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So, I installed the new drain plug, torqued it at 29.5 Nm. I removed the level and filler plugs. The filler port diameter allows seeing the ring gear. I felt with the finger while spinning the wheel. No burr, no indentation. The teeth were still greasy. I spun the wheel and listened for noises. I filled in with Motul specific for transmission (Pont), and spun the wheel again, listening for a difference. I could not detect any. I re-installed the level and filler plugs, torqued at 24.5 Nm; Tomorrow, I will ride about 5 miles, and drain the oil. I will check the plug for metal burrs, and I will send the oil to the Blackstone lab for analysis. If I was looking for damage on the ring gear, how could I identify it?

I have a 2002 V11 LeMans with around 25K miles. I changed the oil and filter (non-synthetic 20/50) at the end of last season. I’ve ridden it a few times this season and a brand new issue has appeared. The oil light comes on, but only at idle. It flickers around 1500-2000 RPM and comes on solid below 1500 RPM. One correction - it did this just once last season and the problem never reappeared until now. Please tell me I don’t need an oil pump! Thanks for any tips and insight. Scott

I did not know I had no oil. I thought this was an overflow. Because the road between Atlanta and Gladewater was empty, I rode fast. The first Quota I looked at, in Boise, did not have a filler plug. Instead, it had a breather plug, with a hose to for overflow. This is what made me think that it happened to me. I should have checked for the drain plug, but I looked for a rag to clean up the oil. After I removed the oil, I observed no more leakage. If I had found out the plug was missing, I don't know what I would have done. Most likely work out a temporary plug, duct tape comes to mind, and bought some oil from the local auto-shop.

You won't find a slick. It will just spit the tiny amount of gear oil the bevel box carries onto the rear wheel/tyre and fling it everywhere in a spray. It won't be like losing a sump plug and dumping 4 or 5 litres of oil on the road. Phil

If you want to get your German visitors up and running, try this. They love it.

Ok, my bad. I revisited your first post. I read too fast through it the first time. I now understand the order of events. I can't believe you elected to ride over 200 miles home and risk a rear wheel lock up when knowing you had no oil. I thought you find that out when you arrived home. This is where AAA comes to the rescue. Also, I never expected you to find the oil plug, just maybe the slick.

I used a GoPro on ball that mounts in the hole freed up when I switched to bar-end mirrors. I just got the quad-lock system for phone and like it. Have not been recording any videos lately. But here is one I did a few years ago when I had a Greenie...

well hold now.... its takes all kinds, and if we were all the same it would be rather boring. and look what entertainmnet came from it all in this thread. and pretty funny, moto guzzi owners calling someone else diseased. thats a gem!

I emailed Mike Haven; no reply. This morning, I picked up the oil drain plug from them in Hempstead. I was surprised to get an invoice. Since there was one other customer, and I was on a clock, I did not say anything. I took the invoice. Thereafter, I sent a scan of the MPH invoice that clearly detailed they changed that oil. We shall see what happens.

Make absolutely sure the pump is not metal to metal ( pump to frame) causing the noise.

Did you explain to MPH the reason for the "need" for the drain plug ?

I think it is unanimous ,the owner had a brain tumor , drug issues or schizophrenic .

This is likely the parts that have worn out: you need to replace them as a set too. Besides, I do not have a vice nor a bench. Removing the drive pinion is going to be challenging, if I needed to.

Apologies @Steve Swan if you purchased the pump from MG Cycle then I'd ASS-ume it was Ok as they are pretty good and know Guzzis backwards. If the bike runs well, then it's probabaly fine. I'm too anal when it comes to that sort of thing. As I'm sure you're aware if a pump drastically didn't match the OEM ratings it could stress other components in this case the pressure control/relief valve, or even overwhelm it, in which case fuel pressure would rise, with all sorts of problems

There is no way I am going to find that plug. The only clue I can offer, is that in Gladewater, when I noticed the leak, I cleaned the transmission, the rim, the tire. I waited a moment, and there were any further leakage. Which reinforced my thinking that it was maybe overpressure oil that leaked, and it stopped. It only stopped because there were no more oil! if you think about it, the rear drive contains 0.230 liter of oil... next to nothing.

