answer the wheres the oil pump question Right side (as seated on bike) under the cam gear case the hose that runs to the filter mount is attached to it. It also appears as stated above the seal on the end of the output shaft is missing AFAIK its just presses in to the shaft end. that bearing though has been exposed to the elements and a lot of dirt so further work may be worth while | ||
| B1rdman |
Everything was connected fine and not leaking around the oil pump itself. It did appear that the leak came from around the primary drive gear.. The bearing did look more exposed than it should (I know now, not at all). What causes it to get pushed out like it is? | ||
| Arizona_buell |
I had a similar situation happen to me , however it was the rear upper pushrod seal leaking and dripping down on all below as well as the same rear half of the shock. I pulled the drive sprocket to check the seal and it was fine, I replaced it anyway but sometimes oil leaks are not exactly where they seem to be.. Just so you don't go nuts looking at one thing and overlooking another. :-) Good luck with whatever you find.. | ||
| Kalali |
Is the end of the output shaft supposed to be flush with the edge of the bearing? I'm pretty sure I'm missing the seal as well since I do recall seeing the shaft/bearing the last time I checked that big nut. In fact, I think my shaft was a bit recessed as well.... Is it possible to "push" the bearing back in by just removing the sprocket? Could it be that the sprocket is not fully seated on the shaft thus making the shaft look recessed? last question: Does anyone know the part number for that seal? (Message edited by kalali on May 14, 2013) (Message edited by kalali on May 14, 2013) | ||
| B1rdman |
After topping off all the fluids, here's the results after a 30 min trip:  Looks to not be coming from the shock:  There IS wetness on the far side though..  Backside of the drive belt cover. Does also suggest that oil was running down it, not necessarily originating from it..:  Primary drive bearing very wet with a little pool of oil sitting on the bottom:    The backside was wet as well, all along the center of the swingarm and under the subframe. There were spray marks on the right side of the battery though, so still suggests that it came from the primary drive bearing area.. | ||
| Serialk |
Stop riding!!! Your mainshaft bearing is walking off the shaft. from the pictures it is almost off.. pull your tranny and mainshaft. replace the bearing and main seal. problem solved. I had the same thing happen to me. replace with NEW bearing New seal! |
