macdaddy wrote:you need to try it. If you have a good evac pump it works VERY well. BUT not for the newer bikes w/ no "fill" plug. there is more than one way to skin a cat....
Again, is this a technique that you would use during a 600 mile break-in service?
I agree that there is often more than one way to do a job and I'm all for techniques that can help make a job quicker or more efficient...if there aren't any downsides
. We are going to have to agree to disagree on whether this subject has downsides, or not. I do know for 100% certain that the fellows in New Jersey would raise more than a few eyebrows if they discovered that a failed final drive was maintained this way...yes, they would probably still pay for it under warranty, but they would not be happy.
My background (all, thankfully, in the past): I have done a few dozen fluid changes on the "no drain" final drives (not that many, but enough to realize that it's a pretty easy procedure)...I've "overseen" (as Service Manager) well over 1000 fluid changes on them (probably a few thousand)...and, I've submitted quite a few warranty claims on the late model final drives (mostly bad seals...very few outright bearing failures). Oh, and I have a very good evac pump...I use it mostly for brake fluid. I had some really good and efficient techs and I had a few really lazy techs...not a single one of them sucked the fluid out the top.