I’ve had an opportunity to climb around the new (2008) Winnebago View now and everything appears to be in great shape.
I removed enough “stuff” the other day to inspect the fuel filter. It was a great practice run because I really couldn’t determine if it has ever been replaced. Mercedes says pitch it every 10,000 miles and since bad diesel fuel can cause a world of expensive problems, why not? I ordered one!
While waiting for it to be delivered, I searched the Internet and read volumes of information regarding changing it. I also read lots of scary stories regarding a little plastic clip that is very easy to break. It is on a tube that connects to a WIF (water in fuel) sensor in the top of the filter and which allows one to drain water from the filter.
Water! The nemesis of diesel fuel injectors. It’s amazing how violently steam can explode in the tip of a fuel injector. Which by the way, will leave a much larger hole than designed and cause too much fuel to be injected into said cylinder and generally smoke (not to mention cause lots of other problems).
I delicately placed a thumb nail under each prong of this plastic clip and tried my best to remove the fitting. Of course, it broke. Believe me, I was extremely careful and gentle. I read where some guy put his back together with one side of the clip broken (just like mine is now) and before long it was spraying fuel all over the engine.
This fitting is permanently attached to a hose that will withstand a fair amount heat and which snakes about and ends up connected to a small valve placed in a convenient place from which you can drain water. I looked it over and couldn’t begin to figure how to dismantle all the stuff that hose goes through before it reaches its terminus.
Crap!
Back to the internet I went. The more I read, the more I realized that odds are great that anyone removing this fitting is going to break the clip. I learned that that “other” end of the hose has a small valve that unscrews to allow the water to drain. What a coincidence!!! This little valve will screw into the top of the fuel filter (where the fitting with the broken clip lives), thereby eliminating any chance of a leak. Ha! I even read where some sprinter mechanics are saying that Mercedes has had such a big problem with these clips that they are recommending making this change if a clip breaks. How about that. Rob Peter to pay Paul.
So, I immediately took enough stuff apart to get to the top of the filter. Then I reached over to the drain and unscrewed the little valve. Then. . . . And then. . . . A A AND THEN , I began to laugh.
You see, the filter I bought was manufactured by Mann, a well known name in quality filters. When I opened the box, in addition to the filter and two O rings for the sensor tube, was this exact valve. The valve which is located at the other end of the hose that connects to the sensor on the filter. The valve which really has nothing to do with changing the fuel filter. My god! They are psychic! They knew I was going to brake the clip.
Obviously this darn clip is so delicate and breaks so often and is so difficult to replace that Mann just tosses a valve identical to the one that certain Mercedes dealers are recommending you move to the filter once you break the clip, into the box. I think they know you’re going to be needing it.
So, I can update my service records indicating it has a new fuel filter.
Done!