I completely agree. You are transforming an axial force from the driving pinion to rotate the ring gear. It is clear that without any lubricant, you are wearing down the teeth. More than the bearings, this is likely the weak point in the movement transmission.

Probably; but then you now have to add the unreliable shipping because they have removed the "de minimis" that exempted packages to go through customs below 800 USD. I would have gotten that plug one month from ordering it. But there is solace; MPH has the plug, so I am going to go get it today.

@guzzigary Thinking about it after the fact, in one of my previous posts, I think the drain plug dropped shortly before I stopped in Gladewater. I probably not have rode much with the oil wet tire. I cleaned it while in Gladewater, and I checked there wasn't any fresh oil after that. I regret to not have checked the oil drain plug was in place at that time. It simply never occurred to me that I could have lost it. This is a first. The only incident I had was at a dealership oil change for a car, they had not tightened the new oil filter, and I noticed the oil patch in my garage and rectified the situation.

I am (what a surprise ) behind in being ready to launch for the Mutton Run and MotOzarks next week. Needed to do the 18K service on my V85, but “Some People” — code for my sweet but focused spousal supervisor — had other priorities. As an example of her erroneous thinking, she believes it is more important to have the house look great for my German family visiting in mid-June. Lordy, wimmen. THIS is important … So, it seemed to me, given the small allowance of minutes I was granted, critical to find something motivational to keep me on mission. Did a quick search and thought this seemed right ... https://www.youtube.com/watch?v=QjkaWADdU9w Maybe young folks working on an overnighter these days find this helpful, but it almost put me to sleep. It sure did not keep me moving. Back to the digital drawing board. Now, THIS is more like it. https://www.youtube.com/watch?v=njw-g09XPmM Went from this … (yes, a clean work area is key) ... … to this in record time (for me, at least) … If my Perfect Pillion & Polish Princess will grant me a few more minutes today, I can get that back on, and, after R&R'ing the fluids in the gearbox and final-drive, declare my Guardia ready for combat operations. The visiting Germans? I get back from mutton and catfish two weeks before they descend here. Lots of time. Besides, the night before, I’ll play this … https://www.youtube.com/watch?v=8zEy4GNMJq0 Bill =========== Edited to apologize as I wasn't smart enough to get the y/t links to appear. Have done that before, but, sigh, aging and forgot. [edit: docc inserted the linked displays. Easy: copy and paste the YouTube URL directly into your post without using the linking tool "[--]".

@gstallons Thank you for your suggestion. I'll keep an eye open!

I did not match flow and pressure, since MG Cycle sells the Osias, i ass-u-me 'd the thing pushes gas at some rate comparable to the factory pump... Such thinking might not be terribly logical and unecessarily unwise, but burning up what remaining time i have left orbiting the sun, less now than before i decided to write this entertaining drivel, and unlike the folly of my youth, i don't let stuff like that take up any more space in my brain than i decide i want to give it. The LeMans starts quick, idles evenly and accelerates strong through the all gears from idle to 115, so the pump must give the LeMans what it needs. I just don't like the whine. But, hell, what Guzzi doesn't have a distant cousin who isn't a tractor... And when i want to ride something more like a horse drawn plow, i hop on my '27 Harley i built from parts (: Where can i source a Bosch fuel pump? Or, what's the part number? Thanks for suggesting the Bosch.

@p6x Dont know if it has been mentioned, but that plug might have fallen out two miles from home. I have a hard time believing you could stay upright on a greased tire for 200 miles, let alone have that rear drive keep spinning for that distance. Rear drive fluid has a distinctive odor...I think you could have caught a whiff of it sometime soon after the leak occurred. Maybe backtrack in the car for a short distance to get a visual of where the dump occurred? Might be a possibility, or maybe it's too late now. I hope another biker didn't go through your oil slick. Glad you made it home.

Your speedo works? Lucky

And a sissy bar, at least 3 feet long.

I don't know why anyone would put that much effort in and not go all the way with it. It needs much longer forks, spoke wheels with no unsightly brake rotors, and elongated shark-fin-tipped dual exhaust (preferably straight pipes without any baffles). I would also hose-clamp a couple highway pegs onto the headers